Conditions for Clearing the DTC
- The DTC will be current for as long as the fault is present and it will be latched for the respective ignition cycle.
- A history DTC will be cleared after 100 error-free ignition cycles.
DTC B1017 or B3970
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Wiper/Washer Schematics Connector End View Reference: Wiper/Washer Connector End Views |
||||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | - | Go to Step 2 | Go to Diagnostic System Check - Vehicle |
| 2 |
|
- | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
| 3 |
|
- | Go to Step 4 | Go to Step 8 |
| 4 | Connect a test lamp from the battery positive voltage supply circuit terminal to the ground circuit terminal in the rear wiper motor harness connector. Does the test lamp illuminate? |
- | Go to Step 5 | Go to Step 9 |
| 5 |
|
10-14 V | Go to Step 6 | Go to Step 7 |
| 6 | Test the rear wiper motor control circuit for high resistance. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 12 |
| 7 | Test the rear wiper motor control circuit for an open or short to ground. Refer to Circuit Testing
and Wiring Repairs
. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 10 |
| 8 | Repair the battery positive voltage circuit to the rear wiper motor. Refer to Wiring Repairs
. Did you complete the repair? |
- | Go to Step 14 | - |
| 9 | Repair the rear wiper motor ground circuit for an open or high resistance. Refer to Wiring Repairs
. Did you complete the repair? |
- | Go to Step 14 | - |
| 10 | Inspect for poor connections at the harness connector of the rear wiper motor. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 11 |
| 11 | Replace the rear wiper motor. Refer to Wiper Motor Replacement - Rear (Trailblazer, Envoy) . Did you complete the replacement? |
- | Go to Step 14 | - |
| 12 | Inspect for poor connections at the harness connector of the LGM. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
- | Go to Step 14 | Go to Step 13 |
| 13 | Replace the LGM. Refer to Control Module References
for replacement, setup and programming. Did you complete the replacement? |
- | Go to Step 14 | - |
| 14 |
|
- | Go to Step 2 | System OK |