Diagnostic Aid

Disconnect crank angle sensor harnesses at crank angle sensor connector.
Disconnect all connectors at ECM.
Turn ignition ON. Measure resistance between terminals 34 and WHITE, 35 and GREEN and BLACK and ground. Resistance should be zero.
Measure voltage between GREEN/BLACK and ground. Voltage should be 10-14 volts.
When circuit is found to be in normal condition, replace distributor assembly.

Fig 1: Code No. 41 Schematic, Crank Angle Sensor Circuit

Courtesy of ISUZU MOTOR CO.

Fig 2: Code No. 41 Connector, Crank Angle Sensor Circuit

Courtesy of ISUZU MOTOR CO.

Fig 3: Code No. 41 Flow Chart, Crank Angle Sensor Circuit

Courtesy of ISUZU MOTOR CO.