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CAN Input Signals
Traction status ABS malfunction ABS status Engine torque status Throttle position Accelerator pedal position Engine torque reduction confirmation Engine speed Engine coolant temperature Cruise status OBDII fault code clear request Throttle malfunction warning RED or AMBER All road wheel speeds Token for network status ECM Token for network status INST Token for network status ABS Diagnostic data in from external device (PDU)
Output Signals
Solenoid valve 1 <-> 2 and 4 <-> 5 shift Solenoid valve 2 <-> 3 shift Solenoid valve 3 <-> 4 shift Solenoid valve converter lock-up clutch Control valve - modulating pressure Control valve - shift pressure
CAN Output Signals
Engine torque reduction request MIL status (whether present DTC should operate MIL) Transmission input speed Transmission output speed Converter slip Kickdown status Gear position (actual) Gear position (selected) Gear selection fault Converter lock-up status Current selected shift map Transmission oil temperature Transmission malfunction Pecus flag (state of current TCM program) Target for next gear position Gear shift torque transfer progress at shift MIL status (response to activate the MIL relevant to a DTC) OBDII fault code clear acknowledgement Transmission DTCs (P codes) Token for network status TCM Diagnostic data out to external device (PDU)
Emergency Running (elect ronic limp-home mode)
The TCM constantly monitors the transmissi on for faults. In the event of a problem the TCM will adopt the limp-home mode, in which the gear currently held remains engaged, until P is selected. The modulati ng and shift pressures will increase to
maximum and converter lock-up will be inhibited.
Following the selection of P , the only ratios available will be 2 (irrespective of forward ratio manual selection) and R .
With the vehicle at rest, the procedure to manually select is as follows:
1. 1. Select P .
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Automatic Transmission/Transaxle - 4.0L SC V8 - AJ26 - Transmission
Fluid Drain and Refill
General Procedures
Special Tool(s)
Dipstick
307-379
1. Disconnect the battery ground lead.
2. Raise the vehicle for access.
3. NOTE: This procedure will not re move residual fluid from the
torque converter.
Drain the transmission fluid.
3. WARNING: TRANSMISSION FLUID MAY CAUSE
SEVERE BURNS, ENSURE THAT ALL SAFETY PROCEDURES
ARE OBSERVED AND THAT THE RECEPTACLE FOR WASTE
HAS SUFFICIENT CAPACITY.
Carefully remove the drain pl ug and discard the sealing
washer.
4. Refit the drain plug and tighten to the specified torque figure.
Use a new sealing washer.
5. Connect the PDU to monitor the fluid temperature.
6. Access the dipstick tube.
1. Break off the dipstick tube plug locking plate.
2. Push the locking pin downward, into the plug.
3. Remove the dipstick tube plug.
Push the locking pin through the tube plug and discard the
pin.
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10. Cycle the gear selector:
From P to D.
From D to R.
From R to P.
11. NOTE: Temperature will ONLY be displayed in D or R.
Check the transmission fluid temperature to select the
appropriate dipstick calibration. 1. MAX and MIN marks at 25°C fluid temperature.
2. MAX and MIN marks at 80°C fluid temperature.
12. Check the transmission fluid level.
Insert the dipstick (special tool 307 - 379) until it stops
(tip contact with the fluid pan).
Remove the dipstick an d check the level.
• NOTE: Only use a lint free cloth to wipe the dipstick.
Repeat this operation.
13. Correct the fluid leve l as required, noting that excess fluid
MUST be removed.
14. STOP the engine and remove the dipstick.
15. Seal the dipstick tube.
1. Seat the tube plug.
2. Engage and fully seat the new locking pin.
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Automatic Transmission/Transaxle - 4.0L SC V8 - AJ26 - Main Control
Valve Body
In-vehicle Repair
Removal
• NOTE: This procedure will not remove re sidual fluid from the torque converter.
1. Disconnect the battery ground lead.
2. Raise the vehicle for access.
3. Remove the RH catalytic converter; refer to Operation
17.50.10.
4. Remove the harness heatshield lower fixing.
Remove the screw heatshield / fluid pan clamp.
5. Remove the harness heatshield.
Pull the heatshield from under the clip.
6. Disconnect the transmission link harness connector.
1. Release the locking lever.
7. Release the (transmission case mounted) female connector.
Remove the (center) retaining bolt.
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Automatic Transmission/Transaxle - 4.0L SC V8 - AJ26 - Transmission
Internal Wiring Harness Electr ical Connector O-Ring Seals
In-vehicle Repair
Removal
1. Disconnect the batt ery ground cable.
2. Open the engine compartment and fit paint protection sheets.
3. Raise the vehicle for access.
4. WARNING: TRANSMISSION FLUID MAY CAUSE SEVERE
BURNS, ENSURE THAT ALL SAFET Y PROCEDURES ARE OBSERVED
AND THAT THE RECEPTACLE FOR WASTE HAS SUFFICIENT
CAPACITY.
Drain the transmission fluid.
Carefully remove the drain pl ug and discard the sealing
washer.
5. Remove the harness heatshield lower fixing.
Remove the screw heatshield / fluid pan clamp.
6. Remove the harness heatshield.
Pull the heatshield from under the clip.
7. Disconnect the transmission link harness connector.
1. Release the locking lever on the guide bush and disconnect the harness connector.
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20. Lower the transmission unit.
21. Detach the gear selector cable from the transmission unit.
1. Remove the selector cable ball pin to selector lever nut.
2. Lower the transmissi on lift for access.
3. Remove the selector cable to transmission casing bolts.
22. Release the transmission ha rness multiplug bracket.
1. Remove the two bolts which secure the bracket to the
transmission case, noting that one bolt also retains
the dipstick tube.
23. Disconnect the fluid cooler upper pipe.
Remove the bolt which secures the pipe to the cylinder
block and remove the bracket.
Remove the 'banjo' bolt.
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29. NOTE: Viewed from the rear of the vehicle.
Remove the two bolts which se cure the starter motor power
cable clip.
30. NOTE: Viewed from the rear of the vehicle.
Remove the ground lead bolt.
31. On the LH side.
32. NOTE: Viewed from the rear of the vehicle.
Remove the bolt which secures the cooler upper pipe clip to the
transmission case.
33. NOTE: Viewed from the rear of the vehicle.
Remove the six remaining bolts from the transmission case to
cylinder block.
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38. Remove the harness link lead.
1. If required, slacken the harness heatshield spring
clamp bolt.
2. Remove the heatshield lower bolt.
3. Release the harness multi- lock lever, disconnect and
remove the harness.
39. If appropriate, fit retainin g straps to the converter /
transmission assembly.