Step | Action | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Exterior Lights Schematics Connector End View Reference: Master Electrical Component List | |||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |||||||
2 |
Do the turn signal lamps and indicators operate properly? | Go to Testing for Intermittent Conditions and Poor Connections | 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 . 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 . 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 . 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 . 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 . 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 . Did you complete the repair? | Go to Step 20 | -- | ||||||
16 | Replace the bulb. Refer to Park/Turn Signal Lamp Bulb Replacement . Did you complete the replacement? | Go to Step 20 | -- | ||||||
17 | Replace the multifunction turn signal switch. Refer to Turn Signal Multifunction Switch Replacement . Did you complete the replacement? | Go to Step 20 | -- | ||||||
18 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 20 | -- | ||||||
19 | Replace the IPC. Refer to Control Module References 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 | ||||||
