Diagnostic Procedure

1. CHECK GROUND CONNECTIONS 
   1. Turn ignition switch OFF.
   2. Loosen and retighten three ground screws on the body.

      Refer to "GROUND INSPECTION ".

      Fig 1: Identifying Multi-Remote Control Unit And Steering Member

      Courtesy of NISSAN MOTOR CO., U.S.A.

   OK or NG 

   OK: GO TO 2.

   NG: Repair or replace ground connections.

2. 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.
   MONITOR ITEM CONDITION CHART
   
   

   Switch	Monitor item	Condition	Indication
   MAIN (CRUISE) switch	MAIN SW	Pressed	ON
   		Released	OFF
   CANCEL switch	CANCEL SW	Pressed	ON
   		Released	OFF
   RESUME/ACCEL switch	RESUME/ACC SW	Pressed	ON
   		Released	OFF
   SET/COAST switch	SET SW	Pressed	ON
   		Released	OFF

   Fig 2: Generic Scan Tool - Data Monitor

   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.
   VOLTAGE SPECIFICATION
   
   

   Switch	Condition	Voltage [V]
   MAIN (CRUISE) switch	Pressed	Approx. 0
   	Released	Approx. 4.0
   CANCEL switch	Pressed	Approx. 1.0
   	Released	Approx. 4.0
   RESUME/ACCEL switch	Pressed	Approx. 3.0
   	Released	Approx. 4.0
   SET/COAST switch	Pressed	Approx. 2.0
   	Released	Approx. 4.0

   Fig 3: Checking Voltage Between ECM Terminal 99 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

   OK or NG 

   OK: GO TO  8.

   NG: GO TO 3.

3. CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT 
   1. Turn ignition switch OFF.
   2. Disconnect ASCD steering switch harness connector and ECM harness connector.
   3. Check harness continuity between ASCD steering switch terminal 5 and ECM terminal 67. Refer to WIRING DIAGRAM .

      Continuity should exist. 

   4. Also check harness for short to ground and short to power.

   OK or NG 

   OK: GO TO  5.

   NG: GO TO 4.

4. DETECT MALFUNCTIONING PART 

   Check the following.

   • Harness connectors M62, F42
   • Harness connectors M206, M202
   • Combination switch (spiral cable)
   • Harness for open and short between ECM and ASCD steering switch

     Repair open circuit or short to ground or short to power in harness or connectors.

5. CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT 
   1. Check harness continuity between ECM terminal 99 and ASCD steering switch terminal 4.

      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  7.

   NG: GO TO 6.

6. DETECT MALFUNCTIONING PART 

   Check the following.

   • Harness connectors M206, M202
   • Combination switch (spiral cable)
   • Harness for open and short between ECM and ASCD steering switch

     Repair open circuit or short to ground or short to power in harness or connectors.

7. CHECK ASCD STEERING SWITCH 

   Refer to "COMPONENT INSPECTION ".

   OK or NG 

   OK: GO TO 8.

   NG: Replace ASCD steering switch.

8. CHECK INTERMITTENT INCIDENT 

   Refer to "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT ".

INSPECTION END