Tod Control Unit Check

If TOD ECU is suspected of faulty operation, each pin can be checked for correct values. See Fig 1 . Disconnect ECU connector unless otherwise specified in test. Only disconnect ECU with ignition off. If standard values are not obtained, check again with a different tester before condemning ECU.

Fig 1: TOD Electronic Control Unit (ECU) Test

Courtesy of ISUZU MOTOR CO.