Step | Action | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Exterior Lights Schematics Connector End View Reference: Master Electrical Component List in Wiring Systems | |||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information | ||||||
2 |
Do the turn signal lamps and indicators operate properly? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 | ||||||
3 | Are only the turn signal indicators inoperative? | Go to Step 14 | Go to Step 4 | ||||||
4 | Does at least one turn signal on both sides operate properly? | Go to Step 9 | Go to Step 5 | ||||||
5 | Are all turn signals inoperative? | Go to Step 6 | Go to Step 8 | ||||||
6 | Using a scan tool, command the turn signals ON and OFF. Do the turn signals illuminate when commanded? | Go to Step 7 | Go to Step 13 | ||||||
7 | Test the ground circuit of the turn signal switch for high resistance or an open. Did you find and correct the condition? | Go to Step 20 | Go to Step 12 | ||||||
8 |
Do the inoperative turn signal lamps illuminate? | Go to Step 12 | Go to Step 15 | ||||||
9 |
Is the bulb OK? | Go to Step 10 | Go to Step 16 | ||||||
10 | Test the ground circuit of the inoperative lamp for high resistance, or an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 11 | ||||||
11 | Test the supply voltage circuit for the following:
Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 12 | ||||||
12 | Inspect for poor connections at the harness connector of the multifunction turn signal switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 17 | ||||||
13 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 18 | ||||||
14 | Inspect for poor connections at the harness connector of the instrument panel cluster (IPC). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 20 | Go to Step 19 | ||||||
15 | Repair the high resistance or open in the inoperative turn signal switch signal circuit of the BCM Refer to Wiring Repairs in Wiring Systems | Go to Step 20 | -- | ||||||
16 | Replace the bulb. Refer to Tail Lamp Assembly and /or Backup, Sidemarker, Stop, Turn Signal Bulb Replacement or Daytime Running Lamp, Park and Turn Signal Lamp and Bulb Replacement - Front . Did you complete the replacement? | Go to Step 20 | -- | ||||||
17 | Replace the multifunction turn signal switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column. Did you complete the replacement? | Go to Step 20 | -- | ||||||
18 | Replace the BCM. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 20 | -- | ||||||
19 | Replace the IPC. Refer to Control Module References in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? | Go to Step 20 | -- | ||||||
20 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 | ||||||
