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Noise and shifting problems

Symptom: Noise and shifting problems.

Noise and shifting problems

Fault symptom

Noise and shifting problems.



Conditions

Various cases of driving with cars equipped with 5-speed automatic transmission.

Action



No. Cause Action WIS MY affected
1 Coolant in automatic transmission fluid a) Always check the condition of the automatic transmission fluid and the coolant b) In some cases diagnostic trouble code P0780-60, P0715-00 or P0720-00 is detected. c) The production solution for oil cooler M04 is Loctite applied onto the threads and improved gasket material at the oil pipe connections. The break point is at the following chassis number: 4D: 41025888 CV: 46008366 d) M05 has a modified oil cooler. The break points are at the following chassis numbers: 4D: 51002378 CV: 56001058 Z19: 51000001 Radiator M03-04, 4D and CV
2 Inertia and hesitancy in down shifting 3-2 at 50-70 km/h Update software in TCM. (Download from IRIS) Downloading the program M04
3 Down shifting for no reason in cold weather and at low speed. Normally a problem with the speed sensor, output shaft. Replace the speed sensor. M03
4 Uneven engine speed while changing gear 2-3 after driving in top gear for a longer period. The fault arises when the car reduces speed to under 20 km/h and then accelerates for changing up to gear position 3. a) Check the transmission fluid level and quality. b) Update software in TCM. (Download from IRIS) c) M04 has a modified valve housing and new software. Modified valve housing kit M02-M03 P/N 5449780 d) Check the transmission fluid if the fault remains. Automatic transmission - Adjustment, replacement - Valve housing or Checking the fluid level M03
5 Delay and hesitation during gear changing in city driving. Clicking noise. Download new software from IRIS. For engine alternative B207E/L: S/W #55556282. B207R: S/W #55556283 Downloading the program M02-04
6 Too many gear changes at low speed This is a concept option for 5-speed automatic transmission. M03-04
7 Hard gear changing when braking to stop a) Compare the gearbox serial number and the software ID number and make sure that they correspond. b) Clear the adaptation values and perform Adaptation, resetting. If the procedures do not help and the customer complaints continue, replace the gearbox. Adaptation, resetting M03
8 Gear selector lever jams in P position. Diagnostic trouble code P0826 is detected Clear the diagnostic trouble code and add SLM with Tech2. New fault diagnosis is available in WIS Service programming M03-04
9 Very hard engagement of D and R a) Read the value for the temperature sensor in a cold car and check whether the value corresponds with the ambient temperature. b) If the value differs too much, check that the temperature signal is working. c) Make sure that the wiring harnesses and connectors are working without open circuit, see link. Transmission fluid temperature sensor (535) M03-04
10 Noise a) Determine under which conditions the noise occurs (gear position, speed, accelerator pedal position, fluid temperature) b) Contact Saab Automobile, Front line for help. Check whether the noise is related to engine speed or vehicle speed by changing gear position. c) Describe the character of the noise, whining sound, rattling, clicking etc. d) Checklist, completed with gearbox replacement. See link M03-04
11 Diagnostic trouble codes for electrical components a) Read out the diagnostic trouble codes, clear them and test drive the car. b) Check the function of the components identified by the diagnostic trouble code by checking whether the diagnostic trouble code is repeated for a non-faulty component. c) Check that the cables and connectors are working satisfactorily. Transmission - Automatic Transmission - Component location M03-04
12 Hard down shifting 3-2 a) Check whether the Vehicle Identification Number and the gearbox number correspond. (In certain M03 cars the M04 gearbox has been installed) b) If the above is in order, check the car with another of the same type. Downloading the program M03
13 Oil leakage a) Clean around the leak and test drive the car. b) If the leak returns, take a photograph of the area and highlight the position on the photograph with a pen. c) Rectify the leak or change transmission if necessary. Automatic transmission assembly M03-04