Jeep XJ. Manual — part 900
Symptom:
*POOR SHIFT QUALITY
POSSIBLE CAUSES
*POOR SHIFT QUALITY
Repair Instructions:
*POOR SHIFT QUALITY
Check the Transmission fluid level per the service information, check for TSB’s, and check
TCM Flash Version Level for latest release. Note: These are just some of the possible issues
of poor shift quality that are sometimes overlooked.
Perform AW4 TRANS VERIFICATION TEST-VER1.
69
TRANSMISSION
Verification Tests
AW4 TRANS VERIFICATION TEST-VER1
APPLICABILITY
1. Connect the DRBIII
t to the Data Link Connector (DLC).
2. Reconnect any disconnected components.
3. With the DRBIII
t, erase all Transmission DTC’s, also erase the PCM DTC’s.
4. Check the transmission fluid and adjust if necessary. Refer to the Service Information for the
Fluid Fill procedure.
5. Road test the vehicle. With the DRBIII
t, monitor the engine RPM. Make 15 to 20 1-2, 2-3,
3-4 upshifts. Perform these shifts from a standing start to 45 MPH with a constant throttle
opening of 20 to 25 degrees.
6. Below 25 MPH, make 5 to 8 wide open throttle kickdowns to 1st gear. Allow at least 5 seconds
each in 2nd and 3rd gear between each kickdown.
7. Attempt to reset the specific DTC, drive the vehicle to the When Monitored/When Set
conditions for the DTC to verify the DTC is repaired..
8. Check for Diagnostic Trouble Codes (DTC’s) during the road test. If a DTC sets during the
road test , return to the Symptom list and perform the diagnostics.
9. NOTE: Erase P0700 DTC in the PCM after making transmission repairs. This will
turn the MIL off.
Were any DTC’s set during the road test?
All
Yes refer to the symptom list
Repair is not complete, refer to appropriate symptom.
No Test Complete
Repair is complete.
70
VERIFICATION TESTS
8.0
COMPONENT LOCATIONS
8.1
BRAKE SWITCH
8.2
DATA LINK
8.3
INPUT AND OUTPUT SPEED SENSORS
C
O
M
P
O
N
E
N
T
L
O
C
A
T
I
O
N
S
71
COMPONENT LOCATIONS
8.4
POWERTRAIN CONTROL MODULE
8.5
THROTTLE POSITION SENSOR
8.6
TRANSMISSION CONTROL MODULE
C
O
M
P
O
N
E
N
T
L
O
C
A
T
I
O
N
S
72
COMPONENT LOCATIONS
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