Dodge Ram. Manual — part 137
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Instrument Cluster C2 harness connector.
Disconnect the Multi- Function Switch harness connector.
Measure the resistance between ground and the Wash/beam Select Switch Feed
circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the Wash/Beam Select Switch Feed circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace and configure the Instrument Cluster in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
545
WINDSHIELD WIPER & WASHER
MIC-WASH-BEAM INPUT CIRCUIT SHORTED —
Continued
Symptom:
MIC-WIPER SWITCH INPUT CIRCUIT OPEN
When Monitored and Set Condition:
MIC-WIPER SWITCH INPUT CIRCUIT OPEN
When Monitored:
With the ignition on.
Set Condition:
The Instrument Cluster detects above 5.0 volts on the multi-function
circuit.
POSSIBLE CAUSES
INTERMITTENT CONDITION
MULTI- FUNCTION SWITCH
INTERMITTENT WIPER SWITCH SENSE CIRCUIT OPEN
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, clear all MIC DTC’s.
Turn the Wipers ON.
With the DRBIII
t, read the DTC information.
Does the DRBIII
t read: Wiper Switch Input Circuit Open?
All
Yes
→ Go To 2
No
→ The condition that caused the symptom is currently not present.
Inspect the related wiring for a possible intermittent condition.
Look for any chafed, pierced, pinched, or partially broken wires.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Multi- Function Switch harness connector.
Ensure that the Multi- Function Switch is in the Off position.
Measure the internal resistance of the Multi- Function Switch between cavity 2 and
cavity 4.
Does the Multi- Function Switch measure more than 5.0 ohms?
All
Yes
→ Replace the Multi- Function Switch in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
546
WINDSHIELD WIPER & WASHER
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Multi- Function Switch harness connector.
Disconnect the Instrument Cluster C2 harness connector.
Measure the resistance of the Intermittent Wiper Switch Sense circuit.
Is the resistance above 5.0 ohms?
All
Yes
→ Repair the Intermittent Wiper Switch Sense circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace and configure the Instrument Cluster in accordance with
the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
547
WINDSHIELD WIPER & WASHER
MIC-WIPER SWITCH INPUT CIRCUIT OPEN —
Continued
Symptom:
MIC-WIPER SWITCH INPUT CIRCUIT SHORTED
When Monitored and Set Condition:
MIC-WIPER SWITCH INPUT CIRCUIT SHORTED
When Monitored:
With the ignition on.
Set Condition:
The Instrument Cluster detects the multifunction circuit voltage is below
0.05 volts.
POSSIBLE CAUSES
INTERMITTENT CONDITION
MULTI- FUNCTION SWITCH
INTERMITTENT WIPER SWITCH SENSE CIRCUIT SHORT TO GROUND
INSTRUMENT CLUSTER
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, clear all MIC DTC’s.
Turn the Wipers ON.
With the DRBIII
t, read the DTC information.
Does the DRBIII
t read: Wiper Switch Input Circuit Short?
All
Yes
→ Go To 2
No
→ The condition that caused the symptom is currently not present.
Inspect the related wiring for a possible intermittent condition.
Look for any chafed, pierced, pinched, or partially broken wires.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Multi- Function Switch harness connector.
Turn the ignition on.
With the DRBIII
t, read DTCs.
Does the DRBIII
t display: Wiper Switch Input Circuit Open?
All
Yes
→ Replace the Multi- Function Switch in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
548
WINDSHIELD WIPER & WASHER
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