Circuit Description
The clutch pedal position switch is a normally closed switch. The powertrain control module (PCM) applies a voltage to the clutch pedal position switch circuit. When the clutch pedal position switch is depressed, the circuit is open and the PCM senses a high voltage. When the clutch pedal position switch is released, the clutch pedal position switch contacts close, causing the applied voltage to go low.
The PCM determines if the clutch pedal position switch has failed by not sensing a clutch switch transition. The PCM monitors vehicle speed from 0 to a predetermined speed.
Conditions for Running the DTC
No VSS DTCs.
Conditions for Setting the DTC
| • | Vehicle speed goes from 0 km/h (0 mph) to more than 39 km/h (24 mph) and back to 0 km/h (0 mph) for 2 seconds without the PCM detecting a clutch transition. |
| • | This occurs 7 times before the diagnostic reports a fault. |
Action Taken When the DTC Sets
| • | The powertrain control module (PCM) stores the DTC information into memory when the diagnostic runs and fails. |
| • | The malfunction indicator lamp (MIL) will not illuminate. |
| • | The PCM records the operating conditions at the time the diagnostic fails. The PCM stores this information in the Failure Records. |
Conditions for Clearing the DTC
| • | A last test failed, or current DTC, clears when the diagnostic runs and does not fail. |
| • | A history DTC will clear after 40 consecutive warm-up cycles, if no failures are reported by this or any other non-emission related diagnostic. |
| • | Use a scan tool in order to clear the DTC. |
Diagnostic Aids
Important:
• Remove any debris from the PCM connector surfaces before servicing
the PCM. Inspect the PCM connector gaskets when diagnosing/replacing
the PCM. Ensure that the gaskets are installed correctly.
The gaskets prevent contaminate intrusion into the PCM. • For any test that requires probing the PCM or a component
harness connector, use the J 35616
connector test adapter kit. Using this kit prevents damage
to the harness/component terminals. Refer to
Using Connector Test Adapters
in Wiring Systems.
For an intermittent condition, refer to Symptoms - Manual Transmission .
Test Description
The number below refers to the step number on the diagnostic table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform the Powertrain On-Board Diagnostic (OBD) System Check? | -- | Go to Step 2 | Go to Diagnostic System Check - Engine Controls in Engine Controls - 5.7 L |
Does the scan tool display change states when the clutch pedal is depressed and released? | -- | Go to Diagnostic Aids | Go to Step 3 | |
3 | Inspect the adjustment of the clutch pedal position switch. Refer to Clutch Pedal Position Switch Replacement in Clutch. Was an adjustment necessary? | -- | Go to Step 14 | Go to Step 4 |
4 |
Does the DMM display the specified voltage? | B+ | Go to Step 5 | Go to Step 6 |
5 |
Does the scan tool display the Clutch Switch Released? | -- | Go to Step 9 | Go to Step 8 |
6 | Test the continuity of the clutch pedal signal circuit using the DMM connected to ground. Refer to Testing for Continuity in Wiring Systems. Does the DMM display continuity? | -- | Go to Step 11 | Go to Step 7 |
7 |
Does the DMM display continuity? | B+ | Go to Step 10 | Go to Step 11 |
8 | Test the continuity of the clutch pedal ground circuit using the DMM. Refer to Testing for Continuity in Wiring Systems. Does the DMM display continuity? | -- | Go to Step 9 | Go to Step 12 |
9 |
Did you correct the condition? | -- | Go to Step 15 | Go to Step 13 |
10 |
Did you correct the condition? | -- | Go to Step 15 | Go to Step 14 |
11 | Repair the clutch pedal position switch signal circuit. Refer to Wiring Repairs in Wiring Systems. Is the action complete? | -- | Go to Step 15 | -- |
12 | Repair the clutch pedal position switch ground circuit. Refer to Wiring Repairs in Wiring Systems. Is the action complete? | -- | Go to Step 15 | -- |
13 | Replace the clutch pedal position switch. Refer to Clutch Pedal Position Switch Replacement in Clutch. Is the action complete? | -- | Go to Step 15 | -- |
14 |
Important:: Program the replacement PCM. Refer to Powertrain Control Module Replacement in Engine Controls - 5.7 L. Replace the PCM. Is the action complete? | -- | Go to Step 15 | -- |
15 |
Does the scan tool indicate that this test run and passed? | -- | Go to Step 16 | Go to Step 2 |
16 | Select the Capture Info option and the Review Info option using the scan tool. Are any DTCs displayed that you have not diagnosed? | -- | Go to the applicable DTC table | System OK |
