Chrysler Voyager. Manual — part 388

TEST

ACTION

APPLICABILITY

4

Turn the ignition off.
Disconnect the Front Wiper Module harness connector.
Turn the ignition on.
With the DRB, select Body, Body Computer then Inputs/Outputs and read the Wiper
Park Sw state.
Connect one end of a jumper wire to the Front Wiper Park Switch Sense circuit at the
Front Wiper Module harness connector.
Momentarily connect the other end of the jumper wire to ground. Repeat this several
times.
Did the Switch state change between Open and Closed when connecting and
disconnecting the jumper?

All

Yes

→ Replace the Front Wiper Module.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 5

5

Turn the ignition off.
Disconnect the Front Wiper Module harness connector.
Disconnect the FCM from the IPM.
Measure the resistance of the Front Wiper Park Switch Sense circuit.
Is the resistance below 10.0 ohms?

All

Yes

→ Replace the Front Control Module.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Repair the Front Wiper Park Switch Sense circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

979

WINDSHIELD WIPER & WASHER

FRONT WIPER NOT PARKED —

Continued

Symptom:

FRONT WIPER ON RELAY OPEN

POSSIBLE CAUSES

FUSED B(+) CIRCUIT

WIPER ON/OFF RELAY

WIPER ON/OFF RELAY CONTROL CIRCUIT OPEN

FCM-ON/OFF RELAY DRIVER OPEN

TEST

ACTION

APPLICABILITY

1

Turn the ignition off.
Remove the Wiper On/Off Relay from the PDC.
Using a 12-volt test light connected to ground, probe both Fused B(+) circuits in the
PDC.
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 at each terminal?

All

Yes

→ Go To 2

No

→ Repair the Fused B(+) circuit(s) for an open.

Perform BODY VERIFICATION TEST - VER 1.

2

Install a substitute relay in place of the Wiper On/Off Relay.
Turn the ignition on.
Turn the wipers on.
Does the system operate correctly?

All

Yes

→ Replace the Wiper On/Off Relay.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 3

3

Turn the ignition off.
Remove the Wiper On/Off Relay from the PDC.
Disconnect the FCM from the IPM.
Connect a jumper wire between the Wiper On/Off Relay Control circuit at the IPM
connector to ground.
Measure the resistance between ground and the Wiper On/Off Relay Control circuit
in the PDC.
Is the resistance below 5.0 ohms?

All

Yes

→ Replace the Front Control Module.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Repair the Wiper On/Off Relay Control circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

980

WINDSHIELD WIPER & WASHER

Symptom:

FRONT WIPER ON RELAY SHORT TO BATT

POSSIBLE CAUSES

WIPER ON/OFF RELAY

WIPER ON/OFF RELAY CONTROL CIRCUIT SHORTED TO VOLTAGE

FCM

TEST

ACTION

APPLICABILITY

1

Turn the ignition off.
Remove the Wiper On/Off Relay from the PDC.
Disconnect the FCM from the IPM.
Turn the ignition on.
Measure the voltage of the Wiper On/Off Relay Control circuit at the PDC connector.
Is the voltage above 1.0 volt?

All

Yes

→ Repair the Wiper On/Off Relay Control circuit for a short to

voltage.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 2

2

Install a substitute relay in place of the Wiper On/Off Relay.
Turn the ignition on.
Turn the wipers on.
Does the system operate correctly?

All

Yes

→ Replace the Wiper On/Off Relay.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Replace the Front Control Module.

Perform BODY VERIFICATION TEST - VER 1.

981

WINDSHIELD WIPER & WASHER

Symptom:

FRONT WIPER PARK SWITCH SHORT TO GND

POSSIBLE CAUSES

FRONT CONTROL MODULE

FRONT WIPER MODULE

WIRING HARNESS INSPECTION

FRONT WIPER PARK SWITCH SENSE CIRCUIT SHORTED TO GROUND

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
Turn the Wipers on one of the intermittent settings.
With the DRB, select Body, Front Control Module, Inputs/Outputs and read the
Wiper Park Sw state.
Does the switch state change from Open to Closed during wiper operation?

All

Yes

→ Go To 2

No

→ Go To 3

2

Turn the ignition on.
With the DRBIII

t, erase all BCM and FCM DTCs.

Turn the ignition off.
NOTE: Visually inspect the related wiring harness and circuits. Look for
any chafed, pierced, pinched, or partially broken wires.
NOTE: Visually inspect the related wiring harness connectors. Look for
broken, bent, pushed out, or corroded terminals.
Note: Refer to any Technical Service Bulletins (TSB) that may apply.
Were any problems found?

All

Yes

→ Repair as necessary.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Test Complete.

3

Turn the ignition off.
Disconnect the Front Wiper Module harness connector.
Disconnect the FCM from the IPM.
Measure the resistance between ground and the Front Wiper Park Switch Sense
circuit.
Is the resistance below 1000.0 ohms?

All

Yes

→ Repair the Front Wiper Park Switch Sense circuit for a short to

ground.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 4

982

WINDSHIELD WIPER & WASHER