Chrysler Pacifica. Manual — part 272

Symptom:

FRONT WIPER ON/OFF RELAY SHORT TO BATTERY-IPM

POSSIBLE CAUSES

WIPER ON/OFF RELAY CONTROL CIRCUIT SHORTED TO BATTERY

WIPER ON/OFF RELAY

INTEGRATED POWER MODULE

TEST

ACTION

APPLICABILITY

1

Turn the ignition off.
Remove the Wiper On/Off Relay from the IPM.
Disconnect the IPM C8 harness connector.
Turn the ignition on.
Measure the voltage of the Wiper On/Off Relay Control circuit at the IPM connector.
Is the voltage above 1.0 volt?

All

Yes

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

battery.
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 Integrated Power Module.

Perform BODY VERIFICATION TEST - VER 1.

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WINDSHIELD WIPER & WASHER

Symptom:

FRONT WIPER PARK SWITCH OPEN-IPM

POSSIBLE CAUSES

FRONT WIPER ON/OFF RELAY

FRONT WIPER PARK SWITCH

FRONT WIPER PARK SWITCH SENSE CIRCUIT OPEN

FRONT WIPER FUSED B(+) CIRCUIT OPEN

FRONT WIPER PARK SWITCH GROUND CIRCUIT OPEN

INTEGRATED POWER MODULE

INTERMITTENT WIRING AND CONNECTORS

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, erase DTCs.

Operate the Wiper system in all modes.
With the DRBIII

t, read DTCs.

Does the DTC reset?

All

Yes

→ Go To 2

No

→ Go To 8

2

Turn the ignition on..
With the DRBIII

t, erase DTCs.

Install a substitute relay in place of the Front Wiper On/Off Relay.
Operate the Wiper system in all modes.
With the DRBIII

t, read DTCs.

Does the DTC reset?

All

Yes

→ Go To 3

No

→ Replace the Front Wiper On/Off Relay in accordance with the

Service Information.
Perform BODY VERIFICATION TEST - VER 1.

3

Turn the ignition on.
With the DRBIII

t, erase DTCs.

Turn the ignition off.
NOTE: Place the Wipers in the

(parked( position.

Disconnect the Front Wiper Motor harness connector
Measure the resistance of the Park Switch between the Front Wiper Motor Ground
circuit and the Front Wiper Park Switch Sense circuit in the Front Wiper Motor
connector.
Is the resistance above 5.0 ohms?

All

Yes

→ Replace the Front Wiper Motor in accordance with the Service

Information.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 4

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WINDSHIELD WIPER & WASHER

TEST

ACTION

APPLICABILITY

4

Turn the ignition off.
Disconnect the Front Wiper Motor.
Disconnect the IPM C7 harness connector.
Measure the resistance of the Front Wiper Park Switch Sense circuit between the
IPM harness connector and the Front Wiper Motor harness connector.
Is the resistance above 5.0 ohms?

All

Yes

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

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 5

5

Turn the ignition off.
Disconnect the Front Wiper On/Off Relay.
Disconnect the IPM C7 harness connector.
Measure the resistance of the Front Wiper Park Switch Sense circuit between the
IPM harness connector and the Front Wiper On/Off Relay connector.
Is the resistance above 5.0 ohms?

All

Yes

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

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 6

6

Turn the ignition off.
Disconnect the Front Wiper Motor.
Measure the resistance between the Front Wiper Park Switch Ground circuit at the
Front Wiper Motor harness connector.
Is the resistance above 5.0 ohms?

All

Yes

→ Repair the Front Wiper Park Switch Ground Circuit for an open.

Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 7

7

Turn the ignition off.
Disconnect the Front Wiper Motor.
Disconnect the IPM C7 harness connector.
Turn the ignition on.
Measure the resistance of the Front Wiper Park Switch Sense circuit between the
Front Wiper Motor and the IPM harness connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Test Complete.

No

→ Replace the Integrated Power Module in accordance with the

Service Information.
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.

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WINDSHIELD WIPER & WASHER

FRONT WIPER PARK SWITCH OPEN-IPM —

Continued

Symptom:

FRONT WIPER PARK SWITCH SHORT TO GROUND-IPM

POSSIBLE CAUSES

FRONT WIPER ON/OFF RELAY

FRONT WIPER PARK SWITCH

FRONT WIPER PARK SWITCH SENSE CIRCUIT SHORT TO GROUND

INTEGRATED POWER MODULE

INTERMITTENT WIRING AND CONNECTORS

TEST

ACTION

APPLICABILITY

1

Turn the ignition on.
With the DRBIII

t, clear all IPM DTCs.

Operate the Wiper system in all modes.
With the DRBIII

t, read DTCs.

Does the DTC reset?

All

Yes

→ Go To 2

No

→ Go To 5

2

Turn the ignition on..
With the DRBIII

t, erase DTCs.

Turn the ignition off.
Install a substitute relay in place of the On/Off Wiper Relay.
Turn the ignition on.
Operate the Front Wiper system in all modes.
With the DRBIII

t, read DTCs.

Does the DTC reset?

All

Yes

→ Go To 3

No

→ Replace the Front Wiper On/Off Relay in accordance with the

Service Information.
Perform BODY VERIFICATION TEST - VER 1.

3

Turn the ignition on.
With the DRBIII

t, erase DTCs.

Turn the ignition off.
NOTE: Place the Wipers in the

(Parked( position.

Disconnect the Front Wiper Motor harness connector.
Measure the resistance of the Park Switch between the Front Wiper Motor ground
circuit and the Rear Wiper Park Switch Sense circuit in the Front Wiper Motor
connector.
Is the resistance below 5.0 ohms?

All

Yes

→ Replace the Front Wiper Motor in accordance with the Service

Information.
Perform BODY VERIFICATION TEST - VER 1.

No

→ Go To 4

1088

WINDSHIELD WIPER & WASHER