Diagnostic Procedure

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: Checking ASCD Steering Switch Circuit With CONSULT-II (1 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Checking ASCD Steering Switch Circuit With CONSULT-II (2 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
Without CONSULT-II
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 99 and ground with pressing each button.
  
  Fig 3: Checking Voltage Between ECM Terminal 99 & Ground Without CONSULT-II
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Checking ASCD Steering Switch Circuit Without CONSULT-II
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  OK or NG
  
  OK: GO TO 7.
  
  NG: GO TO 2.
CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect combination switch harness connector.
4. Check harness continuity between combination switch terminal 15 and ECM terminal 67. Refer to Wiring Diagram.
  Continuity should exist.
5. Also check harness for short to ground and short to power.
OK or NG

OK: GO TO 4.

NG: GO TO 3.

Fig 5: DTC P1564 Identifying ASCD Steering Switch
Courtesy of NISSAN MOTOR CO., U.S.A.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M31, E152
- Harness connectors E19, F33
- Combination switch (spiral cable)
- Harness for open and short between ECM and combination switch
  : Repair open circuit or short to ground or short to power in harness or connectors.
CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 99 and combination switch terminal 14. Refer to Wiring Diagram.
  Continuity should exist.
2. Also check harness for short to ground and short to power.
OK or NG

OK: GO TO 6.

NG: GO TO 5.
DETECT MALFUNCTIONING PART
Check the following.
- Harness connectors M31, E152
- Combination switch (spiral cable)
- Harness for open and short between ECM and combination switch
  : 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

OK: GO TO 7.

NG: Replace ASCD steering switch.
CHECK INTERMITTENT INCIDENT
Refer to TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT .

: INSPECTION END