ignition CHRYSLER VOYAGER 2001 Service Manual

Symptom:
P0560-SYSTEM VOLTAGE TOO HIGH
When Monitored and Set Condition:
P0560-SYSTEM VOLTAGE TOO HIGH
When Monitored: With the engine running.
Set Condition: The ECM detects battery voltage is above 17.5 volts.
POSSIBLE CAUSES
INTERMITTENT CONDITION
ECM - TARGET CHARGING VOLTAGE TOO LOW
GENERATOR FIELD DRIVER CIRCUIT SHORTED TO GROUND
GROUND CIRCUIT HIGH RESISTANCE
BATTERY SUPPLY CIRCUIT HIGH RESISTANCE
GENERATOR INTERNALLY SHORTED TO GROUND
ECM - FIELD DRIVER SHORTED TO GROUND
TEST ACTION APPLICABILITY
1NOTE: The battery must be fully charged and the generator belt must be in
good condition and tensioned properly before continuing.
Turn the ignition on.
With the DRB, actuate the Generator Field.
Measure the voltage between ground and the Generator Field Driver circuit by back
probing the Generator Field harness connector with a voltmeter.
Does the voltage cycle from B+ to below 2.0 volts?All
Ye s®Go To 2
No®Go To 6
NOTE: With the DRB, stop the Generator Field actuation.
2 Start the engine.
With the DRB, read the Target Charging voltage.
Is the Target Charging voltage above 13.0 volts?All
Ye s®Go To 3
No®Replace and program the Engine Control Module in accordance
with the Service Information.
Perform CHARGING VERIFICATION - VER-3.
11 7
DRIVEABILITY - DIESEL

TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the ECM harness connectors.
Using a 12-volt test light connected to 12-volts, check all of the ECM Ground circuits.
Does the test light illuminate brightly for each circuit?All
Ye s®Go To 4
No®Repair the Ground circuit(s) for high resistance.
Perform CHARGING VERIFICATION - VER-3.
4 Turn the ignition off.
Disconnect the ECM harness connectors.
Using a 12-volt test light connected to ground, check all of the ECM Battery Supply
circuits.
Does the test light illuminate brightly for each circuit?All
Ye s®Go To 5
No®Repair the Battery Supply circuit(s) for high resistance.
Perform CHARGING VERIFICATION - VER-3.
5WARNING: 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 CHARGING VERIFICATION - VER-3.
No®Test Complete.
6 Turn the ignition off.
Disconnect ECM harness connectors.
Disconnect the Generator Field harness connector.
Measure the resistance between ground and the Generator Field Driver circuit.
Is the resistance above 100k ohms?All
Ye s®Go To 7
No®Repair the Generator Field Driver circuit for a short to ground.
Perform CHARGING VERIFICATION - VER-3.
11 8
DRIVEABILITY - DIESEL
P0560-SYSTEM VOLTAGE TOO HIGH ÐContinued

TEST ACTION APPLICABILITY
7 Turn the ignition off.
Disconnect the Generator Field harness connector.
Measure the resistance between ground and the Generator Field Driver terminal on
the back of the Generator.
Is the resistance above 100k ohms?All
Ye s®Go To 8
No®Repair or replace the Generator as necessary.
Perform CHARGING VERIFICATION - VER-3.
8 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 CHARGING VERIFICATION - VER-3.
11 9
DRIVEABILITY - DIESEL
P0560-SYSTEM VOLTAGE TOO HIGH ÐContinued

TEST ACTION APPLICABILITY
2 Turn the ignition on.
With the DRB, actuate the Generator Field.
Measure the voltage between ground and the Generator Field Driver circuit by back
probing the Generator Field harness connector with a voltmeter.
NOTE: The voltage should cycle from Battery voltage to below 2.0 volts
every 1.4 seconds.
While monitoring the voltmeter, wiggle the generator field harness and connectors
between the generator, ECM and the ECM/PCM Relay (in the PDC).
Was there any interruption of the normal voltage cycling?All
Ye s®Repair the harness as necessary where the wiggling caused the
interruption.
Perform CHARGING VERIFICATION - VER-3.
No®Go To 3
NOTE: With the DRB, stop the Generator Field actuation.
3 Connect the positive lead of a voltmeter to the generator B+ (12V) terminal and the
negative lead to the battery positive (+) post.
WARNING: 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.
Start the engine.
Is the voltage on the voltmeter below 0.4 volt?All
Ye s®Go To 4
No®Repair the Generator Fused B+ circuit for high resistance.
Perform CHARGING VERIFICATION - VER-3.
4 Connect the positive lead of a voltmeter to the generator case (housing) and the
negative lead to the battery negative (-) post.
WARNING: 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.
Start the engine.
Is the voltage on the voltmeter below 0.4 volt?All
Ye s®Go To 5
No®Repair the Generator Ground circuit for high resistance.
Perform CHARGING VERIFICATION - VER-3.
5 Turn the ignition off, then on.
With the DRB, read and record the Battery Voltage.
With a voltmeter, measure and record the voltage between the Battery terminals.
Compare the DRB Battery Voltage reading to the voltmeter reading.
Is the difference between the two readings less than 0.5 volt?All
Ye s®Go To 6
No®Go To 7
121
DRIVEABILITY - DIESEL
P0560-SYSTEM VOLTAGE TOO LOW ÐContinued

TEST ACTION APPLICABILITY
6WARNING: 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 CHARGING VERIFICATION - VER-3.
No®Test Complete.
7 Turn the ignition off.
With a voltmeter, measure and record the voltage between the Battery terminals.
Disconnect the ECM harness connectors.
Turn the ignition on.
Measure the voltage of the Fuel Heater Relay Output circuit in the ECM C1 harness
connector.
Are the voltage measurements within 0.5 volt of each other?All
Ye s®Go To 8
No®Repair the Fuel Heater Relay Output circuit to the Engine
Control Module for high resistance.
Perform CHARGING VERIFICATION - VER-3.
8 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Generator Field harness connector.
Remove the ECM/PCM Relay from the PDC.
Connect a jumper wire between cavity 30 and cavity 87 of the ECM/PCM Relay
connector.
Turn the ignition on.
Measure the voltage of the Generator Field Driver circuit.
Is the voltage below 0.5 volt?All
Ye s®Go To 9
No®Repair the Generator Field Driver circuit for a short to voltage.
Perform CHARGING VERIFICATION - VER-3.
122
DRIVEABILITY - DIESEL
P0560-SYSTEM VOLTAGE TOO LOW ÐContinued

TEST ACTION APPLICABILITY
9 Turn the ignition off.
Disconnect the ECM harness connectors.
Remove the ECM/PCM Relay from the PDC.
Connect a jumper wire between cavity 30 and cavity 87 of the ECM/PCM Relay
connector.
Turn the ignition on.
Measure the voltage of the ECM/PCM Relay Output circuit in ECM harness
connector C1, cavities 4 and 5.
Is the voltage above 10.0 volts?All
Ye s®Go To 10
No®Repair the ECM/PCM Relay Output circuit for an open.
Perform CHARGING VERIFICATION - VER-3.
10 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Generator Field harness connector.
Measure the resistance of the Generator Field Driver circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 11
No®Repair the Generator Field Driver circuit for an open.
Perform CHARGING VERIFICATION - VER-3.
11 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 CHARGING VERIFICATION - VER-3.
123
DRIVEABILITY - DIESEL
P0560-SYSTEM VOLTAGE TOO LOW ÐContinued

Symptom:
P0615-STARTER RELAY CIRCUIT SHORT CIRCUIT
When Monitored and Set Condition:
P0615-STARTER RELAY CIRCUIT SHORT CIRCUIT
When Monitored: With the ignition on.
Set Condition: The ECM detects a short to voltage on the Starter Relay Control circuit.
POSSIBLE CAUSES
INTERMITTENT CONDITION
SUBSTITUTE ECM/PCM RELAY
STARTER RELAY OUTPUT CIRCUIT SHORTED TO VOLTAGE
ENGINE CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, erase ECM DTCs.
Attempt to start the engine several times, 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 2
No®Go To 4
2 Turn the ignition off.
Install a substitute relay in place of the Starter Relay.
Attempt to start the engine several times, 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 3
No®Replace the Starter Relay.
Perform ROAD TEST VERIFICATION - VER-2.
3 Turn the ignition off.
Remove the Starter Relay from the IPM.
Turn the ignition on.
Measure the voltage of the Starter Relay Output circuit.
Is the voltage below 1.0 volt?All
Ye s®Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No®Repair the Starter Relay Output circuit for a short to voltage.
Perform ROAD TEST VERIFICATION - VER-2.
124
DRIVEABILITY - DIESEL

Symptom List:
P0620-GENERATOR FIELD CONTROL MALF BATTERY VOLTAGE
DEVIATION TOO HIGH
P0620-GENERATOR FIELD CONTROL MALF BATTERY VOLTAGE
DEVIATION TOO LOW
P0620-GENERATOR FIELD CONTROL MALF BATTERY VOLTAGE
TOO HIGH
P0620-GENERATOR FIELD CONTROL MALF BATTERY VOLTAGE
TOO LOW
P0620-GENERATOR FIELD CONTROL MALF CHARGING VOLTS
TOO LOW
P0620-GENERATOR FIELD CONTROL MALF OPEN CIRCUIT
P0620-GENERATOR FIELD CONTROL MALF SHORT CIRCUIT
P0620-GENERATOR FIELD CONTROL MALF UNSTABLE CUR-
RENT
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0620-GENERATOR FIELD
CONTROL MALF BATTERY VOLTAGE DEVIATION TOO
HIGH.
When Monitored and Set Condition:
P0620-GENERATOR FIELD CONTROL MALF BATTERY VOLTAGE TOO HIGH
When Monitored: With the engine running.
Set Condition: The ECM senses battery voltage above 16.5 volts.
P0620-GENERATOR FIELD CONTROL MALF CHARGING VOLTS TOO LOW
When Monitored: With the engine running.
Set Condition: The ECM senses battery voltage that is 1 or greater below target voltage.
P0620-GENERATOR FIELD CONTROL MALF OPEN CIRCUIT
When Monitored: With the ignition on.
Set Condition: The ECM detects an open or short to ground on the Generator Field
Control circuit.
126
DRIVEABILITY - DIESEL

P0620-GENERATOR FIELD CONTROL MALF SHORT CIRCUIT
When Monitored: With the ignition on.
Set Condition: The ECM detects a short to voltage on the Generator Field Control circuit.
POSSIBLE CAUSES
INTERMITTENT CONDITION
GENERATOR FIELD
GENERATOR FIELD CONTROL CIRCUIT SHORTED TO VOLTAGE
GENERATOR FIELD CONTROL CIRCUIT SHORTED TO GROUND
GENERATOR FIELD CONTROL CIRCUIT OPEN
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 Generator Field harness connector.
Measure the resistance of the Field Control terminals on the back of the Generator.
Is the resistance between 2 and 6 ohms?All
Ye s®Go To 3
No®Repair or replace the Generator as necessary.
Perform CHARGING VERIFICATION - VER-3.
3 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Generator Field harness connector.
Remove the ECM/PCM Relay from the PDC.
Connect a jumper wire between cavity 1 and cavity 4 of the ECM/PCM Relay
connector.
Turn the ignition on.
Measure the voltage of the Generator Field Control circuit.
Is the voltage below 0.5 volt?All
Ye s®Go To 4
No®Repair the Generator Field Control circuit for a short to voltage.
Perform CHARGING VERIFICATION - VER-3.
127
DRIVEABILITY - DIESEL
P0620-GENERATOR FIELD CONTROL MALF BATTERY VOLTAGE DEVI-
ATION TOO HIGH Ð
Continued

TEST ACTION APPLICABILITY
4 Turn the ignition off.
Disconnect ECM harness connectors.
Disconnect the Generator Field harness connector.
Measure the resistance between ground and the Generator Field Control circuit.
Is the resistance above 100k ohms?All
Ye s®Go To 5
No®Repair the Generator Field Control circuit for a short to ground.
Perform CHARGING VERIFICATION - VER-3.
5 Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Generator Field harness connector.
Measure the resistance of the Generator Field Control circuit.
Is the resistance below 5.0 ohms?All
Ye s®Go To 6
No®Repair the Generator Field Control circuit for an open.
Perform CHARGING VERIFICATION - VER-3.
6 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 CHARGING VERIFICATION - VER-3.
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 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 CHARGING VERIFICATION - VER-3.
No®Test Complete.
128
DRIVEABILITY - DIESEL
P0620-GENERATOR FIELD CONTROL MALF BATTERY VOLTAGE DEVI-
ATION TOO HIGH Ð
Continued