Test Step 3

Test Step 3:

Load Circuit Power Supply Test:

Measure voltage between pin 20 and vehicle ground.
Specification: approx. battery voltage.

If no: Repair positive electric wire to control unit.
If yes: Measure voltage between pin 20 and pin 3.
Specification: approx. battery voltage.

If no: Repair negative electric wire of control unit.
If yes: Continue with Test Step 4.