850 L5-2.3L Turbo VIN 57 B5234FT (1994)
Close doors and trunk.
Bridge relay base terminals LA and T.
Interior lighting should come on if the trunk or any door is opened.
If lighting comes on:
Check interior lighting ground lead as per C21.
If interior lighting does not come on:
Check interior lighting switches in central locking units as per K5.
K5: Checking Interior Lighting Switches In Central Locking Units
Switch off Ignition.
Reinstall central locking relay 2/7.
Remove all door panels.
Open central locking unit connectors.
Front door units.
Connect an ohmmeter between terminals 6 and 14 in central locking unit 14-pin connector.
Ohmmeter should Indicate 0 Ohm with door open.
Ohmmeter should Indicate infinite resistance with door closed.
Rear door units.
Connect an ohmmeter between terminals 2 and 5 in central locking unit 8-pin connector.
Ohmmeter should Indicate 0 Ohm with door open. Ohmmeter should show Infinite resistance with closed door.
If reading is correct:
Check ground lead to interior lighting switch in central locking unit as per K6.
