DTC Troubleshooting
DTC TROUBLESHOOTING CHART
| Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
| 1 | Did you perform the DIAGNOSTIC SYSTEM CHECK ? | - | Go to Step 2. | Go to ON-BOARD DIAGNOSTIC (OBD II) SYSTEM CHECK . |
| 2 |
Does the voltage measure at the specified value? |
B+ | Go to Step 3. | Go to Step 7. |
| 3 |
Do the cruise control function switch resistance values measure between the specified values? |
Switch OFF = ∞ Switch ON = 0 Ω | Go to Step 4. | Go to Step 5. |
| 4 | Test the cruise control set/coast and resume/accelerate switch signal circuit for a high resistance, a short to voltage, or a short to ground between the cruise control switch and the Engine Control Module (ECM). Did you find and correct the condition? |
- | Go to Step 10. | Go to Step 6. |
| 5 | Inspect for poor connections at the connector of the multifunction switch. Did you find and correct the condition? |
- | Go to Step 10. | Go to Step 8. |
| 6 | Inspect for poor connections at the harness connector of the ECM. Did you find and correct the condition? |
- | Go to Step 10. | Go to Step 9. |
| 7 | Repair the high resistance in the ignition 1 voltage circuit. Did you complete the repair? |
- | Go to Step 10. | - |
| 8 | Did you complete the replacement? Did you complete the repair? |
- | Go to Step 10. | - |
| 9 | Replace the ECM. Did you complete the replacement? |
- | Go to Step 10. | - |
| 10 |
Does the DTC reset? |
- | Go to Step 2. | System OK |