C0236

DTC C0236

Circuit Description

The RPM signal circuit provides the EBCM with an indication of engine RPM to help determine TCS control methods and rates when a TCS event takes place.

DTC Descriptor

This diagnostic procedure supports the following DTC:

DTC C0236 Traction Control System (TCS) Engine RPM Signal Circuit

Conditions for Running the DTC

* The ignition switch is ON and the engine running.
* After 2 seconds starting, and if there is a undervoltage condition.

Conditions for Setting the DTC

The EBCM does not received an RPM input signal after 1 second, after the engine has been started.

Action Taken When the DTC Sets

If equipped, the following actions occur:

* A malfunction DTC is stored.
* The traction control system (TCS) is disabled. The ABS remains functional.

Conditions for Clearing the DTC

* The condition for DTC is no longer present and the scan tool Clear DTCs function is used.
* 100 ignition cycles have passed with no DTC(s) detected.

Diagnostic Aids

Perform a thorough inspection of the wiring. Perform a thorough inspection of the connectors. Failure to carefully and fully inspect the wiring and the connectors may result in misdiagnosis. Misdiagnosis causes part replacement with reappearance of the malfunction.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

2. If the instrument panel (I/P) tachometer is working properly, the cause of the malfunction is most likely between the powertrain control module (PCM) and the electronic brake control module (EBCM), or the EBCM itself.
9. At this point, the PCM is likely causing the malfunction. Refer to the on-board diagnostic (OBD) system check.

Step 1 - Step 7:

Step 8 - Step 14: