Part 1
Signal too high. Intermittent fault
Checking the component
Note! This diagnostic trouble code (DTC) is normal for the V70 police car in Sweden because of the type of deadlocks used on the rear doors. It does not need to erased or remedied.
Check that the lock has not stuck by using the lock button on the inside of the door. Check that the lock unit is correctly installed.
Was a fault detected?
Yes - DONE
No - Checking the wiring and switches
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Checking the wiring and switches
Check the switches at the central electronic module and lock unit. Check for contact resistance and oxidation.
Check the signal cable for the lock position sensor between the central electronic module connector terminal #C3 and lock module connector terminal #5. Check for an open-circuit.
Check the signal cable for the lock position sensor between the central electronic module connector terminal #C3 and lock unit connector terminal #5. Check for an intermittent short-circuit to supply voltage.
Note! Diagnostic trouble code (DTC) REM-6A09 or REM-6A0B may also be stored if this fault occurs. Click the VCT2000 symbol to read diagnostic trouble codes (DTCs).
Other information:
- To access and replace the lock module, see Driver's door module / passenger door module (DDM/PDM), replacing Driver's Door Module/Passenger Door Module (DDM/PDM), Replacing
- For information on the central electronic module connectors, see Central electronic module (CEM), replacing Central Electronic Module (CEM), Replacing
- To connect the breakout box, see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM)
- For further information about signals and other values, see Signal specification Pinout Values and Diagnostic Parameters
- Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
Were any diagnostic trouble codes (DTCs) stored?
Yes - DONE
No - Symptom test
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Symptom test
Checking the door locking function
Question
Which door has the problem?
1. Driver door.
2. Passenger door.
3. Rear left door.
4. Rear right door.
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Driver door
Checking the driver door
Check
Is the passenger door lock not working?
Yes - Checking the fuse
No - Check
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Checking the fuse
Remove the fuse 11C/27 in boot fuse box.
Check that fuse is intact and check for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Additional information
- To access relay/fuse box in the boot, see Integrated relay/fusebox cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
Is the fuse intact?
Yes - Checking for an open circuit
No - Checking for a short circuit
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Check
1. Window lift works on that particular door
2. Window lift does not work on that particular door.
Choose the correct option from above.
1 - Checking the locking motor wires
2 - Check
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Check
1. The vehicle is left hand drive
2. The vehicle is right hand drive.
Choose the correct option from above.
1 - Checking the fuse
2 - Checking the fuse
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Checking the fuse
Remove the fuse 11C/35 in boot fuse box.
Check that fuse is intact and check for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Additional information
- To access relay/fuse box in the boot, see Integrated relay/fusebox cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
Is the fuse intact?
Yes - Checking the voltage
No - Checking for a short circuit
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Checking the fuse
Remove the fuse 11C/36 in boot fuse box.
Check that fuse is intact and check for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Additional information
- To access relay/fuse box in the boot, see Integrated relay/fusebox cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
Is the fuse intact?
Yes - Checking the voltage
No - Checking for a short circuit
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Checking for an open circuit
Check door control unit connector B7 for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Trouble-shoot the wire between fuse holder secondary side (left) and door control unit connector B7 for an open circuit as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
If a fault is detected, check in particular the intermediate connector in the cable harness (1/control unit) for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
If there is an open circuit the fault should be between the fuse and the common junction point 53/427.
Continue - Fault Found
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Checking for a short circuit
Check the resistance between the fuse holder secondary side (left) and ground.
The ohmmeter should display infinite resistance.
Note! If the value is correct the fault could be intermittent.
Switch to trouble-shooting intermittent short circuits to ground as described in Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
If the ohmmeter indicates a fault (short circuit), trouble-shoot the wires between the fuse and door control unit connector B7 for a short circuit to ground as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
The fault should be between the fuse and the common junction point 53/427.
Replace fuse.
Continue - Fault Found
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Checking the voltage
Check the voltage in the door control unit connector B12.
Does the voltmeter show the battery voltage?
Yes - Checking the locking motor wires
No - Checking for an open circuit
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Checking for an open circuit
Check door control unit connector B12 for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Trouble-shoot the wire between fuse holder secondary side (left) and door control unit connector B12 for an open circuit as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
If a fault is detected, check in particular the intermediate connector in the cable harness (1) for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Fault Found
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Checking for a short circuit
Check the resistance between the fuse holder secondary side (left) and ground.
The ohmmeter should display infinite resistance.
Note! If the value is correct the fault could be intermittent.
Switch to trouble-shooting intermittent short circuits to ground as described in Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
If the ohmmeter indicates a fault (short circuit), trouble-shoot the wires between the fuse and door control unit connector B12 for a short circuit to ground as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Replace fuse.
Additional information
- To access relay/fuse box in the boot, see Integrated relay/fusebox cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
Continue - Fault Found
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Checking the locking motor wires
Check door control unit and lock unit connectors for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Trouble-shoot the wire between door control unit connector B2 and lock unit connector 8 for an open circuit as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Trouble-shoot the wire between door control unit connector B6 and lock unit connector 7 for an open circuit as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Additional information
- To access/replace rear electronic module (REM), see Integrated relay/fusebox cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
Is there a fault?
Yes - Fault Found
No - Replacing the component
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Replacing the component
Replace lock unit as described in Replacing the switch for the lock unit / cargo compartment lighting Service and Repair.
Is there a fault?
Yes - Fault Found
No - Replacing the component
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Replacing the component
Replace control unit as described in Integrated relay/fusebox cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
Continue - Fault Found
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FAULT FOUND - Fault Found
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Passenger door
Checking the passenger door
Check
Is the driver door lock not working?
Yes - Checking the fuse
No - Check
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Checking the fuse
Remove the fuse 11C/27 in boot fuse box.
Check that fuse is intact and check for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Additional information
- To access relay/fuse box in the boot, see Integrated relay/fusebox cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
Is the fuse intact?
Yes - Checking for an open circuit
No - Checking for a short circuit
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Check
1. Window lift works on that particular door
2. Window lift does not work on that particular door.
Choose the correct option from above.
1 - Checking the locking motor wires
2 - Check
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Check
1. The vehicle is left hand drive
2. The vehicle is right hand drive.
Choose the correct option from above.
1 - Checking the fuse
2 - Checking the fuse
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Checking the fuse
Remove the fuse 11C/35 in boot fuse box.
Check that fuse is intact and check for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Additional information
- To access relay/fuse box in the boot, see Integrated relay/fusebox cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
Is the fuse intact?
Yes - Checking the voltage
No - Checking for a short circuit
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Checking the fuse
Remove the fuse 11C/36 in boot fuse box.
Check that fuse is intact and check for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Additional information
- To access relay/fuse box in the boot, see Integrated relay/fusebox cargo compartment/Rear electronic module (REM), replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
Is the fuse intact?
Yes - Checking the voltage
No - Checking for a short circuit
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Checking for an open circuit
Check door control unit connector B7 for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Trouble-shoot the wire between fuse holder secondary side (left) and door control unit connector B7 for an open circuit as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
If a fault is detected, check in particular the intermediate connector in the cable harness (1/control unit) for contact resistance and oxidation as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
If there is an open circuit the fault should be between the fuse and the common junction point 53/427.
Continue - Fault Found
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Checking for a short circuit
Check the resistance between the fuse holder secondary side (left) and ground.
The ohmmeter should display infinite resistance.
Note! If the value is correct the fault could be intermittent.
Switch to trouble-shooting intermittent short circuits to ground as described in Checking wiring and terminals. Intermittent faults Checking Wiring and Terminals. Intermittent Faults.
If the ohmmeter indicates a fault (short circuit), trouble-shoot the wires between the fuse and door control unit connector B7 for a short circuit to ground as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
The fault should be between the fuse and the common junction point 53/427.
Replace fuse.
Continue - Fault Found
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Checking the voltage
Check the voltage in the door control unit connector B12.
Does the voltmeter show the battery voltage?
Yes - Checking the locking motor wires
No - Checking for an open circuit
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