Fault Code 167: Accelerator Pedal Kickdown Switch
J1939: SA 3 SPN 559 FMI 13, 19, 20
Overview
The Transmission Control Module (TCM) receives the vehicle's Accelerator Pedal Kickdown Switch message from a vehicle Electronic Control Unit (ECU) over the Primary Data Link (J1939A). The Accelerator Pedal Kickdown Switch provides the TCM with the driver's accelerator pedal demand.
Detection
The TCM monitors Accelerator Pedal Kickdown Switch messages. If messages are not available or are invalid, the fault is set Active.
Conditions to Set Fault Code Active
FMI 13 - Out of Calibration: Accelerator Pedal Kickdown Switch message not available for 5 seconds.
FMI 19: Received Network Data in Error: Accelerator Pedal Kickdown Switch messages invalid for 5 seconds.
FMI 20 - Data Drifted High: Accelerator Pedal Kickdown Switch message not received for 5 seconds.
Fallback
FMI 13, 19, 20:
- Amber warning lamp on
- No degraded modes
- Accelerator Pedal Kickdown Switch may be inoperative
Conditions to Set Fault Code Inactive
FMI 13, 19: Accelerator Pedal Kickdown Switch messages available and valid for 10 seconds.
FMI 20: Key cycle and fault condition no longer exists.
Possible Causes
FMI 13, 19, 20:
- Vehicle Components
- Accelerator Pedal Kickdown Switch message not enabled
- Other vehicle ECU(s) faulted
- Vehicle Harness - Primary Data Link (J1939A)
- Wiring shorted to power, shorted to ground or open
- Terminals bent, spread, corroded, or loose
Note: Refer to OEM for troubleshooting a failed system.
Additional Tools
- None
Fault Code 167 Troubleshooting
Set vehicle parking brake and chock wheels.
Record transmission fault codes, FMIs, occurrences, and timestamps from Service Activity Report created during the Diagnostic Procedure.
If Fault Code 167 is Inactive and there are other Active vehicle or transmission fault codes, troubleshoot all Active fault codes. Go to Step V
If Fault Code 167 FMI 13 is Active, refer to OEM and enable vehicle Accelerator Pedal Kickdown Switch message (SPN 559). Go to Step V
If Fault Code 167 FMI 13 is Inactive, Go to Step V
If Fault Code 167 FMI 19, 20 is Active or Inactive, refer to OEM guidelines for repair of the vehicle Accelerator Pedal Kickdown Switch message (SPN 559). Go to Step V
Key off.
Reconnect all connectors and verify all components are properly installed.
Key on with engine off.
Connect ServiceRanger.
Go To “Fault Codes”.
Select “Clear All Faults”.
Operate vehicle and attempt to reset the fault code or duplicate the previous complaint.
Check for fault codes using ServiceRanger.
If no fault codes set and vehicle operates properly, test complete.
If Fault Code 167 sets Active, Go to Step A
If a fault code other than 167 sets Active, troubleshoot per Fault Code Isolation Procedure Index.