2001 CHRYSLER VOYAGER battery

TEST ACTION APPLICABILITY
7 Disconnect the negative battery cable.
Measure the resistance between ground and the PCI Bus circuit at the Diagnostic
Junction Port tester that previously measured below 100.0 ohms.
Disconnect the module harness connector(s). Note: If the problem occurred on pins 1,
3, 9 or 12 of the Diagnostic Junction Port tester, observe the ohmmeter while
disconnecting each module connector one at a time.
Is the resistance below 100.0 ohms with the module(s) disconnected?All
Ye s®Repair the PCI Bus circuit that measured below 100.0 ohms for a
short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the module that when disconnected the short to ground
was eliminated.
Perform BODY VERIFICATION TEST - VER 1.
8 Turn the ignition off.
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.
Were any problems found?All
Ye s®Repair wiring harness/connectors as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
42
COMMUNICATION
*PCI BUS COMMUNICATION FAILURE ÐContinued

Symptom:
P0107-MAP SENSOR VOLTAGE TOO LOW
When Monitored and Set Condition:
P0107-MAP SENSOR VOLTAGE TOO LOW
When Monitored: Engine speed between 600 to 3500 RPM. TPS voltage less than 1.2
volts. Battery voltage greater than 10 volts.
Set Condition: The MAP sensor signal voltage is below 0.0392 volt for 1.7 seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
5 VOLT SUPPLY CIRCUIT OPEN
MAP SENSOR INTERNAL FAILURE
MAP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
MAP SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT
PCM 5 VOLT SUPPLY CIRCUIT
PCM MAP SENSOR SIGNAL
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read the MAP Sensor voltage.
Is the voltage below 1.2 volts.All
Ye s®Go To 3
No®Go To 2
2 Start the engine.
With the DRBIIIt, read the MAP Sensor voltage.
Is the voltage below .04 volts.All
Ye s®Go To 3
No®Go To 11
3 Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the 5 Volt Supply circuit in the MAP Sensor harness
connector.
Is the voltage between 4.5 to 5.2 volts?All
Ye s®Go To 4
No®Go To 8
48
DRIVEABILITY - GAS

Symptom:
P0108-MAP SENSOR VOLTAGE TOO HIGH
When Monitored and Set Condition:
P0108-MAP SENSOR VOLTAGE TOO HIGH
When Monitored: Engine speed between 600 to 3500 RPM. TP sensor voltage less than
1.2 volts. Battery voltage greater than 10 volts
Set Condition: The MAP sensor signal voltage is greater than 4.96 volts.
POSSIBLE CAUSES
INTERMITTENT CONDITION
MAP SENSOR SIGNAL CIRCUIT SHORTED TO 5 VOLT SUPPLY CIRCUIT
MAP SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
MAP SENSOR INTERNAL FAILURE
MAP SENSOR SIGNAL CIRCUIT OPEN
SENSOR GROUND CIRCUIT OPEN
PCM
TEST ACTION APPLICABILITY
1 Start the engine.
With the DRBIIIt, read the MAP Sensor voltage.
Is the voltage above 4.6 volts.All
Ye s®Go To 2
No®Go To 8
2 Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the MAP Sensor Signal circuit and the 5 Volt Supply
circuit in the MAP Sensor harness connector.
Is the resistance below 100 ohms?All
Ye s®Repair the MAP Sensor Signal circuit for a short to the 5 Volt
Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 3
51
DRIVEABILITY - GAS

TEST ACTION APPLICABILITY
3 Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the MAP Sensor Signal circuit in the MAP Sensor harness
connector.
Is the voltage above 5.2 volts?All
Ye s®Repair the MAP Sensor Signal circuit for a short to battery
voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 4
4 Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Connect a jumper wire between the MAP Sensor Signal circuit and the Sensor
ground circuit.
With the DRBIIIt, monitor the MAP Sensor voltage.
Turn the ignition on.
Is the voltage below 1.0 volts?All
Ye s®Replace the MAP Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 5
5 Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the MAP Sensor Signal circuit between the MAP Sensor
harness connector and the PCM harness connector.
Is the resistance below 5 ohms?All
Ye s®Go To 6
No®Repair the MAP Sensor Signal circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
6 Turn the ignition off.
Disconnect the MAP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the Sensor ground circuit between the MAP Sensor
harness connector and the PCM harness connector.
Is the resistance below 5.0 ohms?All
Ye s®Go To 7
No®Repair the Sensor ground 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.
52
DRIVEABILITY - GAS
P0108-MAP SENSOR VOLTAGE TOO HIGH ÐContinued

Symptom:
P0117-ECT SENSOR VOLTAGE TOO LOW
When Monitored and Set Condition:
P0117-ECT SENSOR VOLTAGE TOO LOW
When Monitored: With the ignition on. Battery voltage greater than 10 volts.
Set Condition: The Engine Coolant Temperature (ECT) sensor circuit voltage at the PCM
is less than 0.8 volt for more than 2.6 seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
ECT SENSOR INTERNAL FAILURE
ECT SENSOR SIGNAL SHORTED TO GROUND
ECT SENSOR SIGNAL SHORTED TO SENSOR GROUND CIRCUIT
PCM
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read the ECT voltage.
Is the voltage below 1.0 volt?All
Ye s®Go To 2
No®Go To 6
2 Turn the ignition off.
Disconnect the ECT harness connector.
Turn the ignition on.
With the DRBIIIt, read ECT voltage.
Is the voltage above 1.0 volt?All
Ye s®Replace the ECT Sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 3
3 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance of the ECT Sensor Signal circuit in the ECT Sensor harness
connector to ground.
Is the resistance below 100 ohms?All
Ye s®Repair the ECT Sensor Signal circuit for a short to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 4
54
DRIVEABILITY - GAS

Symptom:
P0118-ECT SENSOR VOLTAGE TOO HIGH
When Monitored and Set Condition:
P0118-ECT SENSOR VOLTAGE TOO HIGH
When Monitored: With the ignition on. Battery voltage greater than 10 volts.
Set Condition: The Engine Coolant Temperature (ECT) sensor circuit voltage at the PCM
is greater than 4.96 volts for more than 2.6 seconds.
POSSIBLE CAUSES
INTERMITTENT CONDITION
ECT SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
ECT SENSOR INTERNAL FAILURE
ECT SENSOR SIGNAL CIRCUIT OPEN
SENSOR GROUND CIRCUIT OPEN
PCM
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read the ECT voltage.
Is the voltage above 4.6 volts?All
Ye s®Go To 2
No®Go To 7
2 Turn the ignition off.
Disconnect the ECT Sensor harness connector.
Turn the ignition on.
Measure the voltage of the ECT Sensor Signal circuit in the ECT Sensor harness
connector.
Is the voltage above 5.2 volts?All
Ye s®Repair the ECT Sensor Signal circuit for a short to battery
voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 3
56
DRIVEABILITY - GAS

Symptom:
P0122-THROTTLE POSITION SENSOR VOLTAGE LOW
When Monitored and Set Condition:
P0122-THROTTLE POSITION SENSOR VOLTAGE LOW
When Monitored: With the ignition on. Battery voltage greater than 10 volts.
Set Condition: Throttle Position Sensor voltage at the PCM is less than 0.2 volt for 0.7
seconds.
POSSIBLE CAUSES
THROTTLE POSITION SENSOR SWEEP
INTERMITTENT CONDITION
5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND
5 VOLT SUPPLY CIRCUIT OPEN
TP SENSOR INTERNAL FAILURE
TP SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
TP SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR GROUND CIRCUIT
TCM INTERNALLY SHORTED TP SIGNAL CIRCUIT
PCM 5 VOLT SUPPLY CIRCUIT
PCM TP SENSOR SIGNAL
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read the Throttle Position Sensor voltage.
Is the voltage below 0.2 volts?All
Ye s®Go To 2
No®Go To 11
2 Turn the ignition off.
Disconnect the TP Sensor harness connector.
Turn the ignition on.
Measure the voltage of the 5 Volt Supply circuit in the TP Sensor harness connector.
Is the voltage between 4.5 to 5.2 volts?All
Ye s®Go To 3
No®Go To 8
64
DRIVEABILITY - GAS

Symptom:
P0123-THROTTLE POSITION SENSOR VOLTAGE HIGH
When Monitored and Set Condition:
P0123-THROTTLE POSITION SENSOR VOLTAGE HIGH
When Monitored: With the ignition on. Battery voltage greater than 10 volts.
Set Condition: Throttle Position Sensor voltage at the PCM is greater than 4.5 volts for
0.7 seconds.
POSSIBLE CAUSES
THROTTLE POSITION SENSOR SWEEP
INTERMITTENT CONDITION
TP SENSOR SIGNAL CIRCUIT SHORTED TO 5 VOLT SUPPLY CIRCUIT
TP SENSOR SIGNAL CIRCUIT SHORTED TO BATTERY VOLTAGE
TP SENSOR INTERNAL FAILURE
SENSOR GROUND CIRCUIT OPEN
TP SENSOR SIGNAL CIRCUIT OPEN
PCM
TEST ACTION APPLICABILITY
1NOTE: Ensure the throttle is fully closed and free from binding or carbon
build up.
Start the engine.
With the DRBIIIt, read the TP Sensor voltage.
Is the voltage above 4.5 volts.All
Ye s®Go To 2
No®Go To 8
2 Turn the ignition off.
Disconnect the TP Sensor harness connector.
Disconnect the PCM harness connector.
Measure the resistance between the TP Sensor Signal circuit and the 5 Volt Supply
circuit in the TP Sensor harness connector.
Is the resistance below 100 ohms?All
Ye s®Repair the Throttle Position Sensor Signal circuit for a short to
the 5 Volt Supply circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No®Go To 3
68
DRIVEABILITY - GAS