Turn Signal Lamps and/or Indicators Inoperative
Turn Signal Lamps and/or Indicators Inoperative
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Exterior Lights Schematics (H/D Trailer Wiring) , Exterior Lights Schematics (L/D Trailer Wiring) | |||
| 1 | Did you perform the Lighting Diagnostic System Check? | Go to Step 2 | Go to Diagnostic System Check - Lighting Systems |
| 2 |
|
Go to Testing for Electrical Intermittents in Wiring Systems | Go to Step 3 |
| 3 | Are all turn signal lamps inoperative? | Go to Step 7 | Go to Step 4 |
| 4 | Are both the front and rear turn signal lamps on one side only inoperative? | Go to Step 14 | Go to Step 5 |
| 5 | Are only the turn signal indicators inoperative? | Go to Step 15 | Go to Step 6 |
| 6 | Is only one turn signal lamp inoperative? | Go to Step 16 | - |
| 7 | Operate the hazard switch. Are the hazard lamps inoperative? |
Go to Step 8 | Go to Step 11 |
| 8 | With the multifunction switch still connected, connect a test lamp between the turn/hazard module signal circuit of the multifunction switch and a good ground. Does the test lamp flash on and off? |
Go to Step 19 | Go to Step 9 |
| 9 | Test the ground circuit of the turn/hazard flasher for an open. Refer to Circuit Testing
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 10 |
| 10 | Test the turn/hazard module signal circuit for high resistance, an open, or a short to ground. Refer to Circuit Testing
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 17 |
| 11 | Connect a test lamp between the turn/hazard module 2 supply voltage circuit of the turn/hazard flasher and a good ground. Does the test lamp illuminate? |
Go to Step 17 | Go to Step 12 |
| 12 | Test the turn/hazard module 2 supply voltage circuit of the turn/hazard flasher for high resistance, an open, or a short to ground. Refer to Circuit Testing
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 13 |
| 13 | Test the ignition 1 voltage circuit of the turn/hazard switch for high resistance, an open, or a short to ground. Refer to Circuit Testing
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 19 |
| 14 | Test the appropriate turn signal circuit for high resistance, an open, or a short to ground. Refer to Circuit Testing
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 19 |
| 15 |
|
Go to Step 18 | Go to Step 20 |
| 16 | Test the appropriate turn signal circuit for an open or high resistance. Refer to Circuit Testing
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 21 |
| 17 | Inspect for poor connections at the harness connector of the turn hazard flasher connector. Refer to Testing for Intermittent Conditions and Poor Connections
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 22 |
| 18 | Inspect for poor connections at the harness connector of the instrument cluster connector. Refer to Testing for Intermittent Conditions and Poor Connections
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 23 |
| 19 | Inspect for poor connections at the harness connector of the turn/hazard switch. Refer to Testing for Intermittent Conditions and Poor Connections
, and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 25 | Go to Step 24 |
| 20 | Repair the high resistance or an open in the turn signal indicator lamp circuit. Refer to Wiring Repairs
in Wiring Systems. Did you complete the repair? |
Go to Step 25 | - |
| 21 | Replace the turn signal lamp assembly. Refer to Parking and Turn Signal Lamp Replacement (Old Style) , or Tail/Turn Signal Lamp Replacement (Pickup) , Tail/Turn Signal Lamp Replacement (Pickup Step Side) . Did you complete the replacement? |
Go to Step 25 |
- |
| 22 | Replace turn/hazard flasher. Did you complete the replacement? |
Go to Step 25 | - |
| 23 | Replace the lamp or the instrument cluster as necessary. Refer to Instrument Cluster Bulb Replacement , or Instrument Cluster Replacement in Instrument Panel, Gauges and Console. Did you complete the replacement? |
Go to Step 25 | - |
| 24 | Replace the multifunction, turn signal and hazard switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle
, in Steering Wheel and Column-Standard or Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle
in Steering Wheel and Column-Tilt. Did you complete the replacement? |
Go to Step 25 | - |
| 25 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 3 |