DTC Troubleshooting
TEST PROCEDURE - FAILURE OF EXTERNAL WATCHDOG
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| 1 | Perform an On-Board Diagnostic (OBD II) System Check. Is the check completed? |
- | Go to Step 2 | Go to ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK . |
| 2 |
Does the scan tool display P1606? |
- | Go to Step 3 | Go to Diagnostic Aids . |
| 3 | Inspect Ef30 or F10 fuse for open. Was a problem found? |
- | Go to Step 4 | Go to Step 5 |
| 4 | Replace the fuse as necessary. Is the action completed? |
- | System OK | - |
| 5 |
Was a problem found? |
- | Repair the wiring harness. | Go to Step 6 |
| 6 | Inspect the wiring harness for open between the fuses (Ef30 or F10) and the TCM terminals (B3, C15 or C16). Was a problem found? |
- | Repair the wiring harness. | Go to Step 7 |
| 7 | Inspect the wiring harness for open or short to ground between TCM terminals (B12 or B13) and G103. Was a problem found? |
- | Repair the wiring harness. | Go to Step 8 |
| 8 | Inspect the wiring harness for short to power between the terminals (B12 or B13) and G103. Was a problem found? |
- | Repair the wiring harness. | Go to Step 9 |
| 9 | Replace the TCM. Is the replacement complete? |
- | Go to Step 10 | - |
| 10 |
Does the scan tool indicate that this diagnostic has run and passed? |
- | Go to Step 11 | Go to Step 2 |
| 11 | Check if any DTCs are set. Are any DTCs displayed that have not been diagnosed? |
- | Go to applicable DTC table. | System OK |