Dodge Dakota (R1). Manual — part 76
Symptom:
*FRONT WIPER INTERMITTENT INOP
POSSIBLE CAUSES
FRONT WIPER INTERMITTENT MODE SENSE CIRCUIT OPEN
FRONT WIPER INTERMITTENT SWITCH SIGNAL CIRCUIT OPEN
FRONT WIPER MOTOR LOW DRIVER CIRCUIT OPEN
FRONT WIPER RELAY CONTROL CIRCUIT OPEN
FRONT WIPER RELAY SIGNAL CIRCUIT OPEN
FUSED IGNITION SWITCH OUTPUT CIRCUIT-MOTOR
FUSED IGNITION SWITCH OUTPUT CIRCUIT-RELAY
FRONT WIPER INTERMITTENT SWITCH SIGNAL CIRCUIT SHORT TO GROUND
FRONT WIPER INTERMITTENT SWITCH SIGNAL CIRCUIT SHORT TO VOLTAGE
FRONT WIPER RELAY
FRONT WIPER SWITCH-DELAY
FRONT WIPER SWITCH-MODE
FRONT WIPER SWITCH-RELAY SIGNAL
CENTRAL TIMER MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Install a substitute relay in place of the Front Wiper Relay.
Turn the ignition on.
Select the Intermittent mode on the Front Wiper Switch.
Do the Wipers Operate Properly?
All
Yes
→
Replace the Front Wiper Relay in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→
2
Turn the ignition off.
Disconnect the Front Wiper Motor harness connector.
Using a 12-volt test light connected to ground, check the Fused Ignition Switch
Output circuit to the Front Wiper Motor.
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
→
No
→
Repair the affected Fused Ignition Switch Output circuit to the
Front Wiper Motor for an open. If the fuse is open make sure to
check for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
301
WINDSHIELD WIPER & WASHER
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Remove the Front Wiper Relay.
Using a 12-volt test light connected to ground, check both of the Fused Ignition
Switch Output circuits to the Front Wiper Relay.
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
→
No
→
Repair the affected Fused Ignition Switch Output circuit to the
Front Wiper Relay for an open. If the fuse is open make sure to
check for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the Front Wiper Switch harness connector.
Select the Intermittent mode with the Front Wiper Switch.
Measure the resistance of the Front Wiper Switch between the Fused Ignition Switch
Output pin and the Front Wiper Intermittent Switch Signal Pin.
Is the resistance between 2.5k and 20k ohms?
All
Yes
→
No
→
Replace the Front Wiper Switch (Multi- Function Switch) in
accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
5
Turn the ignition off.
Disconnect the Front Wiper Switch harness connector.
Select the Intermittent mode with the Front Wiper Switch.
Measure the resistance of the Front Wiper Switch between the Fused Ignition Switch
Output pin and the Front Wiper Intermittent Mode Sense Pin.
Is the resistance above 5.0 ohms?
All
Yes
→
Replace the Front Wiper Switch (Multi- Function Switch) in
accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→
6
Turn the ignition off.
Disconnect the Front Wiper Switch harness connector.
Select the Intermittent mode with the Front Wiper Switch.
Measure the resistance of the Front Wiper Switch between the Front Wiper Relay
Signal pin and the Front Wiper Motor Low Driver Pin.
Is the resistance above 5.0 ohms?
All
Yes
→
Replace the Front Wiper Switch (Multi- Function Switch) in
accordance with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→
302
WINDSHIELD WIPER & WASHER
*FRONT WIPER INTERMITTENT INOP —
Continued
TEST
ACTION
APPLICABILITY
7
Turn the ignition off.
Disconnect the Front Wiper Motor.
Disconnect the Central Timer module.
Measure the resistance of the Front Wiper Intermittent Mode Sense circuit.
Is the resistance above 5.0 ohms?
All
Yes
→
Repair the Front Wiper Intermittent Mode Sense Circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
No
→
8
Turn the ignition off.
Disconnect the Front Wiper Switch.
Disconnect the Central Timer module.
Measure the resistance of the Front Wiper Intermittent Switch Signal circuit.
Is the resistance above 5.0 ohms?
All
Yes
→
Repair the Front Wiper Intermittent switch signal Circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
No
→
9
Turn the ignition off.
Disconnect the Front Wiper Motor.
Disconnect the Front Wiper Switch.
Measure the resistance of the Front Wiper Motor Low Driver circuit from the Front
Wiper Motor harness connector to both cavities of the Front Wiper Switch harness
connector.
Is the resistance above 5.0 ohms?
All
Yes
→
Repair the Front Wiper Motor Low Driver Circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→
10
Turn the ignition off.
Remove the Front Wiper Relay.
Disconnect the Front Wiper Switch.
Measure the resistance of the Front Wiper Relay Signal circuit.
Is the resistance above 5.0 ohms?
All
Yes
→
Repair the Front Wiper Relay Signal Circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→
11
Turn the ignition off.
Disconnect the Front Wiper Switch.
Disconnect the Central Timer Module.
Measure the resistance between ground and the Front Wiper Intermittent Switch
Signal circuit
Is the resistance below 5.0 ohms?
All
Yes
→
Repair the Front Wiper Intermittent Switch Signal Circuit for a
short to Ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→
303
WINDSHIELD WIPER & WASHER
*FRONT WIPER INTERMITTENT INOP —
Continued
TEST
ACTION
APPLICABILITY
12
Turn the ignition off.
Disconnect the Front Wiper Switch.
Disconnect the Central Timer Module.
Using a 12-volt test light connected to ground, check the Front Wiper Intermittent
Switch Signal circuit.
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
→
Repair the Front Wiper Intermittent Switch Signal Circuit for a
short to Voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→
13
Turn the ignition off.
Remove the Front Wiper Relay.
Disconnect the Central Timer Module.
Measure the resistance of the Front Wiper Relay Control circuit.
Is the resistance above 5.0 ohms?
All
Yes
→
Repair the Front Wiper Relay Control Circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→
14
If there are no possible causes remaining, view repair.
All
Repair
Replace the Central Timer Module in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
304
WINDSHIELD WIPER & WASHER
*FRONT WIPER INTERMITTENT INOP —
Continued
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