Jeep Wrangler TJ. Manual — part 177
Symptom:
*NO SPEEDOMETER OPERATION
POSSIBLE CAUSES
NO SPEEDOMETER OPERATION
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, check the pinion factor setting in the TCM.
Is the pinion factor missing or set incorrectly?
All
Yes
→ One possible cause is the pinion factor is not set or is set
incorrectly in the TCM.
Perform 42RLE TRANSMISSION VERIFICATION TEST - VER
1.
No
→ Test Complete.
433
TRANSMISSION - 42RLE
Symptom:
*TRANSMISSION NOISY WITH NO DTC’S PRESENT
POSSIBLE CAUSES
INCORRECT FLUID LEVEL
INTERNAL TRANSMISSION PROBLEM - NOISY
INTERNAL TRANSMISSION PROBLEM - NOISY WHILE STANDING STILL
TEST
ACTION
APPLICABILITY
1
Check the Transmission Fluid Level per the Service Information.
Is the fluid level OK?
All
Yes
→ Go To 2
No
→ Adjust fluid level and repair cause of incorrect fluid level.
Perform TRANSMISSION NO TROUBLE CODE VERIFICA-
TION TEST.
2
Place vehicle on hoist.
WARNING: BE SURE TO KEEP HANDS AND FEET CLEAR OF ROTATING
WHEELS.
Run vehicle on hoist under conditions necessary to duplicate the noise.
NOTE: It may be necessary to test drive the vehicle to duplicate the noise.
Using Chassis Ears or other suitable listening device, verify the source of the noise.
Is the noise coming from the transmission?
All
Yes
→ Go To 3
No
→ Test Complete.
3
With the shift lever in neutral, raise the engine speed and listen to the noise.
NOTE: THE RADIO MUST BE TURNED OFF. Alternator noise can come
through the speakers and be misinterpreted as Transmission Pump Whine.
This can happen even with the volume turned down.
Does the noise get louder or change pitch while the engine speed is changing?
All
Yes
→ Go To 4
No
→ Go To 5
4
If there are no possible causes remaining, view repair.
All
Repair
Repair internal transmission problem as necessary. Inspect all of
the transmission components for signs of wear. If no problems
found, replace the Transmission oil pump..
Perform TRANSMISSION NO TROUBLE CODE VERIFICA-
TION TEST.
5
If there are no possible causes remaining, view repair.
All
Repair
Repair internal transmission problem as necessary. Inspect all of
the transmission components for signs of wear. Pay particular
attention to bearings, pinion gears, etc. Repair or replace as
necessary.
Perform TRANSMISSION NO TROUBLE CODE VERIFICA-
TION TEST.
434
TRANSMISSION - 42RLE
Symptom:
*TRANSMISSION SHIFTS EARLY WITH NO DTC’S
POSSIBLE CAUSES
BUS PROBLEMS
CHECK FOR INTERMITTENT WIRING & CONNECTORS
COLD TRANSMISSION
TEST
ACTION
APPLICABILITY
1
Using the DRBIII
t, check all other Modules for signs of a PCI bus problem such as
bus related DTC’s and/or communication problems.
Check and diagnose all 1 trip failures as a hard code.
Although it takes two occurences of a missed TRD link message to set the DTC
P1793, one missed message will cause the transmission to short shift until the next
start up. If the vehicle has any indications of a bus problem, the bus must be repaired
first
Do any of the other modules show signs of a bus problem?
All
Yes
→ Repair the PCI bus problem.
Perform 42RLE TRANSMISSION VERIFICATION TEST - VER
1.
No
→ Go To 2
2
NOTE: If the Transmission shifts too early when the Transmission is cold,
this is a normal condition. The software is designed to protect the Trans-
mission from high torque and/or high RPM shifts during cold operation.
Did the problem occur when the Transmission temperature was cold?
All
Yes
→ This is a normal condition.
Perform 42RLE TRANSMISSION VERIFICATION TEST - VER
1.
No
→ Go To 3
3
The conditions necessary to set the DTC are not present at this time. Using the
schematics as a guide, inspect the wiring and connectors. Wiggle the wires while
checking for shorts and open circuits.
Although it takes two occurences of a missed TRD link message to set the DTC
P1793, one missed message will cause the transmission to short shift until the next
start up. If the vehicle has any indications of a bus problem, the bus must be repaired
first
Were any problems found?
All
Yes
→ Repair wiring and/or connector as necessary.
Perform 42RLE TRANSMISSION VERIFICATION TEST - VER
1.
No
→ Test Complete.
435
TRANSMISSION - 42RLE
Symptom:
*TRANSMISSION SIMULATOR 8333 WILL NOT POWER UP
TEST
ACTION
APPLICABILITY
1
NOTE: If the Transmission Simulator Miller tool #8333 will not power up,
this is a symptom of the Transmission Relay being open, such as Limp-in,
and/or this also could be a indication of the Transmission Simulator not
installed correctly on the vehicle.
NOTE: Check the Simulator ground cable connection.
NOTE: Check all Transmission Simulator harness connections.
Repair these symptoms before having the Transmission Simulator Miller Tool #8333
repaired.
All
Continue
Test Complete.
436
TRANSMISSION - 42RLE
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст