Chrysler Concorde 2004 Service Manual page 1276

TRANSMISSION - NGC
P0870-OD HYDRAULIC PRESSURE TEST FAILURE —
TEST
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 , read Engine DTC's. Check and repair all Engine DTC's prior to
performing any transmission symptom diagnostics.
With the DRBIII , 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 Powertrain Control Module. Some problems are
corrected by software upgrades to the Transmission and Engine software.
NOTE: Check for applicable TSB's related to the problem.
Perform this procedure prior to Symptom diagnosis.
Continue
2 With the DRBIII , check for other Transmission DTC's.
Is the DTC P0944 present also?
Yes → Refer to the Transmission category and perform the appropriate
→ Go To 3
No
3 With the DRBIII , read Transmission DTC's.
Is the DTC P0733 and/or P0871 present also?
Yes → Replace the Transmission Solenoid/Pressure Switch Assembly per
→ Go To 4
No
4 With the DRBIII , Check the STARTS SINCE SET counter for P0870.
NOTE: This counter only applies to the last DTC set.
Is the STARTS SINCE SET counter 2 or less?
Yes → Go To 5
→ Go To 12
No
ACTION
Go To 2
symptom.
Perform 42LE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
the Service Information.
Perform 42LE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
116
Continued
APPLICABILITY
All
All
All
All