Volvo TAD650VE Workshop Manual page 57

Group 30: Electrical system
Measurements
NOTE! If any of the measurements shows an abnor-
mal value, check the wiring to and from the engine in-
terface.
Signal cable:
•
NOTE! Turn ignition off.
•
Disconnect the connector from the sensor
•
Connect adapter cable 885675 to the cable har-
ness connector to the engine control unit.
•
Use multimeter 9812519 for voltage measure-
ment.
•
Turn ignition on.
Measurement points
1 – 2
Negative cable:
•
NOTE! Cut the current with the main switch.
•
Disconnect the connector from the sensor
•
Connect adapter cable 885675 to the cable har-
ness connector to the engine control unit.
•
Use multimeter 9812519 to do resistance mea-
surement against the engine control unit.
Measurement points
1 – Battery negative
The point of con-
nection for bat-
tery negative on
the engine
Diagnostic Trouble Codes
Nominal value
U ≈ 5 V
Nominal value
R ≈ 0 Ω
55