2001 CHRYSLER VOYAGER relay

Symptom:
P0135-1/1 O2 SENSOR HEATER FAILURE
When Monitored and Set Condition:
P0135-1/1 O2 SENSOR HEATER FAILURE
When Monitored: During vehicle shutdown after vehicle had been driven greater than 10
miles with throttle open for a minimum of 3 minutes. Battery voltage greater than 11.0
volts.
Set Condition: O2 sensor voltage continues to rise (instead of fall) after the diagnostics
has turned the ASD relay back on. Two trip fault.
POSSIBLE CAUSES
O2 HEATER ELEMENT
O2 SENSOR HEATER CONTROL CIRCUIT OPEN
O2 SENSOR HEATER CONTROL CIRCUIT SHORTED TO GROUND
ASD RELAY OUTPUT CIRCUIT OPEN
INTERMITTENT CONDITION
PCM
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read DTC's.
Is the Good Trip display and equal to zero?All
Ye s®Go To 3
No®Go To 2
2 Turn the ignition off.
NOTE: Wait a minimum of 8 minutes to allow the O2 Sensor to cool down
before continuing the test. Allow the O2 Sensor voltage to stabilize between
0.4 to 0.6 volts.
Turn the ignition on.
With the DRBIIIt, actuate the O2 Heater Test.
With the DRBIIIt, monitor O2 Sensor voltage for at least 2 minutes.
Does the voltage stay between 0.4 and 0.6All
Ye s®Go To 3
No®Go To 8
85
DRIVEABILITY - GAS

TEST ACTION APPLICABILITY
3NOTE: Allow the O2 sensor to cool down to room temperature.
Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Measure the resistance across the O2 Sensor Heater element component side.
Is the resistance between 2.0 and 7.0 ohms?All
Ye s®Go To 4
No®Replace the O2 Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
4 Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the O2 Sensor Heater Control circuit between the O2
Sensor harness connector and the PCM harness connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 5
No®Repair the O2 Sensor Heater Control circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
5 Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the O2 Sensor Heater Control circuit in the O2 Sensor
harness connector to ground.
Is the resistance below 5.0 ohms?All
Ye s®Repair the O2 Sensor Heater Control circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 6
6 Turn the ignition off.
Disconnect the O2 Sensor harness connector.
With the DRBIIIt, actuate the O2 Heater Test.
Measure the voltage of the ASD Relay Output circuit in the O2 Sensor harness
connector.
Is the voltage above 11.0 volts?All
Ye s®Go To 7
No®Repair the ASD Relay Output circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
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.
86
DRIVEABILITY - GAS
P0135-1/1 O2 SENSOR HEATER FAILURE ÐContinued

Symptom:
P0141-1/2 O2 SENSOR HEATER FAILURE
When Monitored and Set Condition:
P0141-1/2 O2 SENSOR HEATER FAILURE
When Monitored: During vehicle shutdown after the vehicle has been driven for greater
than 10 miles with the throttle open for a minimum of 3 minutes. Battery voltage greater
than 11.0 volts.
Set Condition: O2 sensor continues to rise, (instead of fall) after the diagnostics has
turned the ASD relay back on. Two trip fault.
POSSIBLE CAUSES
O2 HEATER ELEMENT
O2 SENSOR HEATER GROUND CIRCUIT OPEN
ASD RELAY OUTPUT CIRCUIT OPEN
INTERMITTENT CONDITION
PCM
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read DTC's.
Is the Good Trip display and equal to zero?All
Ye s®Go To 3
No®Go To 2
2 Turn the ignition off.
NOTE: Wait a minimum of 8 minutes to allow the O2 Sensor to cool down
before continuing the test. Allow the O2 Sensor voltage to stabilize between
0.4 to 0.6 volts.
Turn the ignition on.
With the DRBIIIt, actuate the O2 Heater Test.
With the DRBIIIt, monitor O2 Sensor voltage for at least 2 minutes.
Does the voltage stay between 0.4 and 0.6 volts?All
Ye s®Go To 3
No®Go To 7
3NOTE: Allow the O2 sensor to cool down to room temperature.
Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Measure the resistance across the O2 Sensor Heater element component side.
Is the resistance between 4.0 and 7.0 ohms?All
Ye s®Go To 4
No®Replace the O2 Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
88
DRIVEABILITY - GAS

TEST ACTION APPLICABILITY
4 Turn the ignition off.
Disconnect the O2 Sensor harness connector.
Measure the resistance of the O2 Sensor Heater ground circuit in the O2 Sensor
harness connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 5
No®Repair the O2 Sensor Heater ground circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
5 Turn the ignition off.
Disconnect the O2 Sensor harness connector.
With the DRBIIIt, actuate the O2 Heater Test.
Measure the voltage of the ASD Relay Output circuit in the O2 Sensor harness
connector.
Is the voltage above 11.0 volts?All
Ye s®Go To 6
No®Repair the ASD Relay Output circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
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 - 5.
7WARNING: 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.
89
DRIVEABILITY - GAS
P0141-1/2 O2 SENSOR HEATER FAILURE ÐContinued

Symptom List:
P0201-INJECTOR #1 CONTROL CIRCUIT
P0202-INJECTOR #2 CONTROL CIRCUIT
P0203-INJECTOR #3 CONTROL CIRCUIT
P0204-INJECTOR #4 CONTROL CIRCUIT
P0205-INJECTOR #5 CONTROL CIRCUIT
P0206-INJECTOR #6 CONTROL CIRCUIT
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0201-INJECTOR #1 CONTROL
CIRCUIT.
When Monitored and Set Condition:
P0201-INJECTOR #1 CONTROL CIRCUIT
When Monitored: With battery voltage greater than 10 volts. Auto Shutdown Relay
energized. Engine speed less than 3000 rpm.
Set Condition: No inductive spike is detected after injector turn off.
P0202-INJECTOR #2 CONTROL CIRCUIT
When Monitored: With battery voltage greater than 10 volts. Auto Shutdown Relay
energized. Engine speed less than 3000 rpm.
Set Condition: No inductive spike is detected after injector turn off.
P0203-INJECTOR #3 CONTROL CIRCUIT
When Monitored: With battery voltage greater than 10 volts. Auto Shutdown Relay
energized. Engine speed less than 3000 rpm.
Set Condition: No inductive is detected after injector turn off.
P0204-INJECTOR #4 CONTROL CIRCUIT
When Monitored: With battery voltage greater than 10 volts. Auto Shutdown Relay
energized. Engine speed less than 3000 rpm.
Set Condition: No inductive spike is detected after injector turn off, and with no other
injectors on.
P0205-INJECTOR #5 CONTROL CIRCUIT
When Monitored: With battery voltage greater than 10 volts. Auto Shutdown Relay
energized. Engine speed less than 3000 rpm.
Set Condition: No inductive spike is detected after injector turn off.
100
DRIVEABILITY - GAS

P0206-INJECTOR #6 CONTROL CIRCUIT
When Monitored: With battery voltage greater than 10 volts. Auto Shutdown Relay
energized. Engine speed less than 3000 rpm.
Set Condition: No inductive spike is detected after injector turn off.
POSSIBLE CAUSES
ASD RELAY OUTPUT CIRCUIT OPEN
INTERMITTENT CONDITION
FUEL INJECTOR
FUEL INJECTOR DRIVER CIRCUIT OPEN
FUEL INJECTOR DRIVER CIRCUIT SHORTED TO GROUND
PCM
TEST ACTION APPLICABILITY
1NOTE: Record the Freeze Frame Information that set along with the DTC.
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 Fuel Injector harness connector.
Measure the resistance of the Fuel Injector component side.
Is the resistance between 10 and 16 ohms?All
Ye s®Go To 3
No®Replace the Fuel Injector.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
3 Turn the ignition off.
Disconnect the Fuel Injector harness connector.
Remove the ASD Relay from the PDC.
Using a 12-volt test light connected to 12-volts, probe the ASD Relay Output circuit.
Does the test light illuminate brightly?All
Ye s®Go To 4
No®Repair the ASD Relay Output circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
101
DRIVEABILITY - GAS
P0201-INJECTOR #1 CONTROL CIRCUIT ÐContinued

Symptom List:
P0351-IGNITION COIL #1 PRIMARY CIRCUIT
P0352-IGNITION COIL #2 PRIMARY CIRCUIT
P0353-IGNITION COIL #3 PRIMARY CIRCUIT
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0351-IGNITION COIL #1 PRI-
MARY CIRCUIT.
When Monitored and Set Condition:
P0351-IGNITION COIL #1 PRIMARY CIRCUIT
When Monitored: With battery voltage greater than 8 volts during engine cranking or
greater than 13 volts with engine running. Engine RPM less than 3000. No coil in dwell
during test.
Set Condition: Peak current is not achieved with battery based dwell plus 1.5 msec of
diagnostic offset. It takes less than 3 seconds during cranking or up to 6 seconds while
running to set.
P0352-IGNITION COIL #2 PRIMARY CIRCUIT
When Monitored: With battery voltage greater than 8 volts during engine cranking or
greater than 13 volts with engine running. Engine RPM less than 3000. No coil in dwell
during test.
Set Condition: Peak current is not achieved with battery based dwell plus 1.5 msec of
diagnostic offset. It takes less than 3 seconds during cranking or up to 6 seconds while
running to set.
P0353-IGNITION COIL #3 PRIMARY CIRCUIT
When Monitored: With battery voltage greater than 8 volts during engine cranking or
greater than 13 volts with engine running. Engine RPM less than 3000. No coil in dwell
during test.
Set Condition: Peak current is not achieved with battery based dwell plus 1.5 msec of
diagnostic offset. It takes less than 3 seconds during cranking or up to 6 seconds while
running to set.
POSSIBLE CAUSES
IGNITION COIL
INTERMITTENT CONDITION
ASD RELAY OUTPUT CIRCUIT
IGNITION COIL DRIVER CIRCUIT OPEN
IGNITION COIL DRIVER CIRCUIT SHORTED TO GROUND
PCM
121
DRIVEABILITY - GAS

TEST ACTION APPLICABILITY
1NOTE: Record the Freeze Frame Information that set along with the DTC.
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 Ignition Coil harness connector.
Turn the ignition on.
With the DRBIIIt, actuate the ASD Relay.
Using a 12 volt test light connected to ground, probe the ASD Relay Output circuit in
the Ignition Coil harness connector.
Does the test light illuminate brightly?All
Ye s®Go To 3
No®Repair the ASD Relay Output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
3 Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Using a 12-volt test light connected to 12-volts, probe the Ignition Coil Driver circuit.
Crank the engine for 5 second while observing the test light.
Does the test light blink/flicker?All
Ye s®Replace the Ignition Coil.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 4
4 Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the Ignition Coil driver circuit between the Ignition Coil
harness connector and the PCM harness connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 5
No®Repair the Ignition Coil driver circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
5 Turn the ignition off.
Disconnect the Ignition Coil harness connector.
Disconnect the PCM harness connector.
Measure the resistance between ground and the Ignition Coil driver circuit in the
Ignition Coil harness connector.
Is the resistance below 100k ohms?All
Ye s®Repair the Ignition Coil driver circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 6
122
DRIVEABILITY - GAS
P0351-IGNITION COIL #1 PRIMARY CIRCUIT ÐContinued