Chrysler Town, Dodge Caravan. Manual — part 1020
TEST
ACTION
APPLICABILITY
2
With the DRBIII
t, check the STARTS SINCE SET counter for P0891.
Note: This counter only applies to the last DTC set.
Is the STARTS SINCE SET counter set to 0?
All
Yes
→ Go To 3
No
→ Go To 7
3
Turn the ignition off to the lock position.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between the Fused B+ circuit and the Transmission Control
Relay Output Circuit in the Transmission Control Relay.
Is the resistance above 5.0 ohms?
All
Yes
→ Go To 4
No
→ Replace the Transmission Control Relay.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
4
Turn the ignition off to the lock position.
Disconnect the TCM harness connector.
Disconnect the Solenoid/Pressure Switch Assembly harness connector.
Remove the Transmission Control Relay.
Note: Check connectors - Clean/repair as necessary.
Ignition on, engine not running.
Measure the voltage of the Transmission Control Relay Output circuit in the
Solenoid/Pressure Switch Assembly harness connector.
Is the voltage above 0.5 volt?
All
Yes
→ Repair the Transmission Control Relay Output circuit for a short
to voltage
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off to the lock position.
Remove the Transmission Control Relay.
Ignition on, engine not running.
Note: Check connectors - Clean/repair as necessary.
Measure the voltage of the Transmission Control Relay Control circuit.
Is the voltage above 0.5 volt?
All
Yes
→ Repair Transmission Relay Control Circuit for a short to voltage.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Go To 6
6
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.
116
TRANSMISSION - EATX
P0891-TRANSMISSION RELAY ALWAYS ON —
Continued
TEST
ACTION
APPLICABILITY
7
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.
117
TRANSMISSION - EATX
P0891-TRANSMISSION RELAY ALWAYS ON —
Continued
Symptom:
P0897-WORN OUT/BURNT TRANSAXLE FLUID
When Monitored and Set Condition:
P0897-WORN OUT/BURNT TRANSAXLE FLUID
When Monitored:
With each transition from full Torque Convertor to partial Torque
Convertor engagement for A/C bump prevention.
Set Condition:
When vehicle shudder is detected during partial engagement (PEMCC).
POSSIBLE CAUSES
WORN OUT/ BURNT TRANSMISSION FLUID
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
118
TRANSMISSION - EATX
TEST
ACTION
APPLICABILITY
2
Turn the ignition off.
Remove the Transmission Oil Pan and Oil Filter per the Service Information.
Install a new Transmission Oil Filter per Service Information.
Reinstall Transmission Oil Pan, and refill with new Transmission Fluid per the
Service Information.
Note: The Transmission Cooler must be flushed before prodceeding.
Start the engine, check and adjust the Transmission Fluid Level per Service
Information.
Allow the engine to idle for 10 minutes, in Park.
Flush the Transmission Oil Cooler per the Service Information.
Turn the ignition off.
Drain and refill the Transmission Fluid.
Flush the Transmission Oil Cooler again.
Start the engine, check and adjust the Transmission Fluid Level per Service
Information.
With the DRBIII
t, perform a Battery Disconnect.
Note: This must be done to re enable EMCC during an A/C Clutch engage-
ment.
The vehicle may exhibit intermittent shudder during the first few hundred miles.
Note: The oil will gradually penetrate the TCC friction material and the
shudder should disappear.
Erase the DTC and return the vehicle to the customer.
Did the Code reset or does the vehicle still shudder after a few thousand miles?
All
Yes
→ Replace the Torque Convertor per the Service Information. Note:
After replacing the Torque Convertor, use the DRBIII to perform
the TCC Break In procedure. This will prevent a possible shudder
condition.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Test Complete.
119
TRANSMISSION - EATX
P0897-WORN OUT/BURNT TRANSAXLE FLUID —
Continued
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