Cummins N14 Celect Plus Derate Help

The plugs may test at 12.5 volts, but what's important is how much of that voltage gets back to the computer. That's what it is looking for and the sensor is responsible for. I'd try to see if I could get an ECM that's set up as close as possible to the current unit.

 

If the plugs test at 12 volts theres a problem, ECM is supplied with 12volt but breaks it dowm to 5 volt, on a 3 wire sensor you typically will have you 5 volt reference, a grd, and a signal wire the signal wire measures in .1 volt increments to tell ecm the values at the sensor. I only use a DVOM when checking ecm voltage. Yes you can ohm sensors to see if they are bad, since you replaced them already I'm with the boss bad wire in harness. Cummins celect and celect plus are pretty notorious for wire insulation to look good but wire inside be broken a pin test will tell you

 

Here is the trouble shooting steps for flash code 433

Circuit Description

The intake manifold pressure sensor monitors intake manifold pressure and passes information to the electronic control module (ECM) through the sensor harness. If intake manifold pressure becomes too high, it will cause a derate condition.
Component Location

The intake manifold pressure sensor is located on the air intake manifold. Refer to Procedure 100-002 (Engine Diagrams) in Section E for component location.
Shop Talk

• The ECM checks for this fault only at idle speed. If the intake manifold pressure shows too high of a value at this time, the ECM will log a fault code.
• Using the intake manifold pressure sensor breakout cable, Part Number 3824775, between the intake manifold pressure sensor and the engine harness sensor connector, with keyswitch ON. Check with intake manifold pressure sensor connected and disconnected.
• Run an Automated Cylinder Performance test and/or Single Cylinder Cutout test to detect an injector problem causing the fault. Look for alternate fuel sources, such as oil-filled charge air coolers or blown seals in the turbo causing this fault.

[SIZE=+0]Cautions and Warnings[/SIZE]

[TABLE="align: center"]
[TR]
[TD] [SIZE=+2]CAUTION[/SIZE]

To avoid pin and harness damage, use the following test leads when taking a measurement:
Part Number 3822758 - male Deutsch/™AMP®/Metri-Pack™ test lead
Part Number 3824775 - breakout cable
Part Number 3824776 - breakout cable.

[/TD]
[/TR]
[/TABLE]

[TABLE="align: center"]
[TR]
[TD] [SIZE=+2]CAUTION[/SIZE]

To avoid damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM.

[/TD]
[/TR]
[/TABLE]

Troubleshooting Steps

[TABLE]
[TR]
[TH="bgcolor: #cccccc, colspan: 2, align: left"]STEPS
[/TH]
[TH="bgcolor: #cccccc, align: left"]SPECIFICATIONS
[/TH]
[/TR]
[TR]
[TD]STEP 1.
[/TD]
[TD="width: 40%"]Check the intake manifold pressure sensor.
[/TD]
[TD="width: 60%"][/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 1A. Inspect the sensor circuit for tampering.
[/TD]
[TD]No tampering
[/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 1B. Inspect the harness and the sensor connector pins.
[/TD]
[TD]No damaged pins
[/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 1C. Read the fault codes.
[/TD]
[TD]Fault Code 433 is active
[/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 1D. Check the intake manifold pressure sensor supply voltage.
[/TD]
[TD]4.75 to 5.25-VDC
[/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 1D-1. Measure the voltage to the sensor.
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 1D-2. Measure the voltage from the ECM.
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 1E. Check the intake manifold pressure signal.
[/TD]
[TD]0.42 to 0.58-VDC
[/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 1E-1. Check for a short circuit from pin to pin.
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 1E-2. Check for continuity in sensor harness.
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 1E-3. Check for alternate fuel sources.
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 1E-4. Check for injectors out of specification.
[/TD]
[TD][/TD]
[/TR]
[TR]
[TD="width: 15%"]STEP 2.
[/TD]
[TD="width: 40%"]Check the sensor harness.
[/TD]
[TD="width: 60%"][/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 2A. Inspect the harness and the ECM connector pins.
[/TD]
[TD]No damaged pins
[/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 2B. Read the fault codes.
[/TD]
[TD]Fault Code 433 is active
[/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 2C. Check for a short circuit from pin to pin.
[/TD]
[TD]More than 100k ohms
[/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 2D. Check for a short circuit to ground.
[/TD]
[TD]More than 100k ohms
[/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 2E. Check for proper pin-to-pin wiring and continuity.
[/TD]
[TD]Less than 10 ohms
[/TD]
[/TR]
[TR]
[TD="width: 15%"]STEP 3.
[/TD]
[TD="width: 40%"]Clear the fault code.
[/TD]
[TD="width: 60%"][/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 3A. Disable the fault code.
[/TD]
[TD]Fault Code 433 inactive
[/TD]
[/TR]
[TR]
[TD="width: 10%"][/TD]
[TD]STEP 3B. Clear the inactive fault code.
[/TD]
[TD]All faults cleared
[/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 1 - Check the intake manifold pressure sensor.


[HR][/HR]
Guided Step 1A - Inspect the sensor circuit for tampering.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch OFF.

[/TD]
[/TR]
[TR]
[TD]
Action

Inspect the sensor circuit for tampering.

• Check the intake manifold pressure sensor and the sensor harness for external wires or damaged harness braiding.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]No tampering
[/TD]
[TD]Remove and record tampering. If tampering has occurred, repair the circuit, and record the tampering.
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1B
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 1B - Inspect the harness and the sensor connector pins.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch OFF.
• Disconnect the sensor harness from the intake manifold pressure sensor.
• Flush and clean the connector pins, use electronic contact cleaner, Part Number 3824510.

[/TD]
[/TR]
[TR]
[TD]
Action

Inspect the harness and the sensor connector pins for:

• Loose connector
• Corroded pins
• Bent or broken pins
• Pushed back or expanded pins
• Moisture in or on the connector
• Missing or damaged connector seals
• Dirt or debris in or on the connector pins
• Connector shell broken
• Wire insulation damage
• Damaged connector locking tab.

For general inspection techniques, refer to Procedure 019-361 (Component Connector and Pin Inspection) in Section 19.[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]No damaged pins
[/TD]
[TD]
Repair the damaged pins. Repair or replace the engine harness, connector, or sensor, whichever has the damaged pins.

• Flush the dirt, debris, or moisture from the connector pins, use electronic contact cleaner, Part Number 3824510.
• Repair the engine harness. Refer to Procedure 019-201 (Weather Pack Connector Series) in Section 19. Refer to Procedure 019-202 (Metri-Pack Connector Series) in Section 19.
• Replace the engine harness. Refer to Procedure 019-043 (Engine Wiring Harness) in Section 19.
• Replace the intake manifold pressure sensor. Refer to Procedure 019-061 (Intake Manifold Pressure Sensor) in Section 19.

[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1C
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 1C - Read the fault codes.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch OFF.
• Connect all components.

[/TD]
[/TR]
[TR]
[TD]
Action

Read the fault codes.

• Start the engine and let it idle for 1 minute.
• Use Compulink™, Part Number 3823548, Echek™, Part Number 3824437, or INSITE™ electronic service tool, Part Number 3824638 to read the fault codes.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]Fault Code 433 is active
[/TD]
[TD]Repair complete.
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1D
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3B
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 1D - Check the intake manifold pressure sensor supply voltage.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Disconnect all pressure sensors from their connectors on the sensor harness, except the intake manifold pressure sensor.
• Disconnect the coolant level sensor or shorting plug from its connector on the sensor harness.
• Turn keyswitch ON.

[/TD]
[/TR]
[TR]
[TD]
Action

Check the intake manifold pressure sensor supply voltage.

• Install the intake manifold pressure sensor breakout cable, Part Number 3824776, between the sensor and the sensor harness connector.
• Measure the supply voltage from pin A to pin B of the breakout cable.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]4.75 to 5.25-VDC
[/TD]
[TD]Does not meet specifications.
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1E
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1D-1
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 1D-1 - Measure the voltage to the sensor.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Disconnect all pressure sensors from their connectors on the sensor harness.
• Disconnect the coolant level sensor or shorting plug from its connector on the sensor harness.
• Turn keyswitch ON.

[/TD]
[/TR]
[TR]
[TD]
Action

Check the intake manifold pressure sensor supply voltage.

• Install the intake manifold pressure sensor breakout cable, Part Number 3824776, to the sensor harness connector.
• Note: Do not connect the sensor to the breakout cable.
• Measure the supply voltage from pin A to pin B of the breakout cable.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]4.75 to 5.25-VDC. Replace the intake manifold pressure sensor. Refer to Procedure 019-061 (Intake Manifold Pressure Sensor) in Section 19.
[/TD]
[TD]Does not meet specifications.
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3B
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1D-2
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 1D-2 - Measure the voltage from the ECM.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch “ON”.
• Disconnect the sensor harness connector from the ECM.

[/TD]
[/TR]
[TR]
[TD]
Action

Measure the voltage out of the ECM.

• Measure the voltage from pin 2 to pin 13 of the ECM sensor port.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]4.75 to 5.25-VDC. Replace the engine harness. Refer to Procedure 019-043 (Engine Wiring Harness) in Section 19.
[/TD]
[TD]Replace the ECM and call for pre-authorization. Upon receipt of authorization, refer to Procedure 019-031 (Electronic Control Module (ECM)) in Section 19.
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1E
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 1E - Check the intake manifold pressure signal.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Disconnect pin 26 of the sensor harness connector from the ECM.
• Install the intake manifold pressure sensor breakout cable, Part Number 3824776, between the sensor and the sensor harness connector.
• Turn keyswitch ON.

[/TD]
[/TR]
[TR]
[TD]
Action

Check the intake manifold pressure signal.

• Measure the signal voltage by installing the breakout cable's signal (pin C) and return (pin B) connectors into the multimeter.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]0.42 to 0.58-VDC
[/TD]
[TD]Does not meet specifications.
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1E-3
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1E-1
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 1E-1 - Check for a short circuit from pin to pin.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch “OFF”.
• Disconnect the sensor harness connector from the ECM.
• Disconnect all sensors and the CLS or shorting plug from their connectors.

[/TD]
[/TR]
[TR]
[TD]
Action

Check for a short from pin to pin.

• Measure the resistance from pin 2 of the sensor harness connector at the ECM to all other pins.
• Measure the resistance from pin 13 of the sensor harness connector at the ECM to all other pins.
• Measure the resistance from pin 26 of the sensor harness connector at the ECM to all other pins.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]More than 100k ohms
[/TD]
[TD]
Repair or replace the engine harness.

• Refer to Procedure 019-043 (Engine Wiring Harness) in Section 19.
• Refer to Procedure 019-203 (AMP Connector Series) in Section 19.

[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1E-2
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 1E-2 - Check for continuity in sensor harness.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch OFF.
• Disconnect the sensor harness connector from the ECM.
• Disconnect the intake manifold pressure sensor from the engine harness.

[/TD]
[/TR]
[TR]
[TD]
Action

Check for continuity in the sensor harness.

• Measure the resistance from pin 2 of the sensor harness connector at the ECM to pin A of the sensor connector on the engine harness.
• Measure the resistance from pin 13 of the sensor harness connector at the ECM to pin B of the sensor connector on the engine harness.
• Measure the resistance from pin 26 of the sensor harness connector at the ECM to pin C of the sensor connector on the engine harness.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]Less than 10 ohms
[/TD]
[TD]
Correct pin-to-pin wiring or open circuit. Repair or replace engine harness.

• Refer to Procedure 019-043 (Engine Wiring Harness) in Section 19.
• Refer to Procedure 019-203 (AMP Connector Series) in Section 19.

[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 1E-3 - Check for alternate fuel sources.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch OFF.

[/TD]
[/TR]
[TR]
[TD]
Action

Check for alternate fuel sources. Look for alternate fuel sources creating extra boost:

• charge air cooler filled with oil
• blown or leaking turbo seals
• ether bottles
• sources external to engine, vapors, etc.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]No alternate sources
[/TD]
[TD]Remove alternate fuel sources.
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1E-4
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 1E-4 - Check for injectors out of specification.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Connect electronic service tool.
• Turn keyswitch ON.

[/TD]
[/TR]
[TR]
[TD]
Action

Check injectors for compliance with specifications.

• Run cylinder diagnostics with service tool.
• Note: Depending on symptoms, different tests can be required. See guidelines for recommended diagnostics tests. If diagnostics are inconclusive, consider cylinders with higher exhaust temperatures or excessive smoke or fuel knock.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]Injectors within specifications
[/TD]
[TD]Proceed with troubleshooting conclusions from injector diagnostic testing.
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 2A
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 2 - Check the sensor harness.


[HR][/HR]
Guided Step 2A - Inspect the harness and the ECM connector pins.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch OFF.
• Disconnect the sensor harness connector from the ECM.
• Flush and clean the connector pins, use electronic contact cleaner, Part Number 3824510.

[/TD]
[/TR]
[TR]
[TD]
Action

Inspect the harness and the ECM connector pins for:

• Loose connector
• Corroded pins
• Bent or broken pins
• Pushed back or expanded pins
• Moisture in or on the connector
• Missing or damaged connector seals
• Dirt or debris in or on the connector pins
• Connector shell broken
• Wire insulation damage
• Damaged connector locking tab.

For general inspection techniques, refer to Procedure 019-361 (Component Connector and Pin Inspection) in Section 19.[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]No damaged pins
[/TD]
[TD]
Repair the damaged pins. Repair or replace the engine harness, connector, or ECM, whichever has the damaged pins.

• Flush the dirt, debris, or moisture from the connector pins, use electronic contact cleaner, Part Number 3824510.
• Repair the engine harness. Refer to Procedure 019-203 (AMP Connector Series) in Section 19.
• Replace the engine harness. Refer to Procedure 019-043 (Engine Wiring Harness) in Section 19.
• Call for pre-authorization and replace the ECM.
• Upon receipt of authorization, refer to Procedure 019-031 (Electronic Control Module (ECM)) in Section 19.
• Replace the o-ring on the 28-pin connector if it is damaged or missing.
• Refer to Procedure 019-203 (AMP Connector Series) in Section 19.

[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 2B
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 2B - Read the fault codes.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch ON.
• Connect all components.

[/TD]
[/TR]
[TR]
[TD]
Action

Read the fault codes.

• Start the engine and let it idle for 1 minute.
• Use Compulink™, Part Number 3823548, Echek™, Part Number 3824437, or INSITE™ electronic service tool, Part Number 3824638 to read the fault codes.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]Fault Codes 433 is active
[/TD]
[TD]Repair complete.
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 2C
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3B
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 2C - Check for a short circuit from pin to pin.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch OFF.
• Disconnect the sensor harness from all pressure sensors and the CLS or CLS shorting plug from harness.
• Disconnect the sensor harness connector from the ECM.

[/TD]
[/TR]
[TR]
[TD]
Action

Check for a short circuit from pin to pin.

• Measure the resistance from pin 26 in the sensor harness connector to all other pins in the connector.
• Measure the resistance from pin 13 in the sensor harness connector to all other pins in the connector.
• Measure the resistance from pin 2 in the sensor harness connector to all other pins in the connector.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][TABLE]
[TR]
[TD]
[/TD]
[/TR]
[/TABLE]
[/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]More than 100k ohms
[/TD]
[TD]

• Repair or replace the engine harness.
• Refer to Procedure 019-203 (AMP Connector Series) in Section 19.
• Refer to Procedure 019-043 (Engine Wiring Harness) in Section 19.

[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 2D - Check for a short circuit to ground.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch OFF.
• Disconnect the sensor harness from the intake manifold pressure sensor.
• Disconnect the sensor harness connector from the ECM.

[/TD]
[/TR]
[TR]
[TD]
Action

Check for a short circuit to ground.

• Measure the resistance from pin 26 in the sensor harness connector to the engine block ground.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]More than 100k ohms
[/TD]
[TD]

• Repair or replace the engine harness.
• Refer to Procedure 019-203 (AMP Connector Series) in Section 19.
• Refer to Procedure 019-043 (Engine Wiring Harness) in Section 19.

[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 2E
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 2E - Check for proper wiring and continuity.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Turn keyswitch OFF.
• Disconnect sensor harness connector from ECM.
• Disconnect intake manifold pressure sensor from sensor harness.

[/TD]
[/TR]
[TR]
[TD]
Action

Check continuity of harness wiring.

• Measure the resistance from pin 2 of the sensor harness connector to pin A of the sensor connector.
• Measure the resistance from pin 13 of the sensor harness connector to pin B of the sensor connector.
• Measure the resistance from pin 26 of the sensor harness connector to pin C of the sensor connector.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]Less than 10 ohms
[/TD]
[TD]
Correct wiring or repair or replace harness.

• Repair or replace the engine harness.
• Refer to Procedure 019-203 (AMP Connector Series) in Section 19.
• Refer to Procedure 019-043 (Engine Wiring Harness) in Section 19.

[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 3 - Clear the fault code.


[HR][/HR]
Guided Step 3A - Disable the fault code.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Connect all the components.
• Connect INSITE™ electronic service tool,

[/TD]
[/TR]
[TR]
[TD]
Action

Disable the fault code.

• Start the engine and let it idle for 1 minute.
• Use INSITE™ electronic service tool to verify Fault code 433 is inactive.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]Fault Code 433 inactive
[/TD]
[TD]Return to the troubleshooting steps, or contact a Cummins® Authorized Repair Location if all the steps have been completed and checked again.
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 3B
[/SIZE]
[/TD]
[TD="bgcolor: #cccccc"][SIZE=+0]Go to 1A
[/SIZE]
[/TD]
[/TR]
[TR]
[TD="bgcolor: #cccccc"][/TD]
[TD="bgcolor: #cccccc"][/TD]
[/TR]
[/TABLE]

[HR][/HR]
Guided Step 3B - Clear the inactive fault code.

[TABLE]
[TR]
[TH="align: left"][TABLE]
[TR]
[TD]
Conditions

• Connect all the components.

[/TD]
[/TR]
[TR]
[TD]
Action

Clear the inactive fault code.

• Use Compulink™, Part Number 3823549, Echek™, Part Number 3824437, or INSITE™ electronic service tool, Part Number 3824638 to clear the inactive fault codes.

[/TD]
[/TR]
[/TABLE]
[/TH]
[TH="width: 50%, bgcolor: #cccccc, align: left"][/TH]
[/TR]
[TR]
[TH="bgcolor: #006600, align: left"]OK
[/TH]
[TH="bgcolor: #990000, align: left"]NOT OK
[/TH]
[/TR]
[TR]
[TD]All faults cleared
[/TD]
[TD]Troubleshoot any remaining active fault codes.
[/TD]
[/TR]
[/TABLE]

 

Where did you get that manual? I've been looking for one.

 

It from QuickServe online https://quickserve.cummins.com It's great for owner ops becasue it free for up to 5 ESN's. Repair shop need to pay a subscription for full access. Sign up and enter you engine serial # and you have access to all repair & parts info for up to 5 engines.

It's also in the Insite help file if you have access to that.

 

If you are testing ohms of each wire, from the sensor plug to the ECU with both disconnected, then 14.5k ohms mean high resistance and you have a problem in that wire to the ECU. Trace that wire and find the problem.