Control Module: Testing and Inspection
Control module adaptation
Checking the software
Note! To carry out adaptation, the transmission control module (TCM) must be programmed with specific software.
- Ignition on
- Read off the control module diagnostic number.
Check the read out diagnostic number. If the control module has diagnostic number 30899031 (regardless of version letter), the software does not support this service. Cancel this procedure.
For control modules with different software, select Continue.
Continue - Conditions for transmission adaptation
-------------------------------------------------
Conditions for transmission adaptation
Note!
- The oil level in the transmission must be checked first to ensure that the software in the transmission control module (TCM) can be adapted correctly. Adjust if necessary. The transmission fluid must also be at operating temperature (65 -110 °C)
- Winter W mode must not be active during the adaptation
- After activating the "Adaptation mode" and the correct transmission fluid temperature is reached, the adaptation can be started
- Unless otherwise indicated, the gear selector must be in position D during adaptation. The control module cannot be adapted in the " Man" (Geartronic) position.
Other information
- To check and adjust the transmission fluid level, see Checking and adjusting the oil, AW55-50/51SN Checking Oil Level.
Continue - Activating the adaptation mode
-------------------------------------------------
Activating the adaptation mode
Hint: The following method is for a basic adaptation of the transmission.
For more sporty driving styles, the basic adaptation may not give an improved shifting quality. The method can be adapted to cover those engine speed ranges where there are problems with the shift quality. Ensure however that the orange/yellow warning lamp lights in exactly the same way as during basic adaptation.
Note! Always start by making a basic adaptation.
- Connect the VIDA station
- Start the engine
- Gear selector in position P
- Activate Adaptation mode.
Note! Do not switch off the engine.
- Disconnect the VIDA station. Test drive the car as described below.
The test drive cannot begin until the transmission has reached the correct operating temperature.
The transmission warning lamp is used during adaptation as an indicator that a particular target value has been reached. The warning lamp goes out again after 2-4 seconds, depending on the type of adaptation being run.
Note! Unless otherwise indicated, gear position "D" must be used for adaptation.
Test drive description for up-shift adaptation
1. Accelerate gently at an engine speed of 1400 rpm up to 4th gear. Hold the accelerator pedal (AP) in a fixed position throughout the acceleration. Stop the car and repeat the procedure until the warning lamp for the automatic transmission flashes after each shift. A number of accelerations may be required before the correct result is obtained.
Note! 5th gear will not be available at this engine speed
2. Accelerate again, this time up to 5th gear, but increase the engine speed to approximately 1800 rpm. Hold the accelerator pedal (AP) in a fixed position throughout the acceleration. Repeat the procedure until the warning lamp for the automatic transmission flashes after each shift. A number of accelerations may be required to obtain the correct result
3. Accelerate again up to 5 th gear, but now increase the engine speed to approximately 2500 rpm. Hold the accelerator pedal (AP) in a fixed position throughout the acceleration. Repeat the procedure until the warning lamp for the automatic transmission flashes after each shift. A number of accelerations may be required to obtain the correct result.
Note! The transmission control module adapts continuously. Not all shifts will be perfect. For example, the warning lamp for the automatic transmission will not flash after each shift from 1st to 2nd gear. The lamp only needs to flash once at each engine speed/acceleration to indicate that the adaptation has reached its target value.
Test drive description for down-shift adaptation
1. Drive the car at approximately 70 km/h (45mph) in 5th gear. Release the accelerator pedal (AP) and brake gently to stationary
2. Repeat the procedure until the warning lamp for the automatic transmission flashes after each down shift. Note that a number of decelerations may be required before the correct result is obtained. If it is difficult to obtain results, increase or reduce the pressure on the brake pedal.
Description of adaptation of "garage shifting"
1. Let the engine idle and hold the brake pedal pressed down. Then move the gear selector to gear position " N". Wait 5 seconds. Move the gear selector to position " R". Wait a further 5 seconds and then move the gear selector back to " N". The adaptation is complete when the warning lamp for the automatic transmission flashes when the gear selector is in position " R"
2. Let the engine idle and hold the brake pedal pressed down. Then move the gear selector back to position " N". Wait 5 seconds. Move the gear selector to position " D ". Wait a further 5 seconds and then move the gear selector back to " N". The adaptation is complete when the warning lamp for the automatic transmission flashes when the gear selector is in position " D".
Continue - DONE
Numeric Result 0 - Communication fault
Numeric Result 0 - Communication fault
-------------------------------------------------
Communication fault
Communication fault
Communication fault
Communication has been interrupted for one of the following reasons:
- The ignition is switched off
- VCT2000 disconnected from the data link connector (DLC)
- VCT2000 disconnected from the VIDA cart
- Communication problems in VIDA application or in car.
- No voltage in the data link connector (DLC).
Check therefore:
- That the control module power supply and ground terminal are fault-free.
- That the fuse for the data link connector (DLC) is intact.
- that the ignition is on
- that the battery voltage (system voltage) is normal (approximately 12 V).
If necessary a battery charger can be connected during the test.
For information about charge currents and the battery, see: Battery, charging Battery, Charging
- that VCT2000 is correctly connected to the VIDA cart and the data link connector (DLC)
- that VCT2000 and the wiring is fault-free.
Other information
- For information about fuse and terminal numbers, see the relevant Wiring Diagram.
Try to establish communication again or exit reading off diagnostic trouble codes (DTCs). Depending on the communication fault, select one of the following options.
1. Try again
2. Fault-trace more comprehensively for the communication problem that has occurred
3. Exit fault-tracing / Read off from the next system.
Which alternative is requested?
------------------------
1 - Checking the software
2 - Checking communication
3 - FAILED
-------------------------------------------------
Checking communication
Checking communication errors car model S40 (-04) / V40
Hint: Test the communication with another corresponding vehicle to decide if the malfunction is in the vehicle or in VIDA/VCT/cable harness. If the communication works on another vehicle, the malfunction is in the vehicle.
Hint: For current information about each circuit and signals, see wiring diagram and signal description for each system.
Diagnostic outlet
- Check the voltage feed to diagnostic outlet #16. The voltage shall match battery voltage.
- Check the cable for power ground and signal ground to diagnostic outlet #4 and #5.
Hint: When VCT2000 is connected to the diagnostic outlet (is supplied with voltage), the indicator diode shall be activated with a green light. Then the indicator diode flashes quickly when communication takes place with a control module. In case of certain internal malfunctions on VCT2000 the indicator diode is activated with a red light!
Communication cables k-line
- Check the communication cables between diagnostic outlet #7 and connected control modules for open circuit, short-circuit to ground and short-circuit to voltage.
Communication cable for cruise control as own system (not integrated)
- Check the communication cable between diagnostic outlet #13 and cruise control for open circuit, short-circuit to ground and short-circuit to voltage according to references above.
Communication cable for engine management system Fenix 5.1 and diesel (not Lucas)
- Check the communication cables between diagnostic outlet #11/#15 and engine control module (ECM) for open circuit, short-circuit to ground and short-circuit to voltage according to references above.
Control modules
- Check that the control module's voltage feed and ground connection are trouble-free.
VCT2000 and cable harness
- Connect VCT2000 to the vehicle so that it is supplied with voltage. Test VCT2000 by selecting the system's self-test and VCT Test in the VIDA main menu. If any malfunction is found according to the test, first replace the cable harness then the VCT2000, if the test still indicates a malfunction.
- If no malfunctions were found after troubleshooting according to above, try with a new cable harness and/or new VCT2000.
VIDA
- If no malfunctions were found after troubleshooting according to above, try performing a complete system reset of VIDA.
Other information
- Checking wiring and terminals Checking Wiring And Terminals
Continue - FAULT FOUND
------------------------
FAULT FOUND - Fault-tracing information
-------------------------------------------------
Fault-tracing information
Fault-tracing information
Fault-tracing information
Fault-tracing communication problems is now finished.
Do you want to try establishing communication again?
Yes - YES
No - NO
------------------------
YES - Checking the software
NO - FAILED
-------------------------------------------------