Checking Wiring

Fig 1: Identifying Ignition OFF

GLL101045

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Connector(s) Disconnected

GLL101071

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off
Disconnect the connector for the front mass movement sensor (MMS) or ultrasonic sensor (IMS).
Check the signal cables between the mass movement sensor (MMS) or ultrasonic sensor (IMS) and Central electronic module (CEM).

NOTE:
When the adapter wiring cannot be used, take the reading on the reverse of the connector if possible in order not to damage the contacts. If the reading cannot be taken on the reverse, use a loose terminal pin to take the reading in the connector.

Take readings between:
- Central electronic module (CEM) terminal #H21 (#35) and mass movement sensor (MMS) or (IMS) #A1 for an open-circuit and short-circuit to voltage and ground.
- Central electronic module (CEM) terminal #H17 (#37) and rear mass movement sensor (MMS) or (IMS) #A3 for an open-circuit and short-circuit to voltage and ground.
- Central electronic module (CEM) terminal #D10 (#10) and movement sensor (MMS) or (IMS) #A5 for an open-circuit.
Remedy as necessary.

If no other fault is detected, replace the front movement sensor (MMS) or (IMS).

Other information

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Refer to VERIFICATION