File: 12-fc131 Page 1 of 11 Fault Code 131 - JustAnswer

File: 12-fc131

Fault Code 131

Page 1 of 11

Accelerator Pedal or Lever Position Sensor Circuit - Voltage Above Normal, or Shorted to High Source

CODES

REASON

EFFECT

Fault Code: 131 PID(P), SID(S): P091 FMI: 3/3 Lamp: Red SRT:

Accelerator Pedal or Lever Position Sensor Circuit - Voltage Above Normal, or Shorted to High Source. High voltage detected at accelerator pedal or lever position circuit.

Severe derate in power output of the engine. Limp home power only.

Accelerator Pedal or Lever Position Sensor Circuit

Circuit Description: The accelerator pedal or lever position sensor is attached to the accelerator pedal or lever . The accelerator pedal or lever position sensor sends a signal to the electronic control module (ECM) when the accelerator pedal or lever is depressed and released. The accelerator pedal or lever position circuit contains three wires: accelerator pedal or lever Position +5 Volt Supply, accelerator pedal or lever Position Return, and accelerator pedal or lever Position Signal.

Component Location: The accelerator pedal or lever position sensor is located on the accelerator pedal or lever . Refer to the OEM manual.

Shop Talk: If troubleshooting an intermittent accelerator problem: The accelerator pedal or lever position sensor signal voltage can be monitored with the INSITETM electronic service tool, while flexing the harness to locate the intermittent connection. Possible causes of this fault include: ? accelerator pedal or lever position signal circuit shorted to battery or +5 volt supply ? Open accelerator pedal or lever return circuit in the harness or connections ? Accelerator supply shorted to battery ? Failed accelerator pedal or lever position sensor.

? 2008 Cummins Inc., Box 3005, Columbus, IN 47202-3005 U.S.A. All Rights Reserved.

Printed from QuickServe? Online. Last Modified: 18-Dec-2003

File: 12-fc131 Note: The three wires in the accelerator position sensor circuit must be twisted together.

Page 2 of 11

? 2008 Cummins Inc., Box 3005, Columbus, IN 47202-3005 U.S.A. All Rights Reserved.

Printed from QuickServe? Online. Last Modified: 18-Dec-2003

File: 12-fc131

TROUBLESHOOTING SUMMARY

Page 3 of 11

CAUTION To reduce the possibility of damaging a new ECM, all other active fault codes must be investigated prior to replacing the ECM.

CAUTION To reduce the possibility of pin and harness damage, use the following test leads when taking a measurement: Part Number 3823996 - female Weather-Pack test lead Part Number 3822758 - male Deutsch/AMP/Metri-Pack test lead.

STEPS STEP 1:

Check the fault codes.

SPECIFICATIONS

STEP 1A:

Check for sensor supply fault codes.

Fault Code 387 active?

STEP 1B:

Check for an active fault code.

Fault Code 131 active?

STEP 2: Check the accelerator pedal or lever position sensor circuit.

STEP 2A:

Inspect the accelerator pedal or lever position sensor and connector pins.

Dirty or damaged pins?

STEP 2B:

Check the accelerator pedal or lever position sensor supply voltage and return circuit.

4.75 to 5.25 VDC?

STEP 2C:

Check the circuit response.

Fault Code 132 active and Fault Code 131 inactive?

STEP 2D:

Check the fault codes and verify accelerator pedal or lever condition.

Fault Code 132 is active?

STEP 3: Check the ECM and OEM harness.

STEP 3A:

Inspect ECM and OEM harness connector pins.

Dirty or damaged pins?

STEP 3A-1:

Check for an open circuit in the OEM harness.

Less than 10 ohms?

STEP 3A-2:

Check for a pin-to-pin short circuit in the OEM harness.

Greater than 100k ohms?

STEP 3B:

Check for an inactive fault code.

Fault Code 131 inactive?

STEP 4: Clear the fault codes.

STEP 4A:

Disable the fault code.

Fault Code 131 inactive?

STEP 4B:

Clear the inactive fault codes.

All fault codes cleared?

SRT CODE

? 2008 Cummins Inc., Box 3005, Columbus, IN 47202-3005 U.S.A. All Rights Reserved.

Printed from QuickServe? Online. Last Modified: 18-Dec-2003

File: 12-fc131

TROUBLESHOOTING STEP

STEP 1: Check the fault codes.

STEP 1A:

Check for sensor supply fault codes.

Condition: ? Turn keyswitch ON. ? Connect INSITETM electronic service tool.

Action

Specification/Repair

check for sensor supply fault codes. ? Using INSITETM, read the fault codes.

Fault Code 387 active? YES

Fault Code 387 active? NO

STEP 1B:

Check for an active fault code.

Condition: ? Turn keyswitch ON. ? Connect INSITETM electronic service tool.

Action

check for an active fault code. ? Using INSITETM, read the fault codes.

Specification/Repair

Fault Code 131 active? YES

Fault Code 131 active? NO

Page 4 of 11

Next Step Fault Code 387 1B

Next Step 2A Inactive or Intermittent Fault Code, Procedure 019-362.

? 2008 Cummins Inc., Box 3005, Columbus, IN 47202-3005 U.S.A. All Rights Reserved.

Printed from QuickServe? Online. Last Modified: 18-Dec-2003

File: 12-fc131

STEP 2: Check the accelerator pedal or lever position sensor and circuit.

STEP 2A:

Inspect the accelerator pedal or lever position sensor and connector pins.

Condition: ? Turn keyswitch OFF. ? Disconnect the accelerator pedal or lever position sensor from the OEM harness.

Action

Specification/Repair

inspect the oem harness and sensor connector pins for the following: ? 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 ? Wire insulation damage ? Connector shell broken. For general inspection techniques, refer to Component Connector and Pin Inspection, Procedure 019-361.

Dirty or damaged pins? YES Repair: A defective connection has been detected in the sensor or harness connector. Clean the connector and pins. Repair the damaged harness, connector, or pins if possible. Refer to Procedure 019-071.

Dirty or damaged pins? NO

Page 5 of 11 Next Step 4A

2B

? 2008 Cummins Inc., Box 3005, Columbus, IN 47202-3005 U.S.A. All Rights Reserved.

Printed from QuickServe? Online. Last Modified: 18-Dec-2003

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