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Checking the voltage +15

Checking the voltage +15

Fault symptom

The alarm is not tripped when the ignition is turned on with activated alarm

Fuse 19 blows

Action


1. Check that fuse 19 is intact and supplied with current.

2. Connect ISAT and select "READ VALUES" on the menu, then select "IGNITION +15". Turn the ignition key to on and read off the display.

ISAT must display "ON" in the drive and start positions.

3. Connect BOB and check the voltage by measuring between the control module connection pin 17 and a good grounding point when the ignition is turned to drive and start positions.

The voltage must be approximately 12 V.

4. Check the wiring harness for short-circuit/open circuit by measuring between the control module connection pin 17 and the fuse output side.

The resistance should be < 1 Ohm.