DTC 36

CIRCUIT DIAGRAM





INSPECTION PROCEDURE

CIRCUIT DESCRIPTION:
This DTC is used to monitor the voltage level available to the Electronic Brake Control Module (EBCM). If the boltage drops below 11 volts, full performance of the ABS cannot be guaranteed. During ABS operation, there are several current requirements that will cause battery voltage to drop. Because of this, voltage is monitored prior to ABS operation to indicate good charging system condition and also during ABS operation when voltage may drop significantly.

FAILURE CONDITION:
DTC 36 can only be set if the vehicle's speed is greater than 8 km/h (5mph). If the switched battery voltage is less than 11.8 volts before ABS operation or 9.3 volts during ABS operation, a malfunction exists.

DIAGNOSTIC AIDS:
An "intermittent" malfunction may be 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, as described in "Enhanced Diagnostics.
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.
While performing a voltage load test, if it is noted that only ignition voltage drops below acceptable voltage levels, CKT "W/BI" should be checked for high resistance or an open condition.