Connect the diagnostic instrument in Voltmeter mode with the positive terminal connected to Pin 1 and the negative earthed to Pin 2 of the volumetric sensor unit for the alarm. The direct battery voltage reading should be 12 Volts.

See G010 FRONT COURTESY LIGHT

Move on to Step 3

Check in the under-dashboard junction unit whether fuse F39 has blown (it is the second from the top in the left-hand column) and replace.

See B002 JUNCTION UNIT UNDER DASHBOARD

The test can be considered over

Restore the power supply

See E7015 ALARM

Connect the positive probe to Pin 3 of the unit and the negative to Earth.

See G010 FRONT COURTESY LIGHT

Turn the key ON and ensure the reading is 12 Volts.

Move on to Step 5

Check in the under-dashboard junction unit whether fuse F49 has blown (it is in the centre in the right-hand column) and replace.

See B002 JUNCTION UNIT UNDER DASHBOARD

The test can be considered over

Replace the antilift sensors

Op. 5580E50 ANTITHEFT DEVICE VOLUMETRIC SENSOR R R FOLLOWING ELECTRICAL CIRCUIT CHECK

Disconnect connector D from the Body Computer.

See M001 BODY COMPUTER

Connect the diagnostic instrument in Ohmmeter mode between Pin 4 of the unit side connector and Pin 7 of connector D Body Computer side.

See G010 FRONT COURTESY LIGHT

See M001 BODY COMPUTER

Ensure the wiring is continuous and the earth is insulated

Restore continuity/insulation

See E7015 ALARM

Replace the antilift sensors

Op. 5580E50 ANTITHEFT DEVICE VOLUMETRIC SENSOR R R FOLLOWING ELECTRICAL CIRCUIT CHECK