Fault-Tracing Information
Fault-tracing
Checking the diagnostic trouble codes (DTCs)
Any other diagnostic trouble codes for the transmission control module (TCM) must be remedied first because one of them may have caused diagnostic trouble code TCM-089500 or TCM-P089600 to be stored.
Are other diagnostic trouble codes stored?
Yes - DONE
No - Checking the gear system
-------------------------------------------------
Checking for contact resistance and oxidation
- Ignition off.
- Check the connectors of the transmission and the connector for the transmission control module (TCM). Check for contact resistance and oxidation.
- Reconnect the connectors, reinstall components etc.
- Calibrate the gear shift position sensor for the transmission.
Hint: Select Diagnostics/car communication.
- Test drive the vehicle following: Test drive schedule, description, B6304T4, TF-80SC AWD, B6324S5, TF-80SC AWD, B6324S5, TF-80SC, B6324S4, TF-80SC, B6324S4, TF-80SC AWD Test Drive Schedule, Description
Check for any clearly audible noises from the transmission. Check for malfunctions.
Other information
- To access transmission connectors, see: Transmission Control Module (TCM) Transmission Control Module (TCM)
Is the function of the transmission OK?
Yes - FAULT FOUND
No - Replacing the control system
-------------------------------------------------
Replacing the control system
Troubleshooting indicates an internal fault in the transmission.
Other information
Continue - Resetting the adaptation and oil quality counter
-------------------------------------------------
Resetting the adaptation and oil quality counter
Resetting adaptation
Resetting the adaptation and the counter for "Transmission oil, replace"
Hint: The transmission has torque-regulated, adaptive pressure regulation. The pressure regulator enables the transmission to regulate pressure during each shift to prevent hard shifting. Each shift is assessed by the transmission control module (TCM) and is stored in the internal memory. This makes it possible to compensate for transmission and clutch wear. It is important that the adaptation in the memory is reset so that the transmission works normally after the repair. Because the fluid was changed during the repair, the counter for transmission fluid change must also be reset. If the counter is not reset during draining/replacement, a diagnostic trouble code may be generated under the wrong conditions.
Note! This applies only if the transmission or one of the components in the transmission have been replaced.
- Ignition on.
Click on the VCT2000 symbol to reset the adaptation and counter.
Continue - DONE
------------------------
DONE - Verification
-------------------------------------------------
Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reinstall the connectors, components etc.
- The gear shift position sensor for the transmission must be calibrated if the control module has been disconnected.
Hint: Select Diagnostics/car communication.
- Start the engine.
Test drive the vehicle following: Test drive schedule, description, B6304T4, TF-80SC AWD, B6324S5, TF-80SC AWD, B6324S5, TF-80SC, B6324S4, TF-80SC, B6324S4, TF-80SC AWD Test Drive Schedule, Description
Check that the transmission does not display any obvious function faults.
Note! When test driving, the oil temperature must be above 20 °C.
Is the function OK?
Yes - VERIFIED
No - VERIFICATION FAILED
------------------------
VERIFICATION FAILED - Fault-tracing information
VERIFIED - FAULT FOUND
-------------------------------------------------
Fault-tracing information
Attempt New Test - Checking the diagnostic trouble codes (DTCs)
-------------------------------------------------
Checking the gear system
Fault-tracing information
Checking the gear system
Problems that the customer may experience are hard shifts or slipping shifts. The following test-drive contains several different driving situations that may provoke these symptoms if the transmission is damaged.
Note! It is important that the transmission oil is above 70 °C before the test-drive starts!
Test 1
1. Driving at 100 km/h, 6th gear.
2. Perform a kickdown to 4th gear.
3. Let the transmission automatically shift up to 5th gear.
4. Let up the accelerator pedal and let the transmission shift up to 6th gear.
Test 2
1. Driving at 100 km/h, 6th gear.
2. Slight uphill grade, press accelerator pedal until you obtain shifting 6-5, not kickdown.
Test 3
1. Driving at 80 km/h.
2. Move the gear selector to position M and engage 6th gear.
3. Perform a kickdown and shift 6-5, 5-4, 4-3 at the same time.
4. Then upshift immediately to 6th gear.
Test 4
1. Driving with gear 4.
2. Let up the accelerator pedal so that downshift to 3rd gear takes place.
Test 5
1. Stationary vehicle, engine running, parking brake applied, brake activated with left foot, gear selector in position R.
2. Press down the accelerator pedal (brake still activated).
Note! Let up the accelerator pedal in case of noise or slipping.
Test 6
1. Stationary vehicle, engine running, parking brake applied, brake activated with left foot, gear selector in position D.
2. Press down the accelerator pedal (brake still activated).
Note! Let up the accelerator pedal in case of noise or slipping.
If the symptoms hard shifts or slipping shifts arise during the test-drive, the transmission's control system must be replaced.
Other information
Is the function OK?
Yes - DONE
No - FAULT FOUND
------------------------
DONE - Checking for contact resistance and oxidation
FAULT FOUND - Replacing the control system
-------------------------------------------------