Nissan Maxima. Instruction — part 499
EC-480
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P2138 APP SENSOR
1. Replace accelerator pedal assembly. Refer to
ACC-3, "Removal and Installation"
2. Refer to
EC-20, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Require-
>> INSPECTION END
11.
CHECK INTERMITTENT INCIDENT
GI-41, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000010095192
1.
CHECK ACCELERATOR PEDAL POSITION SENSOR
1. Reconnect all harness connectors disconnected.
2. Turn ignition switch ON.
3. Check the voltage between ECM harness connector terminals
under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
REPLACE ACCELERATOR PEDAL ASSEMBLY
1. Replace accelerator pedal assembly. Refer to
ACC-3, "Removal and Installation"
2. Go to
EC-469, "Special Repair Requirement"
.
>> INSPECTION END
Special Repair Requirement
INFOID:0000000010095193
1.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
Refer to
EC-20, "ACCELERATOR PEDAL RELEASED POSITION LEARNING : Special Repair Requirement"
.
>> GO TO 2.
2.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
EC-21, "THROTTLE VALVE CLOSED POSITION LEARNING : Special Repair Requirement"
>> GO TO 3.
3.
PERFORM IDLE AIR VOLUME LEARNING
EC-21, "IDLE AIR VOLUME LEARNING : Special Repair Requirement"
.
ECM
Condition
Voltage (V)
Connector
+
–
Terminal
Terminal
E10
81
(APP
sensor 1
signal)
84
(Sensor
ground)
Accelerator
pedal
Fully released
0.5 - 1.0
Fully de-
pressed
4.2 - 4.8
82
(APP
sensor 2
signal)
100
(Sensor
ground)
Fully released
0.25 - 0.5
Fully de-
pressed
2.0 - 2.5
JMBIA1884ZZ
P2138 APP SENSOR
EC-481
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
>> END
EC-482
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
ASCD BRAKE SWITCH
ASCD BRAKE SWITCH
Description
INFOID:0000000010095194
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).
for the ASCD function.
Component Function Check
INFOID:0000000010095195
Regarding Wiring Diagram information, refer to
.
1.
CHECK ASCD BRAKE SWITCH FUNCTION
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 the voltage between ECM harness connectors.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Go to
Diagnosis Procedure
INFOID:0000000010095196
Regarding Wiring Diagram information, refer to
.
1.
CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Turn ignition switch ON.
4. Check the voltage between ASCD brake switch harness con-
nector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 2.
2.
DETECT MALFUNCTIONING PART
Monitor item
Condition
Indication
BRAKE SW1
Brake pedal
Slightly depressed
OFF
Fully released
ON
ECM
Condition
Voltage
Connector
+
–
Terminal
Terminal
E10
110
(ASCD brake
switch signal)
112
Brake
pedal
Slightly
depressed
Approx. 0 V
Fully re-
leased
Battery voltage
JMBIA1881ZZ
ASCD brake switch
Ground
Voltage
Connector
Terminal
E37
1
Ground
Battery voltage
PBIB0857E
ASCD BRAKE SWITCH
EC-483
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
Check the following.
• Fuse block (J/B) connector E6
• Junction block connectors E44, E46
• 10 A fuse (No. 3)
• Harness for open or short between ASCD brake switch and fuse
>> Repair open circuit, short to ground or short to power in harness or connectors.
3.
CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between ASCD brake switch harness connector and ECM harness connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
• Junction block connectors E45, E46
• Harness for open or short between ASCD brake switch and ECM
>> Repair open circuit, short to ground or short to power in harness or connectors.
5.
CHECK ASCD BRAKE SWITCH
EC-483, "Component Inspection (ASCD Brake Switch)"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Replace ASCD brake switch. Refer to
BR-18, "Removal and Installation"
.
6.
CHECK INTERMITTENT INCIDENT
GI-41, "Intermittent Incident"
.
>> INSPECTION END
Component Inspection (ASCD Brake Switch)
INFOID:0000000010095197
1.
CHECK ASCD BRAKE SWITCH-I
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness connector.
3. Check the continuity between ASCD brake switch terminals
under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
ASCD brake switch
ECM
Continuity
Connector
Terminal
Connector
Terminal
E37
2
E10
110
Existed
Terminals
Condition
Continuity
1 and 2
Brake pedal
Fully released.
Existed
Slightly depressed.
Not existed
SEC023D
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