Schematic Reference: Exterior Lights Schematics

Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - Lighting Systems

1. Turn ON the ignition, with the engine OFF.
2. Observe the turn signal lamps and indicators.
3. Place the turn signal switch in the LH and RH on position.

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 4

Go to Step 5

1. Observe the turn signal lamps and indicators.
2. Place the turn signal switch in the OFF position.
3. Place the hazard switch in the ON position.

Do the hazard lamps operate?

Go to Step 6

Go to Hazard Lamps Inoperative

Are only the turn signal indicators inoperative?

Go to Step 7

Go to Step 9

Using a test lamp connected to ground, backprobe the ignition 1 voltage circuit of the C201 connector that is fed by the T/SIG fuse.

Does the test lamp illuminate?

Go to Step 27

Go to Step 20

1. Place the ignition in the OFF position.
2. Disconnect the instrument panel cluster connector.
3. Place the ignition in the ON position.
4. Place the turn signal switch in the appropriate on position.
5. Probe the turn lamp supply voltage circuit of the instrument panel cluster connector with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 8

Go to Step 34

Probe the ground circuit of the instrument panel cluster connector with a test lamp that is connected to battery voltage.

Does the test lamp illuminate?

Go to Step 25

Go to Step 33

Determine which of the following lamps are inoperative:

Is a front turn signal lamp inoperative?

Go to Step 16

Go to Step 10

Is a rear turn signal lamp inoperative?

Go to Step 13

Go to Step 11

1. Disconnect the inoperative mirror turn signal.
2. Probe between the supply voltage circuit and the ground circuit of inoperative mirror turn signal connector with a test lamp.
3. Place the turn signal switch in the RH or LH ON position.

Does the test lamp illuminate?

Go to Step 24

Go to Step 12

1. Probe the supply voltage circuit of inoperative mirror turn signal connector with a test lamp that is connected to ground.
2. Place the turn signal switch in the RH or LH ON position.

Does the test lamp illuminate?

Go to Step 31

Go to Step 32

1. Remove the inoperative rear turn signal lamp bulb.
2. Probe between the supply voltage circuit and the ground circuit of inoperative turn signal lamp bulb socket with a test lamp.
3. Place the turn signal switch in the RH or LH ON position.

Does the test lamp illuminate?

Go to Step 23

Go to Step 14

1. Disconnect the tail lamp connector.
2. Probe the turn signal supply voltage circuit of the tail lamp connector with a test lamp that is connected to ground.
3. Place the turn signal switch in the RH or LH ON position.

Does the test lamp illuminate?

Go to Step 15

Go to Step 22

With a test lamp that is connected to ground, probe between the turn signal supply voltage circuit and the ground circuit of the tail lamp connector.

Does the test lamp illuminate?

Go to Step 24

Go to Step 30

1. Disconnect the front turn signal lamp.
2. Probe the supply voltage circuit of the inoperative front turn signal lamp with a test lamp that is connected to a good ground.
3. Place the turn signal switch in the RH or LH ON position.

Does the test lamp illuminate?

Go to Step 17

Go to Step 18

Probe between the supply voltage circuit and the ground circuit of the inoperative front turn signal lamp with a test lamp.

Does the test lamp illuminate?

Go to Step 23

Go to Step 29

1. Place the ignition in the OFF position.
2. Disconnect the Daytime Running Lamps (DRL) control module connector.
3. Turn ON the ignition, with the engine OFF.
4. Probe the turn signal switch signal circuit of Daytime Running Lamps (DRL) control module connector with a test lamp that is connected to a good ground.
5. Place the turn signal switch in the RH or LH ON position.

Does the test lamp illuminate?

Go to Step 19

Go to Step 21

1. Connect a fused jumper between the turn signal switch signal circuit and the turn signal supply voltage circuit of the daytime running lamps control module. Refer to Circuit Testing in Wiring Systems.
2. Place the turn signal switch in the RH or LH ON position.
3. Probe the supply voltage circuit of inoperative front turn signal lamp with a test lamp that is connected to a good ground.

Does the test lamp illuminate?

Go to Step 26

Go to Step 28

Test for an open or high resistance in the ignition 1 supply voltage circuit of the turn signal switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 41

Go to Step 35

Test for an open or high resistance in the turn signal switch signal circuit of the Daytime Running Lamps (DRL) control module. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 41

Go to Step 27

Test for an open or high resistance in the turn signal supply voltage circuit of the inoperative rear turn signal. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 41

Go to Step 27

Inspect for poor connections at the inoperative turn signal lamp bulb socket. 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 41

Go to Step 39

Inspect for poor connections at the harness connector of the tail lamp or mirror turn signal. 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 41

Go to Step 38

Inspect for poor connections at the harness connector of the instrument panel cluster. 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 41

Go to Step 40

Inspect for poor connections at the harness connector of the daytime running lamps control 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 41

Go to Step 36

Inspect for poor connections at the harness connector of 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 41

Go to Step 37

Repair an open or high resistance in the supply voltage circuit of the front turn signal. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 41

--

Repair an open or high resistance in the ground circuit of the front turn signal. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 41

--

Repair an open or high resistance in the ground circuit of the tail lamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 41

--

Repair an open or high resistance in the ground circuit of the inoperative mirror turn signal. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 41

--

Repair an open or high resistance in the turn signal supply voltage circuit of the inoperative mirror turn signal. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 41

--

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

Did you complete the repair?

Go to Step 41

--

Repair 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 complete the repair?

Go to Step 41

--

Repair the short to ground in the ignition 1 supply voltage circuit of the turn signal switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 41

--

Replace the Daytime Running Lamps (DRL) control module. Refer to Daytime Running Lights (DRL) Control Module Replacement .

Did you complete the repair?

Go to Step 41

Replace the turn signal switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle .

Did you complete the repair?

Go to Step 41

--

Replace the inoperative turnlamp. Refer to the appropriate procedure:

Did you complete the repair?

Go to Step 41

--

Replace the inoperative turn signal bulb.

Did you complete the repair?

Go to Step 41

--

Replace the Instrument Cluster Panel (IPC). Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the repair?

Go to Step 41

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2

Schematic Reference: Exterior Lights Schematics

Did you review the Exterior Lighting System Description and Operation and perform the necessary inspections?

Go to Step 2

Go to Symptoms - 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 7

Go to Step 9

1. Observe the turn signal lamps and indicators.
2. Place the turn signal switch in the OFF position.
3. Place the hazard switch in the ON position.

Do the hazard lamps operate?

Go to Step 6

Go to Hazard Lamps Inoperative

Using a test lamp connected to ground, backprobe the ignition 1 voltage circuit of the C201 connector that is fed by the T/SIG fuse.

Does the test lamp illuminate?

Go to Step 15

Go to Step 16

1. Place the ignition in the OFF position.
2. Disconnect the instrument panel cluster connector.
3. Place the ignition in the ON position.
4. Place the turn signal switch in the appropriate on position.
5. Probe the turn lamp supply voltage circuit of the instrument panel cluster connector with a test lamp that is connected to ground.

Does the test lamp illuminate?

Go to Step 8

Go to Step 25

Probe the ground circuit of the instrument panel cluster connector with a test lamp that is connected to battery voltage.

Does the test lamp illuminate?

Go to Step 20

Go to Step 24

Is a rear turn signal lamp inoperative?

Go to Step 10

Go to Step 13

1. Remove the inoperative rear turn signal lamp bulb.
2. Probe between the supply voltage circuit and the ground circuit of inoperative turn signal lamp bulb socket with a test lamp.
3. Place the turn signal switch in the RH or LH ON position.

Does the test lamp illuminate?

Go to Step 18

Go to Step 11

1. Disconnect the tail lamp connector.
2. Probe the turn signal supply voltage circuit of the tail lamp connector with a test lamp that is connected to ground.
3. Place the turn signal switch in the RH or LH ON position.

Does the test lamp illuminate?

Go to Step 12

Go to Step 17

1. Place the turn signal switch in the RH or LH ON position.
2. With a test lamp that is connected to ground, probe between the turn signal supply voltage circuit and the ground circuit of the tail lamp connector.

Does the test lamp illuminate?

Go to Step 19

Go to Step 23

1. Turn OFF the ignition.
2. Probe the supply voltage circuit of the inoperative turn signal lamp with a test lamp that is connected to a good ground.
3. Turn ON the ignition, with the engine OFF.
4. Place the turn signal switch in the RH or LH ON position.

Does the test lamp illuminate?

Go to Step 14

Go to Step 15

1. Place the turn signal switch in the RH or LH ON position.
2. With a test lamp that is connected to ground, probe between the turn signal supply voltage circuit and the ground circuit of the inoperative turn signal.

Does the test lamp illuminate?

Go to Step 18

Go to Step 22

Test for an open or high resistance in the supply voltage circuit of the inoperative turn signal. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 31

Go to Step 27

Test for an open or high resistance in the ignition 1 supply voltage circuit of the turn signal switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 31

Go to Step 26

Test for an open or high resistance in the turn signal supply voltage circuit of the inoperative rear turn signal. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 31

Go to Step 27

Inspect for poor connections at the inoperative turn signal lamp bulb socket. 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 31

Go to Step 29

Inspect for poor connections at the harness connector of the tail 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 31

Go to Step 28

Inspect for poor connections at the harness connector of the instrument panel cluster. 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 31

Go to Step 30

Inspect for poor connections at the harness connector of 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 31

Go to Step 27

Repair an open or high resistance in the ground circuit of the inoperative turn signal. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 31

--

Repair an open or high resistance in the ground circuit of the tail lamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 31

--

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

Did you complete the repair?

Go to Step 31

--

Repair 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 complete the repair?

Go to Step 31

--

Repair the short to ground in one of the ignition 1 supply voltage circuit of the turn signal switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 31

--

Replace the turn signal switch. Refer to Multifunction, Turn Signal, and Hazard Switch Replacement - On Vehicle .

Did you complete the repair?

Go to Step 31

--

Replace the inoperative rear tail lamp assembly. Refer to Tail Lamp Replacement .

Did you complete the repair?

Go to Step 31

--

Replace the inoperative turn signal lamp bulb.

Did you complete the repair?

Go to Step 31

--

Replace the Instrument Cluster Panel (IPC). Refer to Instrument Cluster Replacement in Instrument Panel, Gages, and Console.

Did you complete the repair?

Go to Step 31

--

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2