DTC 67

Fig. 379 Code 67: Left Front EMB Circuit Open Or Shorted To Ground:

Left Front EMB Circuit Open Or Shorted To Ground:

Circuit Description:
This DTC is designed to detect shorts to ground and opens in the EMB release circuit. A short to ground between the EMB and the ABS EBCM will cause the EMB to be energized indefinitely at an uncontrolled current, causing the EMB to be destroyed.

DTC Will Set When:
DTC 67 can be set only when the left front EMB is commanded "OFF" (not released). A malfunction exists if the EBCM detects the left front EMB control circuit is constantly at ground.

Action Taken:
A malfunction DTC is stored, ABS is disabled and the "ABS" warning lamp is turned "ON."

DTC Chart Test Description:
Number(s) below refer to circled number(s) on the diagnostic chart.
1. Checks for a short to ground in the EMB control circuitry.
2. Checks for an open in the EMB control circuitry.
3. Checks for an open in the EMB battery feed circuit.
4. Ensures the EMB is not internally shorted to ground.
5. Ensures EMB is not internally open.
6. Checks for short to ground in EMB battery feed circuit.
7. Ensures malfunction was not due to physical damage of the circuitry.

Diagnostic Aids:
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 as causing the intermittent complaint, 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.