check engine CHRYSLER VOYAGER 2001 Service Manual

TEST ACTION APPLICABILITY
21 Turn the ignition off to the lock position.
Disconnect the TRS harness connector.
Disconnect the TCM harness connector.
Remove the Transmission Control Relay from the IPM.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B+ circuit and the Transmission Control
Relay Output circuit in the Transmission Control Relay connector in the IPM.
Ignition on, engine not running.
Measure the voltage of the TRS T42 Sense circuit at the TCM harness connector.
Is the voltage above 0.5 volt?All
Ye s®Repair the TRS T42 Sense circuit for a short to voltage.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No®Go To 22
22 If there are no possible causes remaining, view repair. All
Repair
Replace the TCM. WITH THE DRBIIItPERFORM QUICK
LEARN AND REPROGRAM PINION FACTOR.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
37
TRANSMISSION
P0705-CHECK SHIFTER SIGNAL ÐContinued

Symptom:
P0715-INPUT SPEED SENSOR ERROR
When Monitored and Set Condition:
P0715-INPUT SPEED SENSOR ERROR
When Monitored: The transmission gear ratio is monitored continuously while the
transmission is in gear.
Set Condition: If there is an excessive change in input RPM in any gear.
POSSIBLE CAUSES
INTERMITTENT WIRING AND CONNECTORS
INPUT SPEED SENSOR SIGNAL CIRCUIT OPEN
SPEED SENSOR GROUND CIRCUIT OPEN
INPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND
INPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
SPEED SENSOR GROUND CIRCUIT SHORT TO VOLTAGE
INPUT SPEED SENSOR ERROR
TCM - INPUT SPEED SENSOR
TEST ACTION APPLICABILITY
1NOTE: Low fluid level can be the cause of many Transmission problems. If
the fluid level is low locate and repair the leak then check and adjust the
fluid level per the Service Information.
NOTE: Always perform diagnostics with a fully charged battery to avoid
false symptoms.
With the DRBIIIt, read the engine DTC's. Check and repair all engine DTC's prior
to performing Transmission Symptom Diagnostics.
With the DRBIIIt, read Transmission DTC's. Record all DTC's and 1 Trip Failures.
NOTE: Diagnose 1 Trip Failures as a fully matured DTC.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Repair as necessary.
Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test
for P0705 Check Shifter Signal.
For Gear Ratio DTC's, check and record all CVI's.
Most DTC's set on start up but some must be set by driving the vehicle such that all
diagnostic monitors have run.
NOTE: Verify flash level of Transmission Control Module. Some problems
are corrected by software upgrades to the Transmission Control Module.
NOTE: Check for applicable TSB's related to the symptom.
Perform this procedure prior to Symptom diagnosis.All
Continue
Go To 2
38
TRANSMISSION

TEST ACTION APPLICABILITY
2 Start the engine in park.
With the DRBIIIt, observe the Input Speed Sensor RPM.
Is the Input Speed Sensor Reading below 400 RPM?All
Ye s®Go To 3
No®Go To 11
3 Turn the ignition off to the lock position.
CAUTION: Remove the Starter Relay from the IPM. This will prevent the
vehicle from being started in gear.
Install Transmission Simulator, Miller tool #8333 and the FWD Adapter Cable kit,
Miller tool #8333-1.
Ignition on, engine not running.
Using the Transmission Simulator, set the rotary knob to the 3000/1250 position.
Turn the9Input/Output9switch to ON.
With the DRBIIIt, observe the Input RPM and Output RPM.
Does the Input speed read 3000 RPM and the Output speed read 1250 RPM +/-50
RPM?All
Ye s®Go To 4
No®Go To 5
NOTE: Disconnect the Transmission Simulator and reconnect all harness
connectors.
4 If there are no possible causes remaining, view repair. All
Repair
Replace the Input Speed Sensor.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
5 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Input Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Input Speed Sensor Signal circuit from the TCM
harness connector to the Input Speed Sensor harness connector.
Is the resistance above 5.0 ohms?All
Ye s®Repair the Input Speed Sensor Signal circuit for an open.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No®Go To 6
6 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Input Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Speed Sensor Ground circuit from the TCM harness
connector to the Input Speed Sensor harness connector.
Is the resistance above 5.0 ohms?All
Ye s®Repair the Speed Sensor Ground circuit for an open.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No®Go To 7
39
TRANSMISSION
P0715-INPUT SPEED SENSOR ERROR ÐContinued

TEST ACTION APPLICABILITY
7 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Input Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the Speed Sensor circuit.
Is the resistance Below 5.0 ohms?All
Ye s®Repair the Input Speed Sensor Signal circuit for a short to
ground.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No®Go To 8
8 Turn the ignition off to the lock position.
Disconnect the Input Speed Sensor harness connector.
Disconnect the TCM harness connector.
Remove the Transmission Control Relay from the IPM.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B+ circuit and the Transmission Control
Relay Output circuit in the Transmission Control Relay connector.
Ignition on, engine not running.
Measure the voltage of the Input Speed Sensor Signal circuit in the TCM harness
connector.
Is the voltage above 0.5 volts?All
Ye s®Repair the Input Speed Sensor Signal circuit for a short to
voltage.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No®Go To 9
9 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the TRS harness connector.
Remove the Transmission Control Relay from the IPM.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B+ circuit and the Transmission Control
Relay Output circuit in the Transmission Control Relay connector in the IPM.
Ignition on, engine not running.
Measure the voltage of the Speed Sensor Ground circuit in the TCM harness
connector.
Is the voltage above 0.5 volts?All
Ye s®Repair the Speed Sensor Ground circuit for a short to voltage.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No®Go To 10
10 If there are no possible causes remaining, view repair. All
Repair
Replace the TCM. WITH THE DRBIIItPERFORM QUICK
LEARN AND REPROGRAM PINION FACTOR.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
40
TRANSMISSION
P0715-INPUT SPEED SENSOR ERROR ÐContinued

Symptom:
P0720-OUTPUT SPEED SENSOR ERROR
When Monitored and Set Condition:
P0720-OUTPUT SPEED SENSOR ERROR
When Monitored: The transmission gear ratio is monitored continuously while the
transmission is in gear.
Set Condition: If there is an excessive change in output RPM in any gear.
POSSIBLE CAUSES
INTERMITTENT WIRING AND CONNECTORS
OUTPUT SPEED SENSOR SIGNAL CIRCUIT OPEN
SPEED SENSOR GROUND CIRCUIT OPEN
OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO GROUND
OUTPUT SPEED SENSOR SIGNAL CIRCUIT SHORT TO VOLTAGE
SPEED SENSOR GROUND CIRCUIT SHORT TO VOLTAGE
OUTPUT SPEED SENSOR ERROR
TCM - OUTPUT SPEED SENSOR
TEST ACTION APPLICABILITY
1NOTE: Low fluid level can be the cause of many Transmission problems. If
the fluid level is low locate and repair the leak then check and adjust the
fluid level per the Service Information.
NOTE: Always perform diagnostics with a fully charged battery to avoid
false symptoms.
With the DRBIIIt, read the engine DTC's. Check and repair all engine DTC's prior
to performing Transmission Symptom Diagnostics.
With the DRBIIIt, read Transmission DTC's. Record all DTC's and 1 Trip Failures.
NOTE: Diagnose 1 Trip Failures as a fully matured DTC.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Repair as necessary.
Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test
for P0705 Check Shifter Signal.
For Gear Ratio DTC's, check and record all CVI's.
Most DTC's set on start up but some must be set by driving the vehicle such that all
diagnostic monitors have run.
NOTE: Verify flash level of Transmission Control Module. Some problems
are corrected by software upgrades to the Transmission Control Module.
NOTE: Check for applicable TSB's related to the symptom.
Perform this procedure prior to Symptom diagnosis.All
Continue
Go To 2
42
TRANSMISSION

TEST ACTION APPLICABILITY
2 Start the engine in park.
Raise the drive wheels off of the ground.
WARNING: PROPERLY SUPPORT THE VEHICLE.
Place transmission in drive, release foot from brake.
WARNING: BE SURE TO KEEP HANDS AND FEET CLEAR OF ROTATING
WHEELS.
Note: The drive wheels must be turning at this point.
With the DRBIIIt, observe the Output RPM
Is the Output RPM below 100?All
Ye s®Go To 3
No®Go To 11
3 Turn the ignition off to the lock position.
CAUTION: Remove the Starter Relay from the IPM. This will prevent the
vehicle from being started in gear.
Install Transmission Simulator, Miller tool #8333 and the FWD Adapter Cable kit,
Miller tool #8333-1.
Ignition on, engine not running.
Using the Transmission Simulator, set the rotary knob to the 3000/1250 position.
Turn the9Input/Output9switch to ON.
With the DRBIIIt, read the Input RPM and Output RPM.
Does the Input RPM read 3000 and the Output RPM read 1250 +/-50 RPM?All
Ye s®Go To 4
No®Go To 5
4 If there are no possible causes remaining, view repair. All
Repair
Replace the Output Speed Sensor.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
5 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Output Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Output Speed Sensor Signal circuit from the TCM
harness connector to the Output Speed Sensor harness connector.
Is the resistance above 5.0 ohms?All
Ye s®Repair the Output Speed Sensor Signal circuit for an open.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No®Go To 6
6 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Output Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Speed Sensor Ground circuit from the TCM harness
connector to the Output Speed Sensor harness connector.
Is the resistance above 5.0 ohms?All
Ye s®Repair the Speed Sensor Ground circuit for an open.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No®Go To 7
43
TRANSMISSION
P0720-OUTPUT SPEED SENSOR ERROR ÐContinued

TEST ACTION APPLICABILITY
7 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Output Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the Output Speed Sensor Signal circuit.
Is the resistance Below 5.0 ohms?All
Ye s®Repair the Output Speed Sensor Signal circuit for a short to
ground.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No®Go To 8
8 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Transmission Solenoid/Pressure Switch harness connector
Remove the Transmission Control Relay from the IPM.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B+ and Transmission Control Relay
Output circuits in the Transmission Control Relay connector in the IPM.
Ignition on, engine not running.
Measure the voltage of the Output Speed Sensor Signal circuit in the TCM harness
connector.
Is the voltage above 0.5 volts?All
Ye s®Repair the Output Speed Sensor Signal circuit for a short to
voltage.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No®Go To 9
9 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the TRS harness connector.
Remove the Transmission Control Relay from the IPM.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B+ and Transmission Control Relay
Output circuits in the Transmission Control Relay connector in the IPM.
Ignition on, engine not running.
Measure the voltage of the Speed Sensor Ground circuit in the TCM harness
connector.
Is the voltage above 0.5 volts?All
Ye s®Repair the Speed Sensor Ground circuit for a short to voltage.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No®Go To 10
10 If there are no possible causes remaining, view repair. All
Repair
Replace the TCM. WITH THE DRBIIItPERFORM QUICK
LEARN AND REPROGRAM PINION FACTOR.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
44
TRANSMISSION
P0720-OUTPUT SPEED SENSOR ERROR ÐContinued

Symptom:
P0725-ENGINE SPEED SENSOR CIRCUIT (3.3L/3.8L)
When Monitored and Set Condition:
P0725-ENGINE SPEED SENSOR CIRCUIT (3.3L/3.8L)
When Monitored: Whenever the engine is running.
Set Condition: Engine RPM less than 390 or greater than 8000 for more than 2 seconds
while the engine is running.
POSSIBLE CAUSES
PCM TPS DTC'S PRESENT
INTERMITTENT WIRING & CONNECTORS
CRANK POSITION SENSOR GROUND CIRCUIT OPEN
CRANK POSITION SENSOR SIGNAL CIRCUIT OPEN
TCM - ENGINE SPEED SENSOR CIRCUIT
TEST ACTION APPLICABILITY
1NOTE: Low fluid level can be the cause of many Transmission problems. If
the fluid level is low locate and repair the leak then check and adjust the
fluid level per the Service Information.
NOTE: Always perform diagnostics with a fully charged battery to avoid
false symptoms.
With the DRBIIIt, read the engine DTC's. Check and repair all engine DTC's prior
to performing Transmission Symptom Diagnostics.
With the DRBIIIt, read Transmission DTC's. Record all DTC's and 1 Trip Failures.
NOTE: Diagnose 1 Trip Failures as a fully matured DTC.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Repair as necessary.
Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test
for P0705 Check Shifter Signal.
For Gear Ratio DTC's, check and record all CVI's.
Most DTC's set on start up but some must be set by driving the vehicle such that all
diagnostic monitors have run.
NOTE: Verify flash level of Transmission Control Module. Some problems
are corrected by software upgrades to the Transmission Control Module.
NOTE: Check for applicable TSB's related to the symptom.
Perform this procedure prior to Symptom diagnosis.All
Continue
Go To 2
2 With the DRBIIIt, read PCM DTCs.
Are there any PCM Throttle Position Sensor DTC's present?All
Ye s®Repair all PCM Throttle Position Sensor DTCs before proceeding.
Refer to the driveability category for the appropriate symptom.
No®Go To 3
46
TRANSMISSION

TEST ACTION APPLICABILITY
3 With the DRBIIIt, Check the STARTS SINCE SET counter.
NOTE: This counter only applies to the last DTC set.
Is the STARTS SINCE SET counter set at 0?All
Ye s®Go To 4
No®Go To 7
4 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Crank Position Sensor harness connector.
Measure the resistance of the Crank Position Sensor Ground circuit between the
TCM harness connector and the CKP harness connector.
Is the resistance above 5.0 ohms?All
Ye s®Repair the Crank Position Sensor Ground circuit for an open.
No®Go To 5
5 Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Crank Position Sensor harness connector.
Measure the resistance of the Crank Position Sensor Signal circuit between the TCM
harness connector and the CKP harness connector.
Is the resistance above 5.0 ohms?All
Ye s®Repair the open Crank Position Sensor Signal circuit.
No®Go To 6
6 If there are no possible causes remaining, view repair. All
Repair
Replace the TCM. WITH THE DRBIIItPERFORM QUICK
LEARN AND REPROGRAM PINION FACTOR.
7 The conditions necessary to set the DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this
circuit.
Check the power and ground circuits of the Transmission Control Module.
Start the engine.
With the DRBIIIt, monitor the Engine RPM.
Wiggle the wire harness between the TCM and CKP.
Were any problems found and/or did the Engine RPM change while wiggling the
harness?All
Ye s®Repair wiring and/or connectors as necessary.
No®Test Complete.
47
TRANSMISSION
P0725-ENGINE SPEED SENSOR CIRCUIT (3.3L/3.8L) ÐContinued

Symptom:
P0725-ENGINE SPEED SENSOR CIRCUIT (3.5L)
When Monitored and Set Condition:
P0725-ENGINE SPEED SENSOR CIRCUIT (3.5L)
When Monitored: Whenever the engine is running.
Set Condition: Engine RPM less than 390 or greater than 8000 for more than 2 seconds
while the engine is running.
POSSIBLE CAUSES
INTERMITTENT WIRING & CONNECTORS CONDITIONS
EATX RPM SIGNAL CIRCUIT OPEN
EATX RPM SIGNAL CIRCUIT SHORTED TO GROUND
EATX RPM SIGNAL CIRCUIT SHORTED TO VOLTAGE
PCM-INTERNAL CONTROLLER
TCM-INTERNAL CONTROLLER
TEST ACTION APPLICABILITY
1NOTE: Low fluid level can be the cause of many Transmission problems. If
the fluid level is low locate and repair the leak then check and adjust the
fluid level per the Service Information.
NOTE: Always perform diagnostics with a fully charged battery to avoid
false symptoms.
With the DRBIIIt, read the engine DTC's. Check and repair all engine DTC's prior
to performing Transmission Symptom Diagnostics.
With the DRBIIIt, read Transmission DTC's. Record all DTC's and 1 Trip Failures.
NOTE: Diagnose 1 Trip Failures as a fully matured DTC.
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
Repair as necessary.
Perform the Shift Lever Position Test. If the test does not pass, refer to Symptom test
for P0705 Check Shifter Signal.
For Gear Ratio DTC's, check and record all CVI's.
Most DTC's set on start up but some must be set by driving the vehicle such that all
diagnostic monitors have run.
NOTE: Verify flash level of Transmission Control Module. Some problems
are corrected by software upgrades to the Transmission Control Module.
NOTE: Check for applicable TSB's related to the symptom.
Perform this procedure prior to Symptom diagnosis.All
Continue
Go To 2
2 With the DRBIIIt, Check the STARTS SINCE SET counter.
NOTE: This counter only applies to the last DTC set.
Is the STARTS SINCE SET counter set at 0?All
Ye s®Go To 3
No®Go To 8
48
TRANSMISSION