Chrysler Voyager. Manual — part 306

Symptom:

REAR FOG INDICATOR OUTPUT OPEN

POSSIBLE CAUSES

INTERMITTENT WIRING AND CONNECTORS

REAR FOG LAMP INDICATOR CIRCUIT OPEN

REAR FOG LAMP INDICATOR GROUND CIRCUIT OPEN

REAR FOG LAMP INDICATOR CIRCUIT SHORT TO VOLTAGE

HEADLAMP SWITCH

BODY CONTROL MODULE

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, record and erase Body Control Module DTC’s.

Turn the ignition off, wait 15 seconds, then turn the ignition on.
Turn on the Rear Fog Lamps.
With the DRBIII

t, read DTCs.

Does the DRBIII

t display REAR FOG LAMP INDICATOR OPEN?

All

Yes

→ Go To 2

No

→ Go To 8

2

Turn the ignition off to the lock position.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Turn ON the Rear Fog Lamps.
Using a 12-volt test light connected to ground, back probe the Rear Fog Lamp
Indicator circuit in the Headlamp Switch harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?

All

Yes

→ Go To 3

No

→ Go To 6

3

Turn the ignition off to the lock position.
Disconnect the Body Control Module harness connector.
Disconnect the Headlamp Switch harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Rear Fog Lamp Indicator Ground circuit from the Body
Control Module harness connector to the Headlamp Switch harness connector.
Is the resistance above 5.0 ohms?

All

Yes

→ Repair the Rear Fog Lamp Indicator Ground circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 4

651

INSTRUMENT CLUSTER

TEST

ACTION

APPLICABILITY

4

Turn the ignition off to the lock position.
Disconnect the Body Control Module harness connector.
Disconnect the Headlamp Switch harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Measure the voltage of the Rear Fog Lamp Indicator circuit in the Headlamp Switch
harness connector.
Is the voltage above 0.5 volt?

All

Yes

→ Repair the Rear Fog Lamp Indicator circuit for a short to voltage.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 5

5

If there are no possible causes remaining, view repair.

All

Repair

Replace the Headlamp Switch.
Perform BODY VERIFICATION TEST - VER 1.

6

Turn the ignition off to the lock position.
Disconnect the Body Control Module harness connector.
Disconnect the Headlamp Switch harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Rear Fog Lamp Indicator circuit from the Body Control
Module harness connector to the Headlamp Switch harness connector.
Is the resistance above 5.0 ohms?

All

Yes

→ Repair the Rear Fog Lamp Indicator circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 7

7

If there are no possible causes remaining, view repair.

All

Repair

Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.

8

The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this
circuit.
Wiggle the wiring while checking for shorts and open circuits.
Were there any problems found?

All

Yes

→ Repair as necessary.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Test Complete.

652

INSTRUMENT CLUSTER

REAR FOG INDICATOR OUTPUT OPEN —

Continued

Symptom:

REAR FOG INDICATOR OUTPUT SHORT

POSSIBLE CAUSES

INTERMITTENT WIRING AND CONNECTORS

REAR FOG LAMP INDICATOR CIRCUIT SHORT TO GROUND

HEADLAMP SWITCH

BODY CONTROL MODULE

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, record and erase Body Control Module DTC’s.

Turn the ignition off, wait 15 seconds, then turn the ignition on.
With the DRBIII

t, read DTCs.

Does the DRBIII

t display REAR FOG LAMP INDICATOR SHORT TO GROUND?

All

Yes

→ Go To 2

No

→ Go To 6

2

Turn the ignition off to the lock position.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Turn ON the Rear Fog Lamps.
Using a 12-volt test light connected to ground, back probe the Rear Fog Lamp
Indicator circuit in the Headlamp Switch harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?

All

Yes

→ Go To 3

No

→ Go To 4

3

If there are no possible causes remaining, view repair.

All

Repair

Replace the Headlamp Switch.
Perform BODY VERIFICATION TEST - VER 1.

4

Turn the ignition off to the lock position.
Disconnect the Body Control Module harness connector.
Disconnect the Headlamp Switch harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the Rear Fog Lamp Indicator circuit.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the Rear Fog Lamp Indicator circuit for a short to ground.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 5

5

If there are no possible causes remaining, view repair.

All

Repair

Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.

653

INSTRUMENT CLUSTER

TEST

ACTION

APPLICABILITY

6

The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this
circuit.
Wiggle the wiring while checking for shorts and open circuits.
Were there any problems found?

All

Yes

→ Repair as necessary.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Test Complete.

654

INSTRUMENT CLUSTER

REAR FOG INDICATOR OUTPUT SHORT —

Continued