DTC 37

DTC 37 High System Voltage:

CIRCUIT DESCRIPTION
This DTC is designed to detect high vehicle voltage levels to the solenoid relay. High voltage may cause damage to the system.

DTC WILL SET WHEN
DTC 37 can only be set if the vehicle's speed is greater than 8 km/h (4 mph). If the solenoid power input voltage is greater than 17 volts, a malfunction exists.

ACTION TAKEN
A malfunction DTC is stored, ABS/TCS is disabled and the "ANTILOCK" and "TRACTION OFF" Indicator lamps are turned "ON."

DTC CHART TEST DESCRIPTION
Number(s) below refer to circled number(s) on the diagnostic chart.
1. Checks the voltage level being read by the Tech 1 across the Data Stream.
2. Checks actual charging system voltage output
3. Ensures the DTC does not reset.

DIAGNOSTIC AIDS
Possible causes:
^ Charging system malfunction.

An "intermittent" malfunction is most likely caused by a poor connection, rubbed through wire insulation, or a wire that is broken inside the insulation.

The frequency of the malfunction can be checked by using the enhanced diagnostic function of the Tech 1.

Any circuitry, that is suspected of causing the intermittent malfunction, should be thoroughly checked for backed out terminals, improper mating, broken locks, improperly formed or damaged terminals, poor terminal to wiring connections or physical damage to the wiring harness.