Chrysler Voyager. Manual — part 475
Symptom:
P0992- 2-4/OD HYDRAULIC PRESSURE TEST FAILURE
When Monitored and Set Condition:
P0992- 2-4/OD HYDRAULIC PRESSURE TEST FAILURE
When Monitored:
In any forward gear with engine speed above 1000 RPM shortly after
a shift and every minute thereafter.
Set Condition:
After a shift into a forward gear, with engine speed > 1000 RPM, the TCM
momentarily turns on element pressure to the clutch ckts that don’t have pressure to
identify the correct pressure sw closes. If the pressure sw does not close 2 times the code
sets.
POSSIBLE CAUSES
CONDITION P0992 PRESENT
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
127
TRANSMISSION - EATX
TEST
ACTION
APPLICABILITY
2
NOTE: The vehicle must be driven to set this DTC, the transmission must be
warm or hot with the Engine RPM above 1000 RPM.
This DTC is an indicator of a 2/4 and/or O/D Hydraulic Pressure Switch DTC’s
present. Perform the tests for P0870 and/or P0845 to determine which switch is
failing.
With the DRBIII
t, check the EATX EVENT DATA to help identify the conditions in
which the DTC was set.
If there are no possible causes remaining, view repair.
All
Repair
Refer to the Transmission category and perform the appropriate
symptom for P0870 and/or P0845.
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
128
TRANSMISSION - EATX
P0992- 2-4/OD HYDRAULIC PRESSURE TEST FAILURE —
Continued
Symptom:
P1652-SERIAL COMMUNICATION LINK MALFUNCTION
When Monitored and Set Condition:
P1652-SERIAL COMMUNICATION LINK MALFUNCTION
When Monitored:
Continuously with engine running.
Set Condition:
The DTC sets in approximately 20 seconds if no BUS messages are
received by the TCM.
POSSIBLE CAUSES
NO COMMUNICATION WITH MIC
NO COMMUNICATION WITH PCM
INTERMITTENT WIRING AND CONNECTORS
TRANSMISSION CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, erase TCM DTC’s.
Note: Erase P0700 DTC in the PCM to turn the MIL light off after making
transmission repairs.
Start the engine in park.
Did the DTC reset after the engine was started?
All
Yes
→ Go To 2
No
→ Go To 5
2
Ignition on, engine not running.
With the DRBIII
t, attempt communication with the MIC
Can you communicate with the MIC?
All
Yes
→ Go To 3
No
→ Refer to the Communication category for the related symptom(s).
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
3
Ignition on, engine not running.
With the DRBIII
t, select the following screens in order: 9BODY9 9MIC9 9MONITOR
DISPLAY
9 9PCI BUS ENGINE INFO9.
Does the DRBIII
t, read 9NO RESPONSE9 from any of the listed PCM monitors?
All
Yes
→ Refer to Communication Category for the related symptom(s).
Perform 41TE TRANSMISSION VERIFICATION TEST - VER 1.
No
→ Go To 4
129
TRANSMISSION - EATX
TEST
ACTION
APPLICABILITY
4
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.
5
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.
130
TRANSMISSION - EATX
P1652-SERIAL COMMUNICATION LINK MALFUNCTION —
Continued
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