| ONE TURN SIGNAL LAMP DOES NOT ILLUMINATE |
1. Ineffective or missing bulb. |
1. Test and replace turn signal bulb as required. |
| 2. Ineffective ground circuit. |
2. Test and repair open ground circuit as required. |
| 3. Ineffective feed circuit. |
3. Test and repair open right or left turn signal feed circuit as required. |
| 4. Ineffective TIPM inputs or outputs. |
4. Use a diagnostic scan tool to test the TIPM inputs and outputs as required. Refer to the appropriate Diagnostic Information. |
| 5. Ineffective CCN inputs or outputs. |
5. Use a diagnostic scan tool to test the TIPM inputs and outputs as required. Refer to the appropriate Diagnostic Information. |
| 6. Ineffective SCCM inputs or outputs. |
6. Use diagnostic scan tool to diagnose LIN data bus. Refer to the appropriate Diagnostic Information. Check CCN for DTC's. |
| ALL RIGHT SIDE AND/OR ALL LEFT SIDE TURN SIGNAL LAMPS DO NOT FLASH |
1. Ineffective switch. |
1. Test and replace left multi-function switch or SCCM as required. |
| 2. Ineffective feed circuit. |
2. Test and repair open right or left turn signal feed circuit as required. |
| 3. Ineffective CCN inputs or outputs. |
3. Use a diagnostic scan tool to test the CCN inputs and outputs as required. Refer to the appropriate Diagnostic Information. |
| 4. Ineffective TIPM inputs or outputs. |
4. Use a diagnostic scan tool to test the TIPM inputs and outputs as required. Refer to the appropriate Diagnostic Information. |
| ALL RIGHT SIDE OR ALL LEFT SIDE TURN SIGNALS FLASH TOO RAPIDLY (MORE THAN 100 FLASHES PER MINUTE) |
1. Ineffective or missing bulb. |
1. Test and replace faulty bulb as required. |
| 2. Ineffective ground circuit. |
2. Test and repair open ground circuit as required. |
| 3. Ineffective feed circuit. |
3. Test and repair open right or left turn signal feed circuit as required. |