2001 CHRYSLER VOYAGER ignition

TEST ACTION APPLICABILITY
11 Turn the ignition off.
Disconnect the Radiator Fan Relay harness connector.
Disconnect the IPM C2 harness connector.
Measure the resistance of the Radiator Fan Relay Control circuit between the IPM
harness connector and the Radiator Fan Relay harness connector.
Is the resistance below 5.0 ohms.All
Ye s®Go To 12
No®Repair the Radiator Fan Relay Control circuit for an open
between the Radiator Fan Relay harness connector and the IPM
harness connector.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
12 Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the IPM C3 harness connector.
Measure the resistance of the Radiator Fan Relay Control circuit between the IPM
harness connector and the PCM harness connector.
Is the resistance below 5.0 ohms.All
Ye s®Replace the IPM Fuse & Relay Center.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Repair the Radiator Fan Relay Control circuit for an open
between PCM harness connector and the IPM harness connector.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
213
DRIVEABILITY - GAS
P1491-RAD FAN CONTROL RELAY CIRCUIT ÐContinued

Symptom:
P1494-LEAK DETECT PUMP SW OR MECHANICAL FAULT
When Monitored and Set Condition:
P1494-LEAK DETECT PUMP SW OR MECHANICAL FAULT
When Monitored: Immediately after a cold start, with battery/ambient temperature
between 4ÉC (40ÉF) and 32ÉC (90ÉF) and coolant temperature within -12ÉC (10ÉF) of
battery/ambient.
Set Condition: The state of the switch does not change when the solenoid is energized.
POSSIBLE CAUSES
LDP VACUUM SUPPLY
WIRING HARNESS INTERMITTENT
LEAK DETECTION PUMP
LDP SWITCH SENSE CIRCUIT SHORTED TO GROUND
LDP SWITCH SENSE CIRCUIT OPEN
POWERTRAIN CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read DTC's.
Is the Good Trip displayed and equal to zero?All
Ye s®Go To 2
No®Go To 7
2 Turn the ignition off.
Disconnect the vacuum supply hose at the Leak Detection Pump.
Connect a vacuum gauge to the disconnected vacuum supply hose at the Leak
Detection Pump.
Start the engine and read the vacuum gauge.
Does the vacuum gauge read at least 13 in/Hg?All
Ye s®Go To 3
No®Repair leak or obstruction in vacuum hose as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
214
DRIVEABILITY - GAS

TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Leak Detection Pump harness connector.
Turn the ignition on.
With the DRBIIItin Inputs/Outputs, read the Leak Detect Pump Sw state.
While observing the Leak Detect Pump Sw state, connect a jumper wire between a 12
volt source and the LDP Switch Sense circuit.
Did the Leak Detect Pump Sw state change when the jumper was connected?All
Ye s®Replace the Leak Detection Pump.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
No®Go To 4
4 Turn the ignition off.
Disconnect the Leak Detection Pump harness connector.
Disconnect the Powertrain Control Module harness connectors.
Measure the resistance of the LDP Switch Sense circuit in the LDP harness
connector to ground.
Is the resistance below 5.0 Ohms?All
Ye s®Repair the LDP Switch Sense Circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
No®Go To 5
5 Turn the ignition off.
Disconnect the Leak Detection Pump harness connector.
Disconnect the Powertrain Control Module harness connectors.
Measure the resistance of the LDP Switch Sense circuit between the LDP harness
connector and the PCM harness connector.
Is the resistance below 5.0 Ohms?All
Ye s®Go To 6
No®Repair the LDP Switch Sense Circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
6 If there are no possible causes remaining, view repair. All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
7 At this time, the conditions required to set the DTC are not present.
Note: Use the Freeze Frame Data to help you duplicate the conditions that
set the DTC. Pay particular attention to the DTC set conditions, such as,
VSS, MAP, ECT, and Load.
Note: Visually inspect the related wiring harness. Look for any chafed,
pierced, pinched, or partially broken wires.
Note: Visually inspect the related wire harness connectors. Look for broken,
bent, pushed out, or corroded terminals.
Note: Refer to any Technical Service Bulletins (TSB's) that may apply.
Perform a wiggle test of the LDP wiring while the circuit is actuated with the DRB.
Listen for the LDP to quit actuating. Also watch for the Good Trip Counter to change
to 0.
Were any problems found?All
Ye s®Repair wiring harness/connectors as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
No®Test Complete.
215
DRIVEABILITY - GAS
P1494-LEAK DETECT PUMP SW OR MECHANICAL FAULT ÐContinued

Symptom:
P1495-LEAK DETECTION PUMP SOLENOID CIRCUIT
When Monitored and Set Condition:
P1495-LEAK DETECTION PUMP SOLENOID CIRCUIT
When Monitored: Immediately after a cold start, with battery/ambient temperature
between 4.4ÉC (40ÉF). F and 32ÉC (90ÉF). Coolant temperature within -12ÉC (10ÉF) of
battery/ambient.
Set Condition: The state of the solenoid circuit does not match the PCM's desired state.
POSSIBLE CAUSES
WIRING HARNESS INTERMITTENT
LEAK DETECTION PUMP
FUSED IGNITION SWITCH OUTPUT
LDP SOLENOID CONTROL CIRCUIT SHORTED TO GROUND
LDP SOLENOID CONTROL CIRCUIT OPEN
PCM
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read DTC's.
Is the Good Trip displayed and equal to zero?All
Ye s®Go To 2
No®Go To 7
2 Turn the ignition off.
Disconnect the Leak Detection Pump harness connector.
Using a 12-volt test light, connect one end to the Fused Ignition Switch Output
circuit and the other end to the LDP Solenoid Control circuit.
Turn the ignition on.
With the DRBIIIt, actuate the Leak Detection Pump.
Does the test light flash on and off.All
Ye s®Replace the Leak Detection Pump.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
No®Go To 3
216
DRIVEABILITY - GAS

TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Leak Detection Pump harness connector.
Turn the ignition on.
Using a 12-volt test light connected to ground, probe the Ignition Switch Output
circuit in the LDP harness connector.
Does the test light illuminate brightly?All
Ye s®Go To 4
No®Repair the Fused Ignition Switch Output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
4 Turn the ignition off.
Disconnect the Leak Detection Pump harness connector.
Disconnect the Powertrain Control Module harness connector.
Measure the resistance of the LDP Solenoid Control circuit in the LDP harness
connector to ground.
Is the resistance below 5.0 Ohms?All
Ye s®Repair the LDP Solenoid Control circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
No®Go To 5
5 Turn the ignition off.
Disconnect the Leak Detection Pump harness connector.
Disconnect the Powertrain Control Module harness connector.
Measure the resistance of the LDP Solenoid Control circuit between the LDP
Solenoid harness connector and the PCM harness connector.
Is the resistance below 5.0 Ohms?All
Ye s®Go To 6
No®Repair the LDP Solenoid Control circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
6 If there are no possible causes remaining, view repair. All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
7 At this time, the conditions required to set the DTC are not present.
Note: Use the Freeze Frame Data to help you duplicate the conditions that
set the DTC. Pay particular attention to the DTC set conditions, such as,
VSS, MAP, ECT, and Load.
Note: Visually inspect the related wiring harness. Look for any chafed,
pierced, pinched, or partially broken wires.
Note: Visually inspect the related wire harness connectors. Look for broken,
bent, pushed out, or corroded terminals.
Note: Refer to any Technical Service Bulletins (TSB's) that may apply.
Perform a wiggle test of the LDP wiring while the circuit is actuated with the DRB.
Listen for the LDP to quit actuating. Also watch for the Good Trip Counter to change
to 0.
Were any problems found?All
Ye s®Repair wiring harness/connectors as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 6.
No®Test Complete.
217
DRIVEABILITY - GAS
P1495-LEAK DETECTION PUMP SOLENOID CIRCUIT ÐContinued

Symptom:
P1496-5 VOLT SUPPLY, OUTPUT TOO LOW
When Monitored and Set Condition:
P1496-5 VOLT SUPPLY, OUTPUT TOO LOW
When Monitored: With the ignition on.
Set Condition: The 5-volt supply to the sensors is below 3.5 volts for 4 seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
THROTTLE POSITION SENSOR
MAP SENSOR
A/C PRESSURE SENSOR
EGR SOLENOID
5 VOLT SUPPLY SHORTED TO GROUND
PCM
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read the DTC's.
Is the Good Trip displayed and equal to zero?All
Ye s®Go To 2
No®Go To 9
2 Turn the ignition off.
Disconnect the Throttle Position Sensor harness connector.
Turn the ignition on.
Measure the 5 Volt Supply circuit at the Throttle Position Sensor harness connector.
Is the Voltage below 4.5 Volts?All
Ye s®Go To 3
No®Go To 8
218
DRIVEABILITY - GAS

TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the Throttle Position Sensor harness connector.
Turn the ignition on.
Connect a Voltmeter to the 5 Volt Supply circuit at the Throttle Position Sensor
harness connector.
Monitor the voltage display.
Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Turn the ignition on.
Did the 5 Volt Supply go from below 4.5 volts to above 4.5 volts when MAP Sensor was
disconnected?All
Ye s®Replace the MAP Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 4
4 Turn the ignition off.
Disconnect the Throttle Position Sensor harness connector.
Turn the ignition on.
Connect a Voltmeter to the 5 Volt Supply circuit at the Throttle Position Sensor
harness connector.
Monitor the voltage display.
Turn the ignition off.
Disconnect the A/C Pressure Sensor harness connector.
Turn the ignition on.
Did the 5 Volt Supply go from below 4.5 volts to above 4.5 volts when the sensor was
disconnected?All
Ye s®Replace the A/C Pressure Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 5
5 Turn the ignition off.
Disconnect the Throttle Position Sensor harness connector.
Turn the ignition on.
Connect a Voltmeter to the 5 Volt Supply circuit at the Throttle Position Sensor
harness connector.
Monitor the voltage display.
Turn the ignition off.
Disconnect the EGR Solenoid harness connector.
Turn the ignition on.
Did the 5 Volt Supply go from below 4.5 volts to above 4.5 volts when the EGR was
disconnected?All
Ye s®Replace the EGR Solenoid.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 6
219
DRIVEABILITY - GAS
P1496-5 VOLT SUPPLY, OUTPUT TOO LOW ÐContinued

TEST ACTION APPLICABILITY
6 Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the Throttle Position Sensor harness connector.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connectors.
Disconnect the A/C Pressure Sensor harness connector.
Disconnect the EGR Solenoid harness connector.
Measure the resistance of the 5 Volt Supply circuit in the Throttle Position Sensor
harness connector to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the 5 Volt Supply Circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 7
7 If there are no possible causes remaining, view repair. All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
8NOTE: The Throttle Position Sensor harness connector must be connected
during this test.
Disconnect the MAP Sensor harness connector.
Turn the ignition on.
Measure the 5 Volt Supply circuit in the MAP Sensor harness connector.
Is the Voltage below 4.5 Volts?All
Ye s®Replace the Throttle Position Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 9
9WARNING: 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 DRB Freeze Frame information. 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 POWERTRAIN VERIFICATION TEST VER - 5.
No®Test Complete.
220
DRIVEABILITY - GAS
P1496-5 VOLT SUPPLY, OUTPUT TOO LOW ÐContinued