Test Description
The number below refers to the step number on the diagnostic table:
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 7 | Go to Step 4 | ||
4 | Are all of the turn signal lamps and indicators inoperative? | Go to Step 8 | Go to Step 5 | ||
Is there only one inoperative turn signal lamp? | Go to Step 6 | Go to Step 18 | |||
6 | Is the inoperative lamp a rear turn signal lamp? | Go to Step 12 | Go to Step 11 | ||
7 |
Does the scan tool indicate that the Turn Signal parameter is ON? | Go to Step 22 | Go to Step 17 | ||
8 |
Does the test lamp illuminate? | Go to Step 9 | Go to Step 26 | ||
9 | Connect a test lamp between the battery positive voltage circuit of the turn/hazard flasher module and a good ground. Does the test lamp illuminate? | Go to Step 10 | Go to Step 24 | ||
10 | Connect a test lamp between the battery positive voltage circuit of the turn/hazard flasher module and the ground circuit of the turn/hazard flasher module . Does the test lamp illuminate? | Go to Step 20 | Go to Step 25 | ||
11 |
Does the test lamp flash ON and OFF? | Go to Step 13 | Go to Step 16 | ||
12 |
Does the test lamp flash ON and OFF? | Go to Step 14 | Go to Step 16 | ||
13 | Connect a test lamp between the supply voltage circuit of the inoperative turn signal lamp and the ground circuit of the inoperative turn signal lamp. Does the test lamp flash ON and OFF? | Go to Step 23 | Go to Step 27 | ||
14 | Connect a test lamp between the supply voltage circuit of the inoperative turn signal lamp and the ground circuit of the inoperative turn signal lamp. Does the test lamp flash ON and OFF? | Go to Step 15 | Go to Step 27 | ||
15 | Connect a test lamp between the outage detection signal circuit of the inoperative turn signal lamp and the ground circuit of the inoperative turn signal lamp. Does the test lamp flash ON and OFF? | Go to Step 23 | Go to Step 19 | ||
16 | Test for an open or short to ground in the supply voltage circuit of the inoperative turn signal lamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 32 | Go to Step 20 | ||
17 | Test for an open or high resistance in the supply voltage circuit of the inoperative turn signal indicator. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 32 | Go to Step 22 | ||
18 | Test for an open or high resistance in the appropriate turn signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 32 | Go to Step 21 | ||
19 | Test for an open or high resistance in the outage detection signal circuit of the appropriate turn signal lamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 32 | Go to Step 20 | ||
20 | Inspect for poor connections at the harness connector of the turn/hazard flasher module. 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 32 | Go to Step 28 | ||
21 | Inspect for poor connections at the 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 32 | Go to Step 29 | ||
22 | Inspect for poor connections at the 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 32 | Go to Step 30 | ||
23 | Inspect for poor connections at the inoperative turn signal lamp. 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 32 | Go to Step 31 | ||
24 | Repair an open or short to ground in the battery positive voltage circuit of the turn/hazard flasher module . Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 32 | -- | ||
25 | Repair an open or high resistance in the ground circuit of the turn/hazard flasher module. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 32 | -- | ||
26 | Repair an open or short to ground in the ignition 1 voltage circuit of the turn signal switch . Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 32 | -- | ||
27 | Repair an open or high resistance in the ground circuit of the appropriate turn signal lamp. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 32 | -- | ||
28 | Replace the turn/hazard flasher module. Refer to Hazard and Turn Signal Flasher Replacement . Did you complete the replacement? | Go to Step 32 | -- | ||
29 | Replace the turn signal switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column. Did you complete the replacement? | Go to Step 32 | -- | ||
30 | 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 32 | -- | ||
31 | Replace the inoperative turn signal lamp. Refer to one of the following replacements:
Did you complete the replacement? | Go to Step 32 | -- | ||
32 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 | ||
