Stop Lamps Inoperative Pickup
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important: The high mount stoplamp and the rear stop lamps share a common power supply that is the most probable cause for a complete system failure. This test is designed for a complete stop lamp failure. For any other symptoms, refer to Exterior Lights System Check . | ||||
1 | Did you perform the Exterior Lights System Check? | -- | Go to Step 2 | |
2 | Inspect the STOP LP fuse in the UBEC. Is the STOP LP fuse open? | -- | Go to Step 6 | Go to Step 3 |
3 |
Do the stop lamps light? | -- | Go to Step 5 | Go to Step 4 |
4 | Locate and repair the open in circuit in CKT 1540 (ORN) or CKT 17 (WHT). Is the repair complete? | -- | -- | |
5 | Adjust or replace the TCC/stoplamp switch. Refer to Stop Lamp Switch Replacement in Hydraulic Brakes. Is the repair complete? | -- | -- | |
6 |
Does continuity exist? | -- | Go to Step 7 | Go to Step 8 |
7 |
Is the repair complete? | -- | -- | |
8 | Connect a J 39200 DMM between the TCC/stoplamp switch connector terminal A and ground. Does continuity exist? | -- | Go to Step 9 | Go to Step 10 |
9 |
Is the repair complete? | -- | -- | |
10 |
Does continuity exist? | -- | Go to Step 11 | Go to Step 14 |
11 | Inspect CKT 895 (YEL) for a short to ground. Is a short present in CKT 895 (YEL)? | -- | Go to Step 13 | Go to Step 12 |
12 | Replace the UBEC. Is the repair complete? | -- | -- | |
13 |
Is the repair complete? | -- | -- | |
14 | Connect a J 39200 DMM between harness connector C211 cavity E6 and ground. Does continuity exist? | -- | Go to Step 15 | Go to Step 16 |
15 | Locate and repair the short to ground in CKT 1419 (DK GRN/WHT). Is the repair complete? | -- | -- | |
16 | Connect a J 39200 DMM between harness connector C211 cavity E7 and ground. Does continuity exist? | -- | Go to Step 17 | Go to Step 18 |
17 | Locate and repair the short to ground in CKT 1418 (YEL/BLK). Is the repair complete? | -- | -- | |
18 | Replace the multifunction switch. Refer to Multifunction, Turn Signal and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column. Is the repair complete? | -- | -- | |
Stop Lamps Inoperative Utility
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
|
Important: The high mount stoplamp and the rear stop lamps share a common power supply that is the most probable cause for a complete system failure. This test is designed for a complete stop lamp failure. For any other symptoms, refer to Exterior Lights System Check . | ||||
1 | Did you perform the Exterior Lights System Check? | -- | Go to Step 2 | |
2 | Inspect the STOP LP fuse in the UBEC. Is the STOP LP fuse open? | -- | Go to Step 6 | Go to Step 3 |
3 |
Do the stop lamps light? | -- | Go to Step 5 | Go to Step 4 |
4 | Locate and repair the open in circuit in CKT 1540 (ORN) or CKT 17 (WHT). Is the repair complete? | -- | -- | |
5 | Adjust or replace the TCC/stoplamp switch. Refer to Stop Lamp Switch Replacement in Hydraulic Brakes. Is the repair complete? | -- | -- | |
6 |
Does continuity exist? | -- | Go to Step 7 | Go to Step 8 |
7 |
Is the repair complete? | -- | -- | |
8 | Connect a J 39200 DMM between the TCC/stoplamp switch connector terminal A and ground. Does continuity exist? | -- | Go to Step 9 | Go to Step 10 |
9 |
Is the repair complete? | -- | -- | |
10 | Connect a J 39200 DMM between harness connector C211 cavity E6 and ground. Does continuity exist? | -- | Go to Step 11 | Go to Step 12 |
11 | Locate and repair the short to ground in CKT 1419 (DK GRN/WHT). Is the repair complete? | -- | -- | |
12 | Connect a J 39200 DMM between harness connector C211 cavity E7 and ground. Does continuity exist? | -- | Go to Step 13 | Go to Step 14 |
13 | Locate and repair the short to ground in CKT 1418 (YEL/BLK). Is the repair complete? | -- | -- | |
14 | Replace the multifunction switch. Refer to Multifunction, Turn Signal and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column - Standard. Is the repair complete? | -- | -- | |
