Code 41 - Crankshaft Position Sensor Signal

NOTE: See appropriate wiring diagram in L - WIRING DIAGRAM article for terminal and connector identification.

NOTE: Test number refers to number on diagnostic chart.

Inspecting Crankshaft Position (CKP) sensor circuit:

Disconnect CKP sensor and ECM connectors.
Turn ignition on.
Measure CKP sensor voltage and resistance values. See CKP SENSOR SPECIFICATIONS table.
If values are not within specification, repair or replace appropriate harness or connector.
Reconnect CKP and ECM connectors.

CKP SENSOR SPECIFICATIONS

Between Terminals ⁽¹⁾

Resistance

Voltage

20 & Black/White

7 & Green/Yellow

Green/Black & Ground

10-14

Black & Ground

⁽¹⁾	Circuit numbers refer to ECM terminal numbers, and wire colors refer to CKP sensor wire colors at connector.

Fig 1: Code 41 - Diagnostic Flowchart

Courtesy of ISUZU MOTOR CO.