Chrysler Voyager. Manual — part 457

TEST

ACTION

APPLICABILITY

7

Turn ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the TRS harness connector.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Connect a jumper wire between the Fused B+ circuit and Transmission Control Relay
Output circuit in the Transmission Control Relay connector.
Ignition on, engine not running.
Measure the voltage of the Output Speed Sensor Signal circuit.
Is the voltage above 0.5 volts?

All

Yes

→ Repair Output Speed Sensor Signal circuit short to voltage.

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 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

Yes

→ Repair the Speed Sensor Ground circuit for an open.

Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

No

→ Go To 9

9

Turn ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the TRS harness connector.
Remove the Transmission Control Relay.
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 Speed Sensor Ground circuit.
Is the voltage above 0.5 volts?

All

Yes

→ Repair the Speed Sensor Ground circuit for a short to voltage.

Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

No

→ Go To 10

10

Using the schematics as a guide, inspect the wiring and connectors. Repair as
necessary. Pay particular attention to all power and ground circuits.
If there are no possible causes remaining, view repair.

All

Repair

Replace the Transmission Control Module per the Service Infor-
mation. WITH THE DRBIII

t PERFORM QUICK LEARN AND

REPROGRAM PINION FACTOR.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

55

TRANSMISSION - EATX

P0720-OUTPUT SPEED SENSOR ERROR —

Continued

TEST

ACTION

APPLICABILITY

11

The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this
circuit.
Wiggle the wiring while checking for shorted and open circuits.
With the DRBIII

t, check the EATX EVENT DATA to help identify the conditions in

which the DTC was set.
Were there any problems found?

All

Yes

→ Repair as necessary.

Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

No

→ Test Complete.

56

TRANSMISSION - EATX

P0720-OUTPUT SPEED SENSOR ERROR —

Continued

Symptom:

P0725-ENGINE SPEED SENSOR CIRCUIT

When Monitored and Set Condition:

P0725-ENGINE SPEED SENSOR CIRCUIT

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

EATX RPM SIGNAL CIRCUIT OPEN

EATX RPM SIGNAL CIRCUIT SHORT TO GROUND

EATX RPM SIGNAL CIRCUIT SHORT TO VOLTAGE

TRANSMISSION CONTROL MODULE

INTERMITTENT WIRING AND CONNECTORS

POWERTRAIN CONTROL MODULE

TEST

ACTION

APPLICABILITY

1

NOTE: 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 DRBIII

t, read the engine DTC’s. Check and repair all engine DTC’s prior

to performing Transmission Symptom Diagnostics.
With the DRBIII

t, 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 P0706 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

57

TRANSMISSION - EATX

TEST

ACTION

APPLICABILITY

2

NOTE: This code is not a Transmission Input Speed Sensor DTC
With the DRBIII

t, 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

Yes

→ Go To 3

No

→ Go To 8

3

Turn ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the TCM harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the EATX RPM Signal circuit between the TCM harness
connector and the PCM harness connector.
Is the resistance above 5.0 ohms?

All

Yes

→ Repair the EATX RPM Signal circuit for an open.

Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

No

→ Go To 4

4

Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Disconnect the TCM harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground the EATX RPM Signal circuit.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the EATX RPM Signal circuit for a short to ground.

Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

No

→ Go To 5

5

Turn ignition off to the lock position.
Disconnect the PCM harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Measure the voltage of the EATX RPM Signal circuit.
Is the voltage above 10.0 volts?

All

Yes

→ Repair the EATX RPM Signal circuit for a short to voltage.

Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

No

→ Go To 6

6

Turn the ignition off to the lock position.
Disconnect the PCM harness connector.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Measure the voltage of the EATX RPM Signal circuit
Is the voltage between 4.5 and 5.5 volts?

All

Yes

→ Replace and program the Powertrain Control Module per the

Service Information.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

No

→ Go To 7

58

TRANSMISSION - EATX

P0725-ENGINE SPEED SENSOR CIRCUIT —

Continued