Chrysler RG Voyager. Manual — part 302
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
1177
WINDSHIELD WIPER & WASHER
TEST
ACTION
APPLICABILITY
4
Turn the ignition on.
Turn the front wipers to an intermittent setting.
Using a 12-volt test light connected to 12-volts, back probe the Front Wiper Park
Switch Sense circuit at the Front Wiper Module harness connector.
NOTE: The test light should illuminate when the wipers are parked, then
turn off when the wipers move off of the parked position.
Does the test light turn on and off properly?
All
Yes
→ Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Front Wiper Module.
Perform BODY VERIFICATION TEST - VER 1.
1178
WINDSHIELD WIPER & WASHER
FRONT WIPER PARK SWITCH SHORT TO GND —
Continued
Symptom:
FRONT WIPER SWITCH MUX INPUT OPEN
POSSIBLE CAUSES
WIRING HARNESS INSPECTION
WINDSHIELD WIPER SWITCH MUX CIRCUIT OPEN
MULTIFUNCTION SWITCH MUX RETURN CIRCUIT OPEN
WIPER MUX CIRCUIT SHORTED TO VOLTAGE
BCM
MULTI-FUNCTION SWITCH
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, select Body, Body Controller and read the Front Wiper Sw volts.
Is the voltage above 4.8 volts?
All
Yes
→ Go To 2
No
→ Go To 6
2
Turn the ignition off.
Disconnect the Multi-Function Switch harness connector.
Disconnect the applicable BCM harness connector.
Measure the resistance of the Front Wiper Switch MUX circuit between the BCM
harness connector and the Multi-Function Switch harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 3
No
→ Repair the Front Wiper Switch MUX circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition off.
Disconnect the Multi-Function Switch harness connector.
Disconnect the applicable BCM harness connector.
Measure the resistance of the Multi-Function Switch MUX Return circuit between
the BCM harness connector and the Multi-Function Switch harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 4
No
→ Repair the Multi-Function Switch MUX Return circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the Multi-Function Switch harness connector.
Disconnect the applicable BCM harness connector.
Turn the ignition on.
Measure the voltage of the Front Wiper MUX Switch Signal circuit.
Is the voltage above 1.0 volt?
All
Yes
→ Repair the Front Wiper Switch MUX circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
1179
WINDSHIELD WIPER & WASHER
TEST
ACTION
APPLICABILITY
5
Turn the ignition off.
Disconnect the Multi-Function Switch harness connector.
Turn the ignition on.
Connect a jumper wire between the Front Wiper Switch MUX circuit and the
Mulit-Function Switch MUX Return circuit.
With the DRB, read the Front Wiper Sw volts?
Is the voltage below 0.5 volt?
All
Yes
→ Replace the Multi-Function Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
6
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.
1180
WINDSHIELD WIPER & WASHER
FRONT WIPER SWITCH MUX INPUT OPEN —
Continued
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