Checking the Lock Function of the Fuel Tank Filler Cover
Checking the lock function of the fuel tank filler cover
Check
Check that the lock is not sticking or jammed. Check that the lock unit is correctly installed.
Check that the locks for the rear doors are not disabled.
1. The fuel tank filler cover lock was sticking or had jammed. The lock unit was not correctly installed
2. The locks for the rear doors are disabled
3. No fault detected.
Select an alternative that corresponds to the above.
1 - Fault Found
2 - Checking fuses
3 - Replacing the component
-------------------------------------------------
Replacing the component
Replace the relays for locking (2/58) and unlocking (2/59) in the integrated relay / fusebox in the cargo compartment. Check the relay base switches. Check for contact resistance and oxidation.
Other information
- To access the integrated relay / fusebox in the cargo compartment, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Was a fault detected?
Yes - Fault Found
No - Circuit test
-------------------------------------------------
Circuit test
The fault is caused by an open-circuit in one of the relay circuits in the lock unit. To determine in which circuit the fault is:
disconnect the connector at the lock unit
check the connectors. Check for contact resistance and oxidation
measure the resistance between terminals #1 and #2 on the cable connector.
Other information
- To access and replace the lock unit, see Electric motor, fuel tank filler cover, replacing Service and Repair
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
The ohmmeter should read 0ohm.
OK - Checking the component
Not OK - Circuit test continued
-------------------------------------------------
Circuit test continued
Measure the resistance between terminal #1 and ground and between terminal #2 and ground on the cable connector.
The ohmmeter should read 0 ohm.
1. The ohmmeter displays a fault between terminal #1 and ground
2. The ohmmeter displays a fault between terminal #2 and ground.
Select an alternative that corresponds to the above.
1 - Checking the unlocking relay circuit
2 - Checking the locking relay circuit
-------------------------------------------------
Checking the locking relay circuit
Remove the locking relay (2/58 (RMI 20)).
Check the cable between terminal #2 the cable and connector and terminal #3 on the relay base. Check for an open-circuit.
Remedy as necessary.
If no fault is detected, measure the resistance between terminal #4 in the relay base and ground.
The ohmmeter should read 0 ohm.
If the resistance is incorrect, replace the rear electronic module.
Other information
- To access and replace the rear electronic module, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing
- To access the lock unit, see Electric motor, fuel tank filler cover, replacing Service and Repair
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Fault Found
-------------------------------------------------
Checking the unlocking relay circuit
Remove the unlocking relay (2/59 (RMI 21)).
Check the cable between terminal #2 the cable and connector and terminal #3 on the relay base. Check for an open-circuit.
Remedy as necessary.
If no fault is detected, measure the resistance between terminal #4 in the relay base and ground.
The ohmmeter should read 0 ohm.
If the resistance is incorrect, replace the rear electronic module.
Other information
- To access and replace the rear electronic module, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing
- To access the lock unit, see Electric motor, fuel tank filler cover, replacing Service and Repair
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Fault Found
-------------------------------------------------
Checking the component
Measure the resistance between pins terminals #1 and #2 on the chassis switch lock unit.
The ohmmeter should read 5 ohm.
If the resistance is incorrect, replace the lock unit.
Other information
- To access the rear electronic module, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing
- To access and replace the lock unit, see Electric motor, fuel tank filler cover, replacing Service and Repair
- For further information about signals and other values, see Signal specification Pinout Values and Diagnostic Parameters.
Was a fault detected?
Yes - Fault Found
No - Checking relay power supply
-------------------------------------------------
Checking relay power supply
Remove the locking relay (2/58 (RMI 20)).
Measure the voltage between terminal #5 in the relay base and ground.
The voltmeter should read battery voltage.
Hint: If the value is OK but the fault remains, connect the connector to the lock module between terminals #3 and #5 in the relay base to force a supply to the locking motor when continuing to take measurements.
Other information
- To access the rear electronic module, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing.
Does the voltmeter read battery voltage?
Yes - Fault Found
No - Checking fuses
-------------------------------------------------
Checking fuses
Remove fuse 11D/8 from the fusebox in the cargo compartment.
Check that fuse 11D/8 is intact. Check for contact resistance and oxidation.
Other information
- To access the integrated relay / fusebox in the cargo compartment, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Is the fuse intact?
Yes - Checking for an open-circuit
No - Checking for a short-circuit
-------------------------------------------------
Checking for an open-circuit
Remove relay 2/59 from the integrated relay / fusebox in the cargo compartment. Fault-trace the cable between the secondary side of the fuse holder (left) and terminal #5 in the relay base. Check for an open-circuit.
Other information
- To access the integrated relay / fusebox in the cargo compartment, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Fault Found
-------------------------------------------------
Checking for a short-circuit
Measure the resistance between the fuse holder secondary side (left) and ground.
The ohmmeter should read infinite resistance.
If the value is correct, replace the fuse.
Note! The fault could be intermittent.
Fault-trace all affected relay circuits for a short-circuit to ground if the value is incorrect.
Hint: Replace fuse.
If the fuse blows immediately the short-circuit is in the relay power cable.
If the fuse blows when the relevant relay is activated, the short-circuit is in the component power supply cable
The relay circuits affected are from relays 2/111, 2/112, 2/113, 2/114, 2/115, 2/56, 2/59 and 2/67.
Other information
- To access the integrated relay / fusebox in the cargo compartment, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing Integrated Relay/Fusebox Cargo Compartment/Rear Electronic Module (REM), Replacing
- Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Continue - Fault Found
-------------------------------------------------