Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON.
2. Select "MAIN SW", "RESUME/ACC SW", "SET SW" and "CANCEL SW" in "DATA MONITOR" mode with CONSULT-II.
3. Check each item indication under the following conditions.
Fig 1: Indication Description
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Displaying "DATA MONITOR" Mode
Courtesy of NISSAN MOTOR CO., U.S.A.

With CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 99 and ground with pressing each button.
Fig 3: Voltage Specification Chart
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Checking Voltage Between ECM Terminal 99 And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG
1. OK: GO TO 7.
2. NG: GO TO 2.
CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect combination switch harness connector M203.
3. Check harness continuity between combination switch terminal 14 and ground. Refer to WIRING DIAGRAM .
  Continuity should exist.
4. Also check harness for short to power.
OK or NG
1. OK: GO TO 4.
2. NG: GO TO 3.
  
  Fig 5: Checking Harness Continuity Between Combination Switch Terminal 14 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M82, F102
- Combination switch (spiral cable)
- Harness for open and short between ECM and combination switch
  1. Repair open circuit or short to power in harness or connectors.
CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 99 and combination switch terminal 15. Refer to WIRING DIAGRAM .
  Continuity should exist.
3. Also check harness for short to ground and short to power.
OK or NG
1. OK: GO TO 6.
2. NG: GO TO 5.
DETECT MALFUNCTIONING PART
Check the following.
- Combination switch (spiral cable)
- Harness for open and short between ECM and combination switch
  1. Repair open circuit or short to ground or short to power in harness or connectors.
CHECK ASCD STEERING SWITCH
Refer to "COMPONENT INSPECTION ".

OK or NG
1. OK: GO TO 7.
2. NG: Replace steering wheel.
CHECK INTERMITTENT INCIDENT
Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".
1. INSPECTION END