The PCM monitors various parameters and will not allow traction control operation if any parameter falls below a specified value.
This diagnostic procedure supports the following DTC:
DTC C0240 Powertrain Control Module (PCM) Traction Control Not Allowed
The ignition is ON.
The PCM detects a malfunction and then causes TCS shut down until the malfunction has been corrected.
If equipped, the following actions occur:
• | The electronic brake control module (EBCM) disables the TCS for the duration of the ignition cycle. |
• | A DTC C0240 is stored. |
• | The TCS is disabled. |
• | If the TCS is again allowed to function, the indicator will be turned OFF, but the DTC will be stored. |
• | The condition for the DTC is no longer present and the DTC is cleared with a scan tool. |
• | The electronic brake control module (EBCM) automatically clears the history DTC when a current DTC is not detected in 100 consecutive drive cycles. |
The number below refers to the step number on the diagnostic table.
Step | Action | Yes | No |
---|---|---|---|
Schematic Reference: Antilock Brake System Schematics Connector End View Reference: Antilock Brake System Connector End Views | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |
2 |
Are any other DTCs set? | Go to Step 3 | |
3 | Is DTC C0240 set as a current code? | Go to Step 5 | Go to Step 4 |
Did DTC C0240 set as a current DTC? | Go to Step 5 | ||
5 | Perform the Powertrain OBD System Check. Refer to Diagnostic System Check - Vehicle . Did the vehicle pass the OBD System Check? | Go to Step 6 | |
6 |
Does the DTC reset? | Go to Step 2 | System OK |