DTC 13

Code 13: ABS Active Or Low Trac Lamp Circuit Malfunction.:

DTC 13 ABS Active Or Low Trac Lamp CKT Malfunction:

Circuit Description:
This DTC checks the state of the amber ABS active lamp, "LOW TRAC" to identify a situation in which the driver could not be alerted to a possible slippery driving condition. The amber ABS active lamp circuit is such that the EBCM provides a ground to turn "ON" the amber ABS active lamp.

DTC Will Set When:
DTC 13 can only be set during the three second bulb check or when the lamp is commanded "ON." If the EBCM cannot control the amber ABS active lamp for two seconds, a malfunction exists.

Action Taken:
A malfunction DTC is stored; however, ABS is not disabled.

DTC Chart Test Description:
Number(s) below refer to circled number(s) on the diagnostic chart.
1. Determines if the ABS active lamp can be properly controlled.
2. Determines if the ABS active lamp is "ON" constantly.
3. Checks for a short to ground in the ABS active lamp circuitry.
4. Determines if DTC 13 was set due to a EBCM malfunction.
5. Determines if DTC 13 was set due to a EBCM malfunction.
6. Determines if the ABS active lamp can be controlled manually.
7. Verifies the integrity of the ABS active lamp circuitry.
8. Determines if there is a short to voltage in the ABS active lamp circuitry.
9. Determines if DTC 13 was set due to an EBCM malfunction.

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 lamp test function of the Tech 1 may be used to command the lamp "ON" while looking for an intermittent malfunction in the ABS active lamp circuitry.

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 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.