C0236

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Part 2 Of 2:

CIRCUIT DESCRIPTION
The RPM signal circuit provides the Electronic Brake and Traction Control Module (EBTCM) with an indication of engine RPM to help determine Traction Control System (TCS) control methods and rates when a TCS event takes place.

CONDITIONS FOR SETTING THE DTC
The EBTCM does not received an RPM input signal after 1 second, after the engine has been started.

ACTION TAKEN WHEN THE DTC SETS
^ A malfunction Diagnostic Trouble Code (DTC) is stored.
^ The TC indicator is turned on.
^ The TCS is disabled. 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 number(s) below refer to the step number(s) on the diagnostic table.
2. If the instrument panel tachometer is working properly, the cause of the malfunction is most likely between splice S228 and the EBTCM, or the EBTCM itself.
10. At this point, the Engine Control Module (ECM) is likely causing the malfunction. Refer to Powertrain OBD System Check.