Signal Too Low - Intermittent Fault

Checking Wiring And Connectors







Check connector for intermittent contact resistance according to Checking wiring and terminals, Intermittent faults and intermittent loose connections according to Checking wiring and terminals. Intermittent faults (under Related Tests and Information)

Check cable between Engine Control Module (ECM) #B17 (#B27) and accelerator pedal (AP) position sensor #5 for an intermittent short-circuit to ground according to Checking wiring and terminals. Intermittent faults (under Related Tests and Information) and for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults (under Related Tests and Information).

Check cable between Engine Control Module (ECM) #B9 (#B19) and accelerator pedal (AP) position sensor #6 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults (under Related Tests and Information).

Check cable between engine control module (ECM) #B5 (#B15) and accelerator pedal (AP) position sensor #4 for an intermittent open-circuit according to Checking wiring and terminals. Intermittent faults (under Related Tests and Information).

Remedy as necessary

Other information:
- For connection of engine control module (ECM) breakout box, see Connecting the breakout box (under Scan Tool Connecting).
- To access/replace the accelerator pedal (AP) position sensor, see Replacing the accelerator pedal module.
- 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.
- Accelerator pedal (AP) position sensor #6 is power supply (5 V)
- Accelerator pedal (AP) position sensor #4 is a signal ground.
- For information about signals on 5-cyl, see Signal Specification (under Diagnostic Parameters and Pinout Values).
- For information about signals on 6-cyl, see Signal Specification (under Diagnostic Parameters and Pinout Values).

Continue with Test (Fault-Tracing Information - Intermittent Fault). Fault-Tracing Information - Intermittent Fault