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TRANSMISSION - NGC
P0740-TORQUE CONVERTER CLUTCH CONTROL CIRCUIT —
TEST
2
With the DRBIII , read Transmission DTC's
Are the DTC's P0750 and/or P0841 present also?
Yes → Refer to the Transmission category and perform the appropriate
No
3
Ignition on, engine not running.
With the DRBIII , record and erase DTC's.
Drive the vehicle until it is fully warmed up. At least 110 degrees.
Perform the following step 3 times.
Drive the vehicle at 50 MPH and allow 4th gear to engage for at least 10 seconds.
Close the throttle, then tip back in until the throttle angle is between 25 and 29
degrees. Note that if you go over 30 degrees, you must back off of the throttle and
retry.
Did the TCC engage during any of the attempts?
Yes → Go To 4
No
4
The conditions necessary to set the 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 and connectors while checking for shorted and open circuits.
This DTC can also be set under extreme temperature conditions, this is usually
caused by an internal problem. Verify if the problem is only experienced under
extreme hot or cold conditions.
With the DRBIII , check the EATX EVENT DATA to help identify the conditions in
which the DTC was set.
Were there any problems found?
Yes → Repair as necessary.
No
5
If there are no possible causes remaining, view repair.
Repair
ACTION
symptom.
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
→ Go To 3
→ Go To 5
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
→ Test Complete.
Perform the Hydraulic Pressure test per the Service Information
and repair the internal transmission components and Torque
convertor as necessary.
Perform 41TE (NGC) TRANSMISSION VERIFICATION TEST -
VER 1.
222
Continued
APPLICABILITY
All
All
All
All
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