Checking the wiring
With the ignition on, measure the voltage between the contacts of the wire part of the connector and the ground.
| Circuit under test | Nominal voltage |
| Contact 1 - "ground" | 2.4 V |
| Contact 2 - "ground" |
1. Signal A
2. Signal B
With the ignition on, measure the voltage between the contacts of the wire part of the connector and the ground.
1. Signal A
2. Signal B