Nissan Xterra. Instruction — part 332
EC-454
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
BRAKE PEDAL POSITION SWITCH
>> Repair open circuit or short to ground or short to power in harness or connectors.
9.
CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 122 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 10.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
10.
CHECK STOP LAMP SWITCH
EC-457, "Component Inspection"
OK or NG
OK
>> GO TO 11.
NG
>> Replace stop lamp switch. Refer to
.
11.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
>> INSPECTION END
M/T MODELS
1.
CHECK OVERALL FUNCTION-I
With CONSULT
1. Turn ignition switch ON.
2. Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT.
3. Check “BRAKE SW1” indication under the following conditions.
Without CONSULT
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 126 and ground under the following conditions.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
2.
CHECK OVERALL FUNCTION-II
With CONSULT
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
Continuity should exist.
CONDITION
INDICATION
Clutch pedal and/or brake pedal: Slightly depressed
OFF
Clutch pedal and brake pedal: Fully released
ON
CONDITION
VOLTAGE
Clutch pedal and/or brake pedal: Slightly depressed
Approximately 0V
Clutch pedal and brake pedal: Fully released
Battery voltage
CONDITION
INDICATION
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
BRAKE PEDAL POSITION SWITCH
EC-455
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Without CONSULT
Check voltage between ECM terminal 122 and ground under the following conditions.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 10.
3.
CHECK CLUTCH PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect clutch pedal position switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between clutch pedal position switch terminal 1 and ground under the following conditions
with CONSULT or tester.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 4.
4.
CHECK BRAKE PEDAL POSITION SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect brake pedal position switch harness connector.
3. Turn ignition switch ON.
4. Check voltage between brake pedal position switch terminal 1 and ground with CONSULT or tester.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART
Check the following.
• Fuse block (J/B) connector E160
• 10 A fuse (No.12)
• Harness for open or short between brake pedal position switch and fuse
>> Repair open circuit or short to ground in harness or connectors.
6.
CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between brake pedal position switch terminal 2 and clutch pedal position switch
terminal 1.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
CONDITION
VOLTAGE
Brake pedal: Fully released
Approximately 0V
Brake pedal: Slightly depressed
Battery voltage
CONDITION
VOLTAGE
Brake pedal: Slightly depressed
Approximately 0V
Brake pedal: Fully released
Battery voltage
Voltage: Battery voltage
Continuity should exist.
EC-456
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
BRAKE PEDAL POSITION SWITCH
7.
CHECK BRAKE PEDAL POSITION SWITCH
EC-457, "Component Inspection"
OK or NG
OK
>> GO TO 14.
NG
>> Replace brake pedal position switch. Refer to
8.
CHECK BRAKE PEDAL POSITION SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between ECM terminal 126 and clutch pedal position switch terminal 2.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 9.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
9.
CHECK CLUTCH PEDAL POSITION SWITCH
EC-457, "Component Inspection"
OK or NG
OK
>> GO TO 14.
NG
>> Replace clutch pedal position switch. Refer to
10.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check voltage between stop lamp switch terminal 2 and ground with CONSULT or tester.
OK or NG
OK
>> GO TO 12.
NG
>> GO TO 11.
11.
DETECT MALFUNCTIONING PART
Check the following.
• Fuse block (J/B) connector E160
• 10 A fuse (No.20)
• Harness for open or short between stop lamp switch and battery
>> Repair open circuit or short to ground or short to power in harness or connectors.
12.
CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 122 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 13.
NG
>> Repair open circuit or short to ground or short to power in harness or connectors.
13.
CHECK STOP LAMP SWITCH
EC-457, "Component Inspection"
Continuity should exist.
Voltage: Battery voltage
Continuity should exist.
BRAKE PEDAL POSITION SWITCH
EC-457
< DTC/CIRCUIT DIAGNOSIS >
[VQ40DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
OK or NG
OK
>> GO TO 14.
NG
>> Replace stop lamp switch. Refer to
.
14.
CHECK INTERMITTENT INCIDENT
GI-40, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection
INFOID:0000000009484211
BRAKE PEDAL POSITION SWITCH
1. Turn ignition switch OFF.
2. Disconnect brake pedal position switch harness connector.
3. Check harness continuity between brake pedal position switch terminals 1 and 2 under the following con-
ditions.
If NG, adjust brake pedal position switch installation, refer to
BR-15, "Inspection and Adjustment"
, and per-
form step 3 again.
CLUTCH PEDAL POSITION SWITCH
1. Turn ignition switch OFF.
2. Disconnect clutch pedal position switch harness connector.
3. Check harness continuity between clutch pedal position switch terminals 1 and 2 under the following con-
ditions.
If NG, adjust clutch pedal position switch installation, refer to
BR-15, "Inspection and Adjustment"
, and
perform step 3 again.
STOP LAMP SWITCH
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness connector.
3. Check harness continuity between stop lamp switch terminals 1 and 2 under the following conditions.
If NG, adjust stop lamp switch installation, refer to
BR-15, "Inspection and Adjustment"
, and perform step
3 again.
Condition
Continuity
When brake pedal: Fully released.
Should exist.
When brake pedal: Slightly depressed.
Should not exist.
Condition
Continuity
Clutch pedal: Fully released
Should exist
Clutch pedal: Slightly depressed
Should not exist
Condition
Continuity
When brake pedal: Fully released.
Should not exist.
When brake pedal: Slightly depressed.
Should exist.
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