Description
When the brake pedal is depressed, ASCD brake switch is turned OFF and stop lamp switch is turned ON.
ECM detects the state of the brake pedal by those two types of input (ON/OFF signal).
Refer to EC-68, "System Diagram" for the ASCD function.
DTC Logic
DTC DETECTION LOGIC
NOTE:
1st trip DTC is erased when ignition switch is turned OFF. And even when malfunction A is detected in two consecutive trips, DTC is not stored in ECM memory.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
NOTE: The procedure for malfunction B is not described. It takes an extremely long time to complete the procedure for malfunction B. By performing the procedure for malfunction A, the condition that causes malfunction B can be detected.
2.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
CAUTION: Always drive vehicle at a safe speed.
NOTE: This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.
If a road test is expected to be easier, it is unnecessary to lift the vehicle.
With GST
Follow the procedure "With CONSULT" above.
3.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT
CAUTION: Always drive vehicle at a safe speed.
NOTE: This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle.
If a road test is expected to be easier, it is unnecessary to lift the vehicle.
With GST
Follow the procedure "With CONSULT" above.
Diagnosis Procedure
Regarding Wiring Diagram information, refer to EC-554, "Wiring Diagram".
1.CHECK OVERALL FUNCTION-I
With CONSULT
Without CONSULT
2.CHECK OVERALL FUNCTION-II
With CONSULT
Check "BRAKE SW2" indication in "DATA MONITOR" mode.
Without CONSULT
Check the voltage between ECM harness connectors.
3.CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
4.DETECT MALFUNCTIONING PART
Check the following.
5.CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
6.DETECT MALFUNCTIONING PART
Check the following.
7.CHECK ASCD BRAKE SWITCH
8.CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
9.DETECT MALFUNCTIONING PART
Check the following.
10.CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
11.DETECT MALFUNCTIONING PART
Check the following.
12.CHECK STOP LAMP SWITCH
13.CHECK INTERMITTENT INCIDENT
Component Inspection (ASCD Brake Switch)
1.CHECK ASCD BRAKE SWITCH-I
2.CHECK ASCD BRAKE SWITCH-II
Component Inspection (Stop Lamp Switch)
1.CHECK STOP LAMP SWITCH-I
2.CHECK STOP LAMP SWITCH-II
Precautions on cruise control
1. CANCEL switch
2. RES+ switch
3. SET- switch
4. ON/OFF cruise switch
If the cruise control system malfunctions, it
cancels automatically.
WARNING
Do not use the cruise control when driving
under the following conditions:
When it is not possible to keep the
vehicle at ...
Changing engine coolant
A NISSAN dealer can change the engine coolant.
The service procedure can be found in the
NISSAN Service Manual.
Improper servicing can result in reduced
heater performance and engine overheating.
WARNING
To avoid the danger of being scalded,
never change the coolant when the engine
is ...
Power generation voltage variable control system operation
inspection
Diagnosis Procedure
CAUTION:
When performing this inspection, always use a charged battery that has completed
the battery inspection.
(When the charging rate of the battery is low, the response speed of the voltage
change will
become slow. This can cause an incorrect inspection.)
1.CHEC ...