Signal Too High

ECM-9530 ACCELERATOR PEDAL (AP) POSITION SENSOR
SIGNAL TOO HIGH

Reading DTC status ECM-9530:




Note! When Reading the DTC status, other stored Diagnostic Trouble Codes (DTCs) and their status will also be listed.

- Read the Diagnostic Trouble Code (DTC) status. Check the status of the relevant Diagnostic Trouble Code (DTC).

Was the status of the relevant Diagnostic Trouble Code (DTC) permanent?
Yes - Skip to "Checking Components and Wiring"
No - Continue below.


Checking wiring and connectors



Check Accelerator Pedal (AP) position sensor for intermittent loose connections according to [1][2]Checking Wiring and Terminals. Intermittent Faults

Check signal cable between Engine Control Module (ECM) connector # B17 (# B29) and Accelerator Pedal (AP) position sensor # 5 for an intermittent short-circuit to supply voltage according to [1][2]Checking Wiring and Terminals. Intermittent Faults

Check signal cable between Engine Control Module (ECM) connector # B17 (# B29) and Accelerator Pedal (AP) position sensor # 5 for an intermittent open-circuit according to [1][2]Checking Wiring and Terminals. Intermittent Faults

Remedy as necessary.

Other information
- For connection of Engine Control Module (ECM) breakout box, Connecting the Breakout Box (ECM)
- To access/replace the accelerator pedal (AP) position sensor, Accelerator Pedal Module, Replacing
- For information about signals, Pinout Values and Diagnostic Parameters
- Accelerator Pedal (AP) position sensor # 5 transmits an analog signal that varies between approximately 0.45 V and approximately 5 V depending on Accelerator Pedal (AP) position.


Fault-tracing information
If the fault is intermittent, do not verify fault-tracing if the fault does not recur.
--Testing Complete--


Checking Component and Wiring



Visually check Accelerator Pedal (AP) position sensor connections according to Checking Wiring and Terminals. Permanent Fault

Check the cable between Engine Control Module (ECM) connector # B17 (# B27) and Accelerator Pedal (AP) position sensor # 5 for a short-circuit to voltage according to [1][2]Checking Wiring and Terminals. Permanent Fault

Check the cable between Engine Control Module (ECM) connector # B17 (# B29) and Accelerator Pedal (AP) position sensor # 5 for an open-circuit to voltage according to [1][2]Checking Wiring and Terminals. Permanent Fault

Remedy as necessary.

Other information:
- For connection of Engine Control Module (ECM) breakout box, Connecting the Breakout Box (ECM)
- To access/replace the accelerator pedal (AP) position sensor, Accelerator Pedal Module, Replacing
- Accelerator Pedal (AP) position sensor # 5 transmits an analog signal that varies between approximately 0.45 V and approximately 5 V depending on Accelerator Pedal (AP) position.
- For information about signals, Pinout Values and Diagnostic Parameters


Verification



Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reinstall connectors, components etc.
- Ignition on.
Read the analog signal. Try depressing and releasing the Accelerator Pedal (AP).
The value is between 6-9% when the Accelerator Pedal (AP) is unaffected and 80-90% when the Accelerator Pedal (AP) is fully depressed.

Do the values correspond?
Yes - Tesing Complete.
No - Continue below.


Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault-tracing for this diagnostic trouble code (DTC) or make another attempt.