Traction Off Indicator Always On Oldsmobile
Circuit Description
The EBTCM goes through a self-test when the ignition is first turned to RUN. During this test, the EBTCM grounds both the ANTILOCK and the TRACTION OFF indicators for 2 to 4 seconds. This acts as a bulb test for the indicators.
Traction Control Switch
The traction control switch allows the driver to select the traction control mode (ON/OFF). When the Traction Control System is turned OFF, the TRACTION OFF indicator remains illuminated.
Diagnostic Aids
The following conditions may cause the TRACTION OFF indicator to be ON with no DTCs set:
| • | The Traction Control System is turned OFF by the driver. |
| • | A short to ground in either of the following circuits: |
| - | CKT 1571 |
| - | CKT 1572 |
| • | A malfunctioning traction control switch |
| • | A malfunctioning EBTCM |
Check for PCM DTCs
When the vehicle is equipped with traction control, any symptom that illuminates the ANTILOCK indicator also illuminates the TRACTION OFF indicator. Follow the ANTILOCK indicator diagnosis when both indicators are illuminated and no diagnostic trouble codes are set.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the ABS Diagnostic System Check performed? | -- | Go to Step 2 | |
2 |
Is the resistance less than the specified value? | 2 ohms | Go to Step 3 | Go to Step 5 |
3 | Use the J 39200 in order to measure the resistance between the J 38716 terminal 1 and terminal 44. Is the resistance less than the specified value? | OL (Infinite) | Go to Step 6 | Go to Step 4 |
4 | Use the J 39200 in order to measure the resistance between the J 38716 terminal 1 and terminal 25. Is the resistance less than the specified value? | OL (Infinite) | Go to Step 7 | Go to Step 10 |
5 | Repair the open or high resistance in CKT 1451. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
6 | Repair the short to ground in CKT 1572. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
7 |
Is the resistance less than the specified value? | OL (Infinite) | Go to Step 8 | Go to Step 9 |
8 | Replace the traction control switch. Refer to Electronic Traction Control Switch Replacement . Is the repair complete? | -- | -- | |
9 | Repair the short to ground in CKT 1571. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
10 | Replace the EBTCM. Refer to Electronic Brake and Traction Control Module Replacement . Is the repair complete? | -- | -- |
Traction Off Indicator Always On Buick
Circuit Description
The EBTCM goes through a self-test when the ignition is first turned to RUN. During this test, the EBTCM grounds both the ANTILOCK and the TRACTION OFF indicators for 2 to 4 seconds. This acts as a bulb test for the indicators.
Traction Control Switch
The traction control switch, located in the trip odometer reset switch, allows the driver to select the traction control mode (ON/OFF). When the Traction Control System is turned OFF, the TRACTION OFF indicator remains illuminated.
Diagnostic Aids
The following conditions may cause the TRACTION OFF indicator to be ON with no DTCs set:
| • | The Traction Control System is turned OFF by the driver. |
| • | A short to ground in either of the following circuits: |
| - | CKT 1571 |
| - | CKT 1572 |
| • | A malfunctioning traction control switch |
| • | A malfunctioning EBTCM |
Check for PCM DTCs
When the vehicle is equipped with traction control, any symptom that illuminates the ANTILOCK indicator also illuminates the TRACTION OFF indicator. Follow the ANTILOCK indicator diagnosis when both indicators are illuminated and no diagnostic trouble codes are set.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Was the ABS Diagnostic System Check performed? | -- | Go to Step 2 | |
2 |
Is the resistance less than the specified value? | 2 ohms | Go to Step 3 | Go to Step 5 |
3 | Use the J 39200 in order to measure the resistance between the J 38716 terminal 1 and terminal 44. Is the resistance less than the specified value? | OL (Infinite) | Go to Step 6 | Go to Step 4 |
4 | Use the J 39200 in order to measure the resistance between the J 38716 terminal 1 and terminal 25. Is the resistance less than the specified value? | OL (Infinite) | Go to Step 7 | Go to Step 10 |
5 | Repair the open or high resistance in CKT 1451. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
6 | Repair the short to ground in CKT 1572. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
7 |
Is the resistance less than the specified value? | OL (Infinite) | Go to Step 8 | Go to Step 9 |
8 | Replace the trip odometer reset switch. Refer to Electronic Traction Control Switch Replacement in Instrument Panel, Gauges and Console. Is the repair complete? | -- | -- | |
9 | Repair the short to ground in CKT 1571. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | -- | |
10 | Replace the EBTCM. Refer to Electronic Brake and Traction Control Module Replacement . Is the repair complete? | -- | -- |
