C1237

CIRCUIT DESCRIPTION
The circuit detects high vehicle voltage levels to the solenoid relay. High voltage may cause damage to the system.

CONDITIONS FOR SETTING THE DTC
All of the following conditions occur:
^ The vehicle speed is greater than 8 km/h (5 mph).
^ The battery positive voltage (B+) is greater than 17 volts.

ACTION TAKEN WHEN THE DTC SETS
^ A malfunction Diagnostic Trouble Code (DTC) is stored.
^ The ABS/TCS/Stabilitrak is disabled.
^ The ABS indicator is turned ON.
^ The TRACTION CONTROL indicator is turned ON.
^ The DIC displays the SERVICE STABILITY SYS message.

CONDITIONS FOR CLEARING THE DTC
^ The condition for DTC is no longer present and you used scan tool Clear DTCs function.
^ The condition for DTC is no longer present and you used the On-Board Clear DTCs function.
^ The Electronic Brake and Traction Control Module (EBTCM) rides not detect the DTC in 50 drive cycles.

DIAGNOSTIC AIDS
^ If an intermittent malfunction exists refer to Intermittents and Poor Connections Diagnosis in Diagrams..
^ A possible cause of this condition is overcharging.

TEST DESCRIPTION
The numbers below refer to step numbers on the diagnostic table.
2. Checks to see what the EBTCM is reading as the voltage.
3. Checks the actual battery voltage.