Part 1
Check the start system
Fault-tracing information
- This fault-tracing only applies to vehicles with the symptom Starter motor not running.
- If the starter motor turns but the engine does not start, finish this fault-tracing.
Do you want to continue with this procedure?
Yes - Checking the diagnostic trouble codes (DTCs)
No - No Fault Found
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Checking locked steering wheel lock
Note! If the vehicle is equipped with Keyless vehicle module (KVM) always use the remote key in the ignition switch.
- Remove the key from the ignition switch.
The steering column lock must be locked. It must be impossible to turn the steering wheel.
Is the function OK?
Yes - Checking unlocked steering wheel lock
No - Checking the ignition switch
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Checking the ignition switch
- Click on the VCT2000 symbol.
- Check the status for the switch for key-in.
Hint: If the vehicle is equipped with Keyless vehicle module (KVM) always use the remote key in the ignition switch.
Is the function OK?
Yes - Checking unlocked steering wheel lock
No - Replacing the Start Control Unit (SCU)
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Checking unlocked steering wheel lock
- Insert the key in the ignition switch.
The steering column lock must be unlocked. It must be possible to turn the steering wheel.
Hint: If the vehicle is equipped with Keyless vehicle module (KVM) always use the remote key in the ignition switch.
Is the function OK?
Yes - Checking text message in Driver Information Module (DIM)
No - Checking text message in Driver Information Module (DIM)
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Checking text message in Driver Information Module (DIM)
- Turn the ignition key to position I.
- Scroll between the messages in the Driver Information Module (DIM) by pressing the READ button.
Search for the text message related to the key, the ignition or steering column lock.
Is there a relevant text message?
Yes - Text message in the Driver Information Module (DIM)
No - Checking text message in Driver Information Module (DIM)
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Checking text message in Driver Information Module (DIM)
- Turn the ignition key to position II.
- Scroll between the messages in the Driver Information Module (DIM) by pressing the READ button.
Search for the text message related to the immobilizer.
Is there a relevant text message?
Yes - Checking the diagnostic trouble codes (DTCs)
No - Checking the ignition switch
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Checking the ignition switch
- Click on the VCT2000 symbol.
- Check that the status of the ignition switch corresponds to all key positions.
Compare with table in link below.
Hint: If the vehicle is equipped with Keyless vehicle module (KVM) always use the remote key in the ignition switch.
Other information
- For table, Description of switch for start control unit (SCU) Description of Switch For Start Control Unit (SCU)
Are all key positions OK?
Yes - Checking the starter motor circuit
No - Replacing the Start Control Unit (SCU)
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Checking text message in Driver Information Module (DIM)
- Turn the ignition key to position I.
- Scroll between the messages in the Driver Information Module (DIM) by pressing the READ button.
Search for the text message related to the key, the ignition or steering column lock.
Is there a relevant text message?
Yes - Text message in the Driver Information Module (DIM)
No - Checking the ignition switch
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Text message in the Driver Information Module (DIM)
Hint: By holding in the trip odometer reset button for 10 seconds the text ID for the relevant text message is displayed in the Driver Information Module (DIM).
- Turn the ignition key to position II.
- Depress the trip odometer reset button.
Hold the button depressed until the relevant text ID is displayed in the Driver Information Module (DIM).
- Scroll between the messages in the Driver Information Module (DIM) by pressing the READ button.
Search for the text message related to the key, the ignition or steering column lock.
- Select an alternative below
The relevant text ID:
1. Text ID 162.
2. Text ID 166.
3. Text ID 251.
4. Text ID 252.
5. Text ID 165.
Select the desired alternative above.
1 - Check the diagnostic trouble codes (DTCs) for text ID 162
2 - Check diagnostic trouble codes (DTCs) for text ID 166
3 - Check diagnostic trouble codes (DTCs) for text ID 251
4 - Check load on steering column lock
5 - Check load on steering column lock
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Check the diagnostic trouble codes (DTCs) for text ID 162
Note that this text message is displayed together with:
- Incorrect key
- New key.
- Replace the central electronic module (CEM).
Click on the VCT2000 symbol.
Check if any of the following diagnostic trouble codes have been generated in the vehicle.
Remedy as necessary.
1. CEM-6C41.
2. CEM-6C42.
3. CEM-6C43.
4. CEM-DD11 (A).
Other diagnostic trouble codes that may be stored in the control modules in the vehicle are not relevant for this text message.
Select alternative according to above.
1 - Fault-tracing information
2 - Downloading new software
3 - Downloading new software
4 - Checking the connector
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Check diagnostic trouble codes (DTCs) for text ID 166
Click on the VCT2000 symbol.
Check if any of the following diagnostic trouble codes have been generated in the vehicle.
Remedy as necessary.
- CEM-6C50.
- CEM-6C52.
Other diagnostic trouble codes that may be stored in the control modules in the vehicle are not relevant for this text message.
Continue - DONE
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Check diagnostic trouble codes (DTCs) for text ID 251
Click on the VCT2000 symbol.
Check if any of the following diagnostic trouble codes have been generated in the vehicle.
Remedy as necessary.
1. CEM-6C47. CEM-6C53. CEM-6C56.
2. CEM-6C51.
3. CEM-DD10 (A).
Other diagnostic trouble codes that may be stored in the control modules in the vehicle are not relevant for this text message.
Select alternative according to above.
1 - Replacing the Steering Column Lock Module (SCL)
2 - Downloading new software
3 - Fault-tracing information
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Check load on steering column lock
There are no relevant diagnostic trouble codes (DTCs) for text ID 252 and 165.
This text message means that the steering column lock is under load.
- Remove the key from the ignition switch.
- Turn the steering wheel 90° to the right.
- Insert the key in the ignition switch.
- Check the function of the steering column lock.
Is the function OK?
Yes - Fault-tracing information
No - Replacing the Steering Column Lock Module (SCL)
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Fault-tracing information
The malfunction was caused by the steering column being loaded.
The fault has now been remedied.
Continue - Verification
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Replacing the Steering Column Lock Module (SCL)
Check the cables and connections between the Steering Column Lock Module (SCL) and the Central electronic module (CEM).
If no fault is found on the cables or connections this means that the Steering Column Lock Module (SCL) is defective and must be replaced.
Other information
- Steering lock Service and Repair
- Checking wiring and terminals Checking Wiring and Terminals
Continue - Verification
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Checking the ignition switch
- Click on the VCT2000 symbol.
- Check that the status of the ignition switch corresponds to all key positions.
Compare with table in link below.
Hint: If the vehicle is equipped with Keyless vehicle module (KVM) always use the remote key in the ignition switch.
Other information
- For table,
Description of switch for start control unit (SCU) Description of Switch For Start Control Unit (SCU)
Are all key positions OK?
Yes - Fault-tracing information
No - Checking the wiring
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Checking the wiring
Click on the VCT2000 symbol.
Find out if the diagnostic trouble code (DTC) CEM-1A41 (A) is stored.
If there is a diagnostic trouble code (DTC) this means that the Start Control Unit (SCU) is defective and must be replaced.
Check the cables and connections between the Start Control Unit (SCU) and the Central electronic module (CEM).
Check the fuse for the ignition switch in the engine compartment fusebox.
Remedy as necessary.
Other information
- Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- Signal description Central Electronic Module (CEM) Signal Description, Central Electronic Module (CEM)
- For information about fuses, see the wiring diagram.
- Control module relay box passenger compartment Service and Repair
- Ignition lock Service and Repair
- Checking wiring and terminals Checking Wiring and Terminals
Continue - Verification
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Check the Steering Wheel Module (SWM)
- Ignition off.
- Disconnect the connector for the steering wheel module (SWM).
- Remove the key from the ignition switch.
- Insert the key in the ignition switch.
Turn the ignition key to start position (key position III).
Can the vehicle be started?
Yes - Replacing the Steering Wheel Module (SWM)
No - Checking the diagnostic trouble codes (DTCs)
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Replacing the Start Control Unit (SCU)
Check the cables and connections between the Start Control Unit (SCU) and the Central electronic module (CEM).
Check the fuse for the Start Control Unit (SCU).
If no fault is found on the cables or connections this means that the Start Control Unit (SCU) is defective and must be replaced.
Other information
- Ignition lock Service and Repair
- Checking wiring and terminals Checking Wiring and Terminals
- For further information about the fuses and relays, see the Wiring Diagram.
Continue - Verification
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Other fault-tracing
Other fault-tracing
Conditions
If no fault has been detected, continue with the following fault tracing procedures.
The fault tracing procedures should be performed in numerical order.
If no fault is detected during each fault tracing procedure, proceed to the next one.
Checking the battery and connections
Select alternative 1 to check the battery and connections.
Checking the starter motor relay
Select alternative 2 to check the starter motor relay.
Checking the starter motor
Select alternative 3 to check the starter motor.
Checking the park / neutral position (PNP) function in the gear position sensor (only vehicles with automatic transmission)
Select alternative 4 to check the immobilizer function in the gear position sensor.
Exit fault-tracing
Select alternative 5 to exit fault-tracing.
This alternative must only be selected if fault-tracing is carried out for all other alternatives.
Select an alternative.
1 - Checking the battery and connections
2 - Checking the starter motor relay
3 - Checking the starter motor
4 - Checking the park / neutral position (PNP) function in the gear position sensor (only vehicles with automatic transmission)
5 - Exit fault-tracing
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Checking the battery and connections
Checking the battery and connections
Checking the battery and connections
Note! The test requires that no diagnostic trouble codes are stored for the symptom.
Check the battery cables at the battery, body and starter motor.
If the connections are not adequately tightened the battery cannot deliver sufficiently high current to the starter motor.
Remedy as necessary.
Continue - Checking the battery
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Checking the battery
Troubleshoot and test the battery.
Check that the battery has the correct performance for the model in question.
If performance is not right, try with a new battery.
Note! If the vehicle is equipped with a battery that has another rating than the recommended but is okay, do not replace battery.
Remedy as necessary.
Other information
- Fault-tracing and testing the battery Fault-Tracing and Testing the Battery
Was a fault detected?
Yes - Verification
No - DONE
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Verification
Verification
Hint: After carrying out the repair, check that the fault has been remedied.
- Ignition off.
- Reinstall the connectors, components etc.
- For vehicles with automatic transmission:
The gear selector shall be in position P or N.
- For vehicles with manual transmission:
The gear lever shall be in neutral position.
- Parking brake applied.
- The battery shall be fully charged.
Turn the ignition key to start position (key position III).
The starter motor must run in starting position.
Does the starter motor work?
Yes - VERIFIED
No - DONE
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FAULT FOUND - ???
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Checking the starter motor relay
Checking the starter motor relay
Checking the starter motor relay
Note! The test requires that the battery is trouble-free and that no relevant diagnostic trouble codes are stored for the symptom.
- The signal chain to the starter motor can be checked quickly by short-circuiting the relay connections to the starter motor.
- For vehicles with automatic transmission:
The gear selector shall be in position P or N.
- For vehicles with manual transmission:
The gear lever shall be in neutral position.
- Parking brake applied.
Warning! In case of short-circuiting, the starter motor shall run.Be careful.
Caution! Use two cables with suitable cable terminal when short-circuiting so that the spark does not damage the relay socket.
Ignition off.
Remove the starter motor relay and short-circuit the relay socket #3(30) with #5(87), that is, the relay circuit.
Note! Do not bridge directly in the relay socket.Contacts may be damaged.
If the starter motor runs now then there is no malfunction of the power part in the circuit.
Other information
- For further information about the fuses and relays, see the Wiring Diagram.
Does the starter motor run when the relay is short-circuited?
Yes - Checking relay and start relay control signal
No - Checking the wiring
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Checking relay and start relay control signal
Caution! Avoid touching the pins in the control module and the corresponding connector on the cable harness.There is a risk of static discharge which could damage the control module.Discharge yourself and tools to be used by holding the tool's metal part and touching a body part on the car just before starting to work.
- It is possible to deduce whether the fault is in the wiring or in the relay by connecting a electrician's screwdriver over the relay socket coil.
- For vehicles with automatic transmission:
The gear selector shall be in position P or N.
- For vehicles with manual transmission:
The gear lever shall be in neutral position.
- Parking brake applied.
Connect a test probe between relay connection #1(86) and #2(85) on the relay socket.
Turn the ignition to start position (ignition position III) and observe the light.
If test probe lights up, replace the relay.
If test probe does not light up:
- Check fuses.
- Check the cable between the ignition's 50-feed #B2 and Central Electronic Module (CEM) #A42 for short-circuiting to ground and open circuit.
Check the cable between Central Electronic Module (CEM) #E9 and the relay socket #1(86) for short-circuit to ground and open circuit.
- Check the cable between relay socket #2(85) and Engine Control Module (ECM) for short-circuit to voltage and open circuit.
- Check the connector for the ignition for contact resistance as well as damage to pins and connections.
Check the connector for the Central Electronic Module (CEM) with regards to contact resistance as well as damage to pins and connections.
Check the connector for Engine Control Module (ECM) for contact resistance as well as damage to pins and connections.
Remedy as necessary.
Other information
- See Connecting breakout box for Central Electronic Module (CEM).
- See Connecting breakout box for Engine Control Module (ECM).
- See Signal specification for Central Electronic Module (CEM).
- See Signal specification for Engine Control Module (ECM).
- For connecting test probe, use loose flat pins.
- For information about the cable routing, see the relevant Wiring Diagram.
- For further information about the fuses and relays, see the Wiring Diagram.
- Checking wiring and terminals Checking Wiring and Terminals
Was a fault detected?
Yes - Verification
No - Checking the wiring
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Checking the wiring
- Ignition off.
- For vehicles with automatic transmission:
The gear selector shall be in position P or N.
- For vehicles with manual transmission:
The gear lever shall be in neutral position.
- Parking brake applied.
Maintain the short-circuit between relay socket #3(30) with #5(87).
Check that there is power supply to the starter motor #6/25:2(#A1).
Check that the voltage is approximately battery voltage.
If there is no voltage supply to the starter motor terminal #6/25:2(#A1):
- Check fuses.
- Check the cable between connector 64/90 and starter motor #6/25:2(#A1) for short-circuit to ground and open circuit.
- Check the connector to the starter motor terminal #6/25:2(#A1). Check for contact resistance and damage to pins and connections.
Check that there is a power supply to the starter motor terminal #6/25:1(#B1).
Check that the voltage is approximately battery voltage.
If there is no voltage supply to the starter motor terminal #6/25:1(#B1):
- Check fuses.
- Check the voltage feed cable between the battery and starter motor #6/25:1(#B1) for short-circuit to ground and open circuit.
- Check the connector to the starter motor terminal #6/25:1(#B1). Check for contact resistance and damage to connections.
Remedy as necessary.
Other information
- See Connecting breakout box for Central Electronic Module (CEM).
- See Connecting breakout box for Engine Control Module (ECM).
- See Signal specification for Central Electronic Module (CEM).
- See Signal specification for Engine Control Module (ECM).
- For information about the cable routing, see the relevant Wiring Diagram.
- For further information about the fuses and relays, see the Wiring Diagram.
- Checking wiring and terminals Checking Wiring and Terminals
Was a fault detected?
Yes - Verification
No - DONE
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Verification
Verification
VERIFIED - VERIFIED
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FAULT FOUND - ???
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Checking the starter motor
Checking the starter motor
Checking the starter motor
Note! To carry out this test, the battery must be fault free and the starter motor relay must be checked and there must be no diagnostic trouble codes (DTCs) stored for the symptom.
Warning! If the engine cooling fan is running, wait until it has stopped.
- Ignition off.
- For vehicles with automatic transmission:
The gear selector shall be in position P or N.
- For vehicles with manual transmission:
The gear lever shall be in neutral position.
- Parking brake applied.
- The function of the control solenoid must be checked by temporarily bridging the power supply between terminal #6/25:1(#B1) and the control signal for the starter motor relay terminal #6/25:2 (#A1).
The control solenoid must click and the starter motor must turn.
Other information
- For information about the cable routing, see the relevant Wiring Diagram.
- For further information about the fuses and relays, see the Wiring Diagram.
Does the starter motor turn?
Yes - Voltage drop in wiring to starter motor
No - Checking the starter motor
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Voltage drop in wiring to starter motor
- Ignition off.
- Reinstall the connectors, components etc.
- Connect a voltmeter to starter motor terminal #6/25:2(#A1).
- Check the voltage to the starter motor terminal #6/25:2(#A1) in the start position (ignition position III).
If the voltage drops below approximately 9 V, there is a voltage drop in the wiring circuit to the starter motor.
Select an option:
1. Malfunction was found in the test, that is, the voltage dropped too low in the start position.
2. No malfunction was found in the test, that is, the voltage did not drop too low in the start position.