Symptom:
FRONT WASHER OUTPUT OPEN
POSSIBLE CAUSES
INTERMITTENT WIRING AND CONNECTORS
FRONT WASHER MOTOR CONTROL CIRCUIT OPEN
FUSED ACCESSORY RELAY OUTPUT CIRCUIT
FRONT WASHER MOTOR CONTROL CIRCUIT SHORT TO VOLTAGE
FRONT WASHER PUMP MOTOR
FRONT CONTROL MODULE
TEST ACTION APPLICABILITY
1 Ignition on, engine off.
Press the Front Washer Switch.
Does the Front Washer Motor Function?All
Ye s®Go To 2
No®Go To 3
2 Turn the ignition on.
With the DRBIIIt, erase all BCM and FCM DTCs.
Turn the ignition off.
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
Ye s®Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
3 Turn the ignition off to the lock position.
Disconnect the Front Washer Pump Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine off.
Using a 12-volt test light connected to ground, check the Fused Accessory Relay
Output circuit in the Front Washer Pump Motor harness connector.
Does the test light illuminate brightly?All
Ye s®Go To 4
No®Repair the Fused Accessory Relay Output circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
961
WINDSHIELD WIPER & WASHER
TEST ACTION APPLICABILITY
4 Turn the ignition off to the lock position.
Disconnect the Front Washer Pump Motor harness connector.
Ignition on, engine off.
Using a 12-volt test light connected to 12 Volts, check the Front Washer Pump Motor
Control circuit in the Front Washer Pump Motor harness connector while pressing
the Front Washer Switch.
Does the test light illuminate brightly?All
Ye s®Replace the Front Washer Pump Motor in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 5
5 Turn the ignition off to the lock position.
Disconnect the Front Control Module harness connector.
Disconnect the Front Washer Pump Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Rear Washer Pump Motor Control Circuit from the
Front Control Module connector to the Rear Washer Pump Motor harness connector.
Is the resistance above 5.0 ohms?All
Ye s®Repair the Front Washer Pump Motor Control Circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 6
6 Turn the ignition off to the lock position.
Disconnect the Front Control Module connector.
Disconnect the Front Washer Pump Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the Front Washer Pump Motor
Control circuit.
Does the test light illuminate brightly?All
Ye s®Repair the Front Washer Pump Motor Control Circuit for a short
to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Front Control Module in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
962
WINDSHIELD WIPER & WASHER
FRONT WASHER OUTPUT OPEN ÐContinued
TEST ACTION APPLICABILITY
3 Turn the ignition off to the lock position.
Disconnect the Rear Washer Pump Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, check the Fused Accessory Relay
Output circuit in the Rear Washer Pump Motor harness connector.
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
Ye s®Go To 4
No®Repair the Fused Accessory Relay Output circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4 Turn the ignition off to the lock position.
Disconnect the Rear Washer Pump Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Using a 12-volt test light connected to 12 Volts, check the Rear Washer Pump Motor
Control circuit in the Rear Washer Pump Motor harness connector while pressing the
Rear Washer Switch.
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
Ye s®Replace the Rear Washer Pump Motor in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 5
5 Turn the ignition off to the lock position.
Disconnect the Front Control Module harness connector.
Disconnect the Rear Washer Pump Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Rear Washer Pump Motor Control Circuit from the
Front Control Module connector to the Rear Washer Pump Motor harness connector.
Is the resistance above 5.0 ohms?All
Ye s®Repair the Rear Washer Pump Motor Control Circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 6
6 Turn the ignition off to the lock position.
Disconnect the Front Control Module connector.
Disconnect the Rear Washer Pump Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the Rear Washer Pump Motor
Control circuit.
Does the test light illuminate brightly?All
Ye s®Repair the Rear Washer Pump Motor Control Circuit for a short
to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Front Control Module in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
979
WINDSHIELD WIPER & WASHER
REAR WASHER OUTPUT OPEN ÐContinued
TEST ACTION APPLICABILITY
3 Turn the ignition off to the lock position.
Disconnect the Rear Wiper Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, check the Rear Wiper Motor Control
circuit in the Rear Wiper Motor harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Turn ON the Rear Wiper Motor.
Does the test light illuminate brightly?All
Ye s®Go To 4
No®Go To 5
4 Turn the ignition off to the lock position.
Disconnect the Rear Wiper Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Using a 12-volt test light connected to 12 Volts, check the Rear Wiper Motor ground
circuit in the Rear Wiper Motor harness connector.
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
Ye s®Replace the Rear Wiper Motor in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No®Repair the Rear Wiper Motor ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
5 Turn the ignition off to the lock position.
Disconnect the Body Control Module harness connector.
Disconnect the Rear Wiper Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Rear Wiper Motor Control Circuit from the Body
Control Module harness connector to the Rear Wiper Motor harness connector.
Is the resistance above 5.0 ohms?All
Ye s®Repair the Rear Wiper Motor Control Circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 6
6 Turn the ignition off to the lock position.
Disconnect the Body Control Module harness connector.
Disconnect the Rear Wiper Motor harness connector.
Note: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the Rear Wiper Motor Control
circuit.
Is the test light on?All
Ye s®Repair the Rear Wiper Motor Control Circuit for a short to
voltage.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Body Control Module in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
981
WINDSHIELD WIPER & WASHER
REAR WIPER OUTPUT OPEN ÐContinued
TEST ACTION APPLICABILITY
2WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?All
Ye s®Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No®Test Complete.
3 Turn the ignition off.
Disconnect the Glow Plug Relay harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the ECM/PCM Relay Output
circuit.
Does the test light illuminate brightly?All
Ye s®Go To 4
No®Repair the ECM/PCM Relay Output circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
4 Turn the ignition off.
Install a substitute relay in place of the Glow Plug Relay.
Perform several ignition key cycles, pausing for at least 10 seconds between each
cycle.
Turn the ignition on.
With the DRB, read ECM DTCs.
Did this DTC reset?All
Ye s®Go To 5
No®Replace the Glow Plug Relay.
Perform ROAD TEST VERIFICATION - VER-2.
5 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Glow Plug Relay harness connector.
Remove the ECM/PCM Relay from the IPM.
Connect a jumper wire between cavity 1 and cavity 4 of the ECM/PCM Relay
connector.
Turn the ignition on.
Measure the voltage on the Glow Plug Relay Control circuit.
Is the voltage above 1.0 volt?All
Ye s®Repair the Glow Plug Relay Control circuit for a short to voltage.
Perform ROAD TEST VERIFICATION - VER-2.
No®Go To 6
85
DRIVEABILITY - DIESEL
P0380-GLOW PLUG CIRCUIT A OPEN CIRCUIT ÐContinued
Symptom:
P0403-EGR SOLENOID CIRCUIT OPEN CIRCUIT
When Monitored and Set Condition:
P0403-EGR SOLENOID CIRCUIT OPEN CIRCUIT
When Monitored: With the ignition on.
Set Condition: The ECM detects an open or short to ground on the EGR Solenoid Control
circuit.
POSSIBLE CAUSES
INTERMITTENT CONDITION
ECM/PCM RELAY OUTPUT CIRCUIT OPEN
EGR SOLENOID CONTROL CIRCUIT SHORTED TO GROUND
EGR SOLENOID CONTROL CIRCUIT OPEN
SUBSTITUTE EGR SOLENOID
ENGINE CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, erase ECM DTCs.
Perform several ignition cycles, turning the ignition off for at least 10 seconds
between each ignition cycle.
Monitor the DRB for ECM DTCs.
Did this DTC reset?All
Ye s®Go To 2
No®Go To 7
2 Turn the ignition off.
Disconnect the EGR Solenoid harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the ECM/PCM Relay Output
circuit.
Does the test light illuminate brightly?All
Ye s®Go To 3
No®Repair the ECM/PCM Relay Output circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
87
DRIVEABILITY - DIESEL
TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Radiator Fan Relay No. 1 harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the ECM/PCM Relay Output
circuit.
Did the test light illuminate brightly?All
Ye s®Go To 4
No®Repair the ECM/PCM Relay Output circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
4 Turn the ignition off.
Install a substitute relay in place of the Radiator Fan Relay No. 1.
Turn the ignition on.
With the DRB, actuate the Low Speed Fan Relay.
Do the Radiator Fans cycle on and off?All
Ye s®Replace Radiator Fan Relay No. 1.
Perform ROAD TEST VERIFICATION - VER-2.
No®Go To 5
5 Turn the ignition off.
Disconnect the Radiator Fan Relay No. 1 harness connector.
Disconnect the ECM harness connectors.
Measure the resistance between ground and the Low Speed Radiator Fan Control
circuit.
Is the resistance below 100k ohms?All
Ye s®Repair the Low Speed Radiator Fan Control circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
No®Go To 6
6 Turn the ignition off.
Disconnect the Radiator Fan Relay No. 1 harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Low Speed Radiator Fan Control circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 7
No®Repair the Low Speed Radiator Fan Control circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
7 If there are no possible causes remaining, view repair. All
Repair
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
93
DRIVEABILITY - DIESEL
P0480-FAN 1 CONTROL CIRCUIT OPEN CIRCUIT ÐContinued
TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Radiator Fan Relay No. 2 harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, check the ECM/PCM Relay Output
circuit.
Did the test light illuminate brightly?All
Ye s®Go To 4
No®Repair the ECM/PCM Relay Output circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
4 Turn the ignition off.
One at a time, install a substitute relay in place of Radiator Fan Relays No. 2 and No.
3.
Turn the ignition on.
With the DRB, actuate the High Speed Fan Relay.
Does one Radiator Fan cycle on and off?All
Ye s®Replace the Radiator Fan Relay that the substitute relay caused
the radiator fan to cycle on and off.
Perform ROAD TEST VERIFICATION - VER-2.
No®Go To 5
5 Turn the ignition off.
Disconnect the Radiator Fan Relays No. 2 and No. 3 harness connectors.
Disconnect the ECM harness connectors.
Measure the resistance between ground and the High Speed Radiator Fan Control
circuit.
Is the resistance above 100k ohms?All
Ye s®Go To 6
No®Repair the High Speed Radiator Fan Control circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
6 Turn the ignition off.
Disconnect the Radiator Fan Relay No. 2 harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the High Speed Radiator Fan Control circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 7
No®Repair the High Speed Radiator Fan Control circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
7 If there are no possible causes remaining, view repair. All
Repair
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
97
DRIVEABILITY - DIESEL
P0481-FAN 2 CONTROL CIRCUIT OPEN CIRCUIT ÐContinued