79-fc131iss.pdf

© 2008 Cummins Inc., Box 3005, Columbus, IN 47202-3005 U.S.A. Printed from QuickServe ® Online. All Rights Reserved. Last Modified: 02-Mar-2011 File: 79-fc131iss Page 1 of 2 Fault Code 131 (ISS) Accelerator Position Sensor Circuit CODES REASON EFFECT Fault Code: 131 PID(P), SID(S): P091 SPN: 91 FMI: 3 Lamp: Red SRT: 00-084 High voltage detected at accelerator position signal pin 11 of the OEM harness connector. Severe derate (power and speed). Accelerator Position Sensor Circuit Circuit Description: The accelerator position sensor sends a signal to the electronic control module (ECM) when the driver pushes on the accelerator pedal. The accelerator position circuit contains three wires: +5 VDC supply (wire 18), return ground (wire 19), and signal (wire 11). Component Location: The accelerator position sensor is located on the accelerator pedal. Shop Talk: If all wiring and sensors check good, replace the accelerator position sensor circuit wires between the accelerator pedal and ECM with new wires. Run wires through, or around, the bulkhead without using the bulkhead connector. Test with these wires. If fault clears, replace the OEM harness. Seal the bulkhead openings around the wires to prevent toxic, noxious fumes from seeping into the operator area. The ECM and accelerator pedal must be calibrated to each other for proper engine response. This is required when a new accelerator pedal is installed, replaced, an ECM is replaced, a new calibration is downloaded to the ECM, or the accelerator pedal wiring is disconnected while keyswitch is “ON”. With keyswitch “ON”, slowly push the accelerator to the floor and release. Do this three times. This recalibrates the ECM and accelerator pedal. Note: The three wires in the accelerator position sensor circuit must be twisted together. Refer to Troubleshooting Fault Code t05-131iss

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File: 79-fc131iss Page 1 of 2

Fault Code 131 (ISS)

Accelerator Position Sensor Circuit

CODES REASON EFFECT

Fault Code: 131PID(P), SID(S): P091SPN: 91FMI: 3Lamp: RedSRT: 00-084

High voltage detected ataccelerator position signal pin 11of the OEM harness connector.

Severe derate (power and speed).

Accelerator Position Sensor Circuit

Circuit Description:The accelerator position sensor sends a signal to the electronic control module (ECM) when the driver pushes on theaccelerator pedal. The accelerator position circuit contains three wires: +5 VDC supply (wire 18), return ground (wire 19),and signal (wire 11).

Component Location:The accelerator position sensor is located on the accelerator pedal.

Shop Talk:If all wiring and sensors check good, replace the accelerator position sensor circuit wires between the accelerator pedaland ECM with new wires. Run wires through, or around, the bulkhead without using the bulkhead connector. Test withthese wires. If fault clears, replace the OEM harness. Seal the bulkhead openings around the wires to prevent toxic,noxious fumes from seeping into the operator area.The ECM and accelerator pedal must be calibrated to each other for proper engine response. This is required when anew accelerator pedal is installed, replaced, an ECM is replaced, a new calibration is downloaded to the ECM, or theaccelerator pedal wiring is disconnected while keyswitch is “ON”. With keyswitch “ON”, slowly push the accelerator tothe floor and release. Do this three times. This recalibrates the ECM and accelerator pedal. Note: The three wires in theaccelerator position sensor circuit must be twisted together.

Refer to Troubleshooting Fault Code t05-131iss