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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1730 (Lighting Systems) >> Diagnostic Information and Procedures >> Turn Signal Lamps and/or Indicators Inoperative

Turn Signal Lamps and/or Indicators Inoperative

WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Turn Signal Lamps and/or Indicators Inoperative

Step Action Yes No
Schematic Reference: Exterior Lights Schematics 
1 Did you perform the Lighting System Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Lighting Systems 
2
  1. Turn ON the ignition, with the engine OFF.
  2. Place the turn signal lever in the LEFT turn position.
  3. Place the turn signal lever in the RIGHT turn position.
Do the appropriate turn signal lamps and/or indicators illuminate for each action?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 Is only one turn signal lamp inoperative? Go to Step 6  Go to Step 4 
4 Is only one of the turn signal indicators inoperative? Go to Step 5  Go to Step 7 
5
  1. Turn OFF the ignition.
  2. Disconnect the instrument panel cluster (IPC). Refer to Instrument Panel Cluster (IPC) Replacement in Instrument Panel, Gages, and Console.
  3. Turn ON the ignition, with the engine OFF.
  4. Probe the inoperative turn signal supply voltage circuit of the IPC with a test lamp that is connected to a good ground.
  5. Place the turn signal lever in the position of the inoperative indicator.
Does the test lamp illuminate and flash.
Go to Step 10  Go to Step 14 
6
  1. Disconnect the inoperative turn signal lamp.
  2. Probe the turn signal supply voltage circuit of the inoperative lamp with a test lamp that is connected to a good ground.
  3. Place the turn signal lever in the position of the inoperative lamp.
Does the test lamp illuminate and flash?
Go to Step 15  Go to Step 16 
7 Do the hazard lamps operate properly? Go to Step 8  Go to Hazard Lamps Inoperative 
8
  1. Disconnect the turn/hazard-headlamp switch.
  2. Probe the turn signal flasher signal circuit with a test lamp that is connected to a good ground.
Does the test lamp illuminate and flash?
Go to Step 12  Go to Step 9 
9 Test the turn signal flasher signal circuit for an open, high resistance, or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 21  Go to Step 13 
10 Inspect the bulb of the inoperative turn signal indicator for an open filament.
Did you find an inoperative bulb?
Go to Step 19  Go to Step 11 
11 Inspect for poor connections at the harness connector of 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 21  Go to Step 17 
12 Inspect for poor connections at the harness connector of the turn/hazard-headlamp 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 21  Go to Step 18 
13 Inspect for poor connections at the harness connector of the turn/hazard-flasher. 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 21  Go to Step 20 
14 Repair an open, high resistance, or short to ground in the inoperative turn signal supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 21  -
15 Repair an open or high resistance in the ground circuit of the inoperative lamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 21  -
16 Repair an open, high resistance, or short to ground in the inoperative turn signal supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
Did you complete the repair?
Go to Step 21  -
17 Replace the IPC. Refer to Instrument Panel Cluster (IPC) Replacement in Instrument Panel, Gages, and Console.
Did you complete the replacement?
Go to Step 21  -
18 Replace the turn/hazard-headlamp switch. Refer to Multifunction, Turn Signal Switch Replacement in Steering Wheel and Column.
Did you complete the replacement?
Go to Step 21  -
19 Replace the inoperative turn signal indicator bulb. Refer to Instrument Cluster Lamp Replacement in Instrument Panel, Gages, and Console.
Did you complete the replacement?
Go to Step 21  -
20 Replace the turn/hazard-flasher.
Did you complete the replacement?
Go to Step 21  -
21 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 3