DTC 46: Operation SW CIRC

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ECM CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect ECM connector and connect it securely again. Erase DTC, then perform self-diagnosis of ICC system again.
OK or NG
- OK:
  - Poor connector connection.
  - Check connector. Check connector housing for disconnected, loose, bent, and collapsed terminals. If any malfunction is detected, repair as necessary. Erase DTC and perform ICC system running test. Refer to "ICC SYSTEM RUNNING TEST ". Then perform self-diagnosis of ICC system again.
- NG: GO TO 2.
CHECK ICC STEERING SWITCH
Check ICC steering switch. Refer to "ICC STEERING SWITCH ".

OK or NG
- OK: GO TO 3.
- NG: Replace ICC steering switch assembly. Refer to "REMOVAL AND INSTALLATION OF STEERING WHEEL SWITCH ". Erase DTC and perform ICC system running test. Refer to "ICC SYSTEM RUNNING TEST ". Then perform self-diagnosis of ICC system again.
CHECK ICC STEERING SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM and spiral cable connectors.
3. Check continuity between ECM harness connectors E16 and F54 terminals 67 (B), 99 (G/Y) and spiral cable harness connector M30 terminals 33 (B), 34 (G/Y).
  - 67 - 33, 99 - 34 Continuity should exist.
  Fig 1: Checking Continuity Between ECM Harness Connectors E16 And F54 Terminals 67 (B), 99 (G/Y) And Spiral Cable Harness Connector M30 Terminals 33 (B), 34 (G/Y)
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: GO TO 4.
- NG:
  - Repair harness between ECM and spiral cable.
  - Erase DTC and perform ICC system running test. Refer to "ICC SYSTEM RUNNING TEST ". Then perform self-diagnosis of ICC system again.
CHECK ICC STEERING SWITCH SIGNAL CIRCUIT
1. Disconnect remaining spiral cable connector.
2. Check continuity between spiral cable (to vehicle) terminals 33, 34 and spiral cable (to switch) terminals 14,15.
  - 34 - 14, 33 - 15 Continuity should exist.
  Fig 2: Checking Continuity Between Spiral Cable (To Vehicle) Terminals 33, 34 And Spiral Cable (To Switch) Terminals 14,15
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
- OK: Replace ECM. Erase DTC and perform ICC system running test. Refer to "ICC SYSTEM RUNNING TEST ". Then perform self-diagnosis of ICC system again.
- NG:
  - Replace spiral cable. Refer to "REMOVAL AND INSTALLATION "
  - Erase DTC and perform ICC system running test. Refer to "ICC SYSTEM RUNNING TEST ". Then perform self-diagnosis of ICC system again.