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

1. Turn ON the ignition, with the engine OFF.
2. Observe the turn signal lamps and indicators.
3. Turn ON and OFF the right and left turn signal lamps.

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

Are all of the turn signals and indicators inoperative?

Go to Step 5

Go to Step 4

Are only the turn signal indicators inoperative?

Go to Step 12

Go to Step 7

1. Turn OFF the ignition.
2. Disconnect the turn signal/hazard flasher module.
3. Connect a test lamp between the battery positive voltage circuit of the turn signal/hazard flasher module and a good ground.
4. Turn ON the ignition, with the engine OFF.

Does the test lamp illuminate?

Go to Step 6

Go to Step 19

1. Turn OFF the ignition.
2. Connect a test lamp between the battery positive voltage circuit of the turn signal/hazard flasher module and ground circuit of the turn signal/hazard flasher module.
3. Turn ON the ignition, with the engine OFF.

Does the test lamp illuminate?

Go to Step 10

Go to Step 20

1. Turn OFF the ignition.
2. Disconnect the inoperative turn signal bulb.
3. Connect a test lamp between the turn signal lamps supply voltage circuit of the inoperative turn signal bulb and the ground circuit of the inoperative turn signal bulb.
4. Turn ON the inoperative turn signal.

Does the test lamp flash ON and OFF?

Go to Step 18

Go to Step 8

Test the turn signal lamps supply voltage circuit of the inoperative turn signal bulb for a 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 27

Go to Step 9

Test the ground circuit of the inoperative turn signal bulb for a 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 27

Go to Step 10

1. Turn OFF the ignition.
2. Disconnect the turn signal/multifunction switch.
3. Connect a test lamp between the ignition 1 voltage circuit of the turn signal/multifunction switch and a good ground.
4. Turn ON the ignition, with the engine OFF.

Does the test lamp illuminate?

Go to Step 11

Go to Step 21

1. Turn OFF the ignition.
2. Reconnect the turn signal/multifunction switch.
3. Disconnect the turn signal/hazard flasher module.
4. Connect a test lamp between the inoperative turn signal cornering lamp supply voltage circuit of the turn signal/hazard flasher module and a good ground.
5. Turn ON the inoperative turn signal.

Does the test lamp illuminate?

Go to Step 15

Go to Step 13

1. Turn OFF the ignition.
2. Remove the inoperative turn signal indicator bulb.
3. Connect a test lamp between the turn signal lamps supply voltage circuit of the inoperative turn signal indicator bulb and the turn signal indicator bulb ground circuit of the inoperative turn signal indicator bulb.
4. Turn ON the turn signal with the inoperative turn signal indicator.

Does the test lamp flash ON and OFF?

Go to Step 17

Go to Step 14

Test the cornering lamp supply voltage circuit of the inoperative turn signal for a 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 27

Go to Step 16

Test the turn signal lamps supply voltage circuit of the inoperative turn signal indicator for a 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 27

Go to Step 22

Inspect for poor connections at the harness connector of the turn signal/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 27

Go to Step 25

Inspect for poor connections at the harness connector of the turn signal/multifunction 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 27

Go to Step 24

Inspect for poor connections at the inoperative turn signal indicator bulb. 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 27

Go to Step 23

Inspect for poor connections at the inoperative turn signal bulb. 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 27

Go to Step 26

Repair the open, high resistance or short to ground in the turn signal and hazard flasher module battery positive voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 27

--

Repair the open or high resistance in the turn signal/hazard flasher module ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 27

--

Repair the open or short to ground in turn signal/multifunction switch ignition 1 voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 27

--

Repair the open in the ground circuit of the inoperative turn signal indicator bulb. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 27

--

Replace the inoperative turn signal indicator bulb. Refer to Instrument Cluster Bulb Replacement in Instrument Panel, Gages and Console.

Did you complete the replacement?

Go to Step 27

--

Replace the turn signal/multifunction switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle in Steering Wheel and Column.

Did you complete the replacement?

Go to Step 27

--

Replace the turn signal/hazard flasher module. Refer to Hazard Lamp Flasher Replacement .

Did you complete the replacement?

Go to Step 27

--

Replace the inoperative turn signal bulb.

Did you complete the replacement?

Go to Step 27

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2