Chrysler Voyager. Manual — part 470

Symptom:

P0884-POWER UP AT SPEED

When Monitored and Set Condition:

P0884-POWER UP AT SPEED

When Monitored:

When Transmission Control Module powers up.

Set Condition:

This DTC will set if the TCM powers up and senses the vehicle in a valid

forward gear (no PRNDL DTCs) with a output speed above 800 RPM (approximately
32Km/h or 20 MPH).

POSSIBLE CAUSES

POWER UP AT SPEED

TEST

ACTION

APPLICABILITY

1

This DTC is set when the TCM is initialized while the vehicle is moving down the
road in a valid forward gear.
Check all of the Fused B+, Fused Ignition Switch Output, and Ground circuits to the
TCM for an intermittent open or short to ground.
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 wiring and/or connectors as necessary.

Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

No

→ Go To 2

2

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

Test Complete.

107

TRANSMISSION - EATX

Symptom:

P0888-RELAY OUTPUT ALWAYS OFF

When Monitored and Set Condition:

P0888-RELAY OUTPUT ALWAYS OFF

When Monitored:

Continuously

Set Condition:

This code is set when less than 3 volts are present at the transmission

control relay output circuits at the Transmission Control Module when the TCM is
energizing the relay.

POSSIBLE CAUSES

FUSED B+ CIRCUIT OPEN

TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT OPEN

TRANSMISSION CONTROL RELAY CONTROL CIRCUIT OPEN

TRANSMISSION CONTROL RELAY GROUND CIRCUIT OPEN

TRANSMISSION CONTROL RELAY CONTROL CIRCUIT SHORT TO GROUND

TRANSMISSION CONTROL RELAY OUTPUT CIRCUIT SHORT TO GROUND

TRANSMISSION CONTROL RELAY STUCK OPEN

TRANSMISSION CONTROL MODULE

INTERMITTENT WIRING AND CONNECTORS

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

108

TRANSMISSION - EATX

TEST

ACTION

APPLICABILITY

2

With the DRBIII

t, Check the STARTS SINCE SET counter for P0888.

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 11

3

Turn the ignition off to the lock position.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, check the Fused B+ circuit in the
Transmission Control Relay connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?

All

Yes

→ Go To 4

No

→ Repair the Fused B+ circuit for an open or high resistance. If the

fuse is open make sure to check for a short to ground.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

4

Turn the ignition off to the lock position.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Using a 12-volt test light connected to 12-volts, check the Transmission Control Relay
Ground circuit.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly?

All

Yes

→ Go To 5

No

→ Repair the Transmission Control Relay Ground circuit for an open

or high resistance.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

5

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

All

Yes

→ Repair the Transmission Control Relay Control circuit for an

open.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

No

→ Go To 6

109

TRANSMISSION - EATX

P0888-RELAY OUTPUT ALWAYS OFF —

Continued

TEST

ACTION

APPLICABILITY

6

Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the Transmission Control Relay Control
circuit.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the Transmission Control Relay Control circuit for a short

to ground.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

No

→ Go To 7

7

Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Transmission Solenoid/Pressure Switch Assembly 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.
Ignition on, engine not running.
Using a 12-volt test light connected to ground, check the three Transmission Control
Relay Output circuits.
NOTE: There are three Transmission Relay Output circuits. Two are located
in the TCM harness connector and one located in the Transmission
Solenoid/Pressure Switch Assembly harness connector
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Does the test light illuminate brightly on all three Transmission Control Relay
Output circuits?

All

Yes

→ Go To 8

No

→ Repair the Transmission Control Relay Output circuit for an open

or high resistance.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

8

Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Transmission Solenoid/Pressure Switch Assembly harness connector.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the Transmission Control Relay Output
circuit.
Is the resistance below 5.0 ohms?

All

Yes

→ Repair the Transmission Control Relay Output circuit for a short

to ground.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.

No

→ Go To 9

110

TRANSMISSION - EATX

P0888-RELAY OUTPUT ALWAYS OFF —

Continued