DTC 11

11 ABS WARNING OR LOW TRAC CIRCUIT MALFUNCTION

DTC 11 ABS Warning Or Low Trac Circuit Malfunction (Part 1 Of 2):

DTC 11 ABS Warning Or Low Trac Circuit Malfunction (Part 2 Of 2):

DTC 11 ABS Warning Or Low Trac Circuit Malfunction:

CIRCUIT DESCRIPTION:
This DTC checks the state of both the amber ABS warning lamp and the blue "LOW TRAC" lamp to identify a situation in which the driver could not be alerted to a system malfunction or of possible slippery driving conditions. Due to an integral lamp driver module within the instrument panel cluster, the EBCM must provide a ground to turn the amber ABS warning lamp "OFF." The blue "LOW TRAC" lamp circuit is such that the EBCM provides a ground to turn "ON" the blue "LOW TRAC" lamp.

DTC WILL SET WHEN:
DTC 11 can only be set during the three second bulb check or when either of the lamps are commanded "ON." If the EBCM cannot control either the amber ABS warning lamp or the blue "LOW TRAC" 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 warning lamp can be properly controlled.
2. Determines if the lamp is "ON" constantly.
3. Checks for other DTCs which could turn "ON" the ABS warning lamp.
4. Determines if the ABS warning lamp can be turned "OFF" manually.
5. Checks the integrity of the ABS warning lamp circuitry.
6. Checks for a short to voltage on the ABS warning lamp circuitry.
7. Determines if a malfunctioning EBCM is the cause of DTC 11.
8. Verifies that the other I/P indicator lamps function properly.
9. Determines if the ABS warning lamp can be turned "ON" manually.
10. Checks for a short to ground in the ABS warning lamp circuitry.
11. Verifies condition of the Fuse 39, I/P Electronics IGN.
12. Determines if DTC 11 was set due to an EBCM malfunction.
13. Determines if the "LOW TRAC" lamp can be properly controlled.
14. Determines if the "LOW TRAC" lamp is "ON" constantly.
15. Checks for a short to ground in the "LOW TRAC" lamp circuitry.
16. Determines if DTC 11 was set due to a EBCM malfunction.
17. Determines if DTC 11 was set due to a EBCM malfunction.
18. Determines if the "LOW TRAC" lamp can be controlled manually.
19. Verifies the integrity of the "LOW TRAC" lamp circuitry.
20. Determines if there is a short to voltage in the "LOW TRAC" lamp circuitry.
21. Determines if DTC 11 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 warning lamp or in the "LOW TRAC" 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.