Nissan Maxima. Manual — part 477
EC-392
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0605 ECM
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010095074
1.
INSPECTION START
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC CONFIRMATION PROCEDURE.
Is the 1st trip DTC P0605 displayed again?
YES
>> GO TO 2.
NO
>> INSPECTION END
2.
REPLACE ECM
1. Replace ECM.
2. Go to
EC-17, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
>> INSPECTION END
P0607 ECM
EC-393
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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P0607 ECM
Description
INFOID:0000000010095075
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
DTC Logic
INFOID:0000000010095076
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check DTC.
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010095077
1.
INSPECTION START
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC CONFIRMATION PROCEDURE.
.
4. Check DTC.
Is the DTC P0607 displayed again?
Yes
>> GO TO 2.
No
>> INSPECTION END
2.
REPLACE ECM
1. Replace ECM.
2. Go to
EC-17, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
.
>> INSPECTION END
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0607
CAN communication bus
When detecting error during the initial diagno-
sis of CAN controller of ECM.
• ECM
EC-394
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
P0643 SENSOR POWER SUPPLY
P0643 SENSOR POWER SUPPLY
DTC Logic
INFOID:0000000010095078
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conduct-
ing the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 8 V at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Start engine and let it idle for 1 second.
3. Check DTC
Is DTC detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010095079
Regarding Wiring Diagram information, refer to
.
1.
CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E9. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace ground connection.
2.
CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT
DTC No.
Trouble diagnosis
name
DTC detecting condition
Possible cause
P0643
Sensor power supply
circuit short
ECM detects that the voltage of power
source for sensor is excessively low or high.
• Harness or connectors
[Accelerator pedal position (APP) sensor 1 cir-
cuit is shorted.]
[Throttle position (TP) sensor circuit is short-
ed.]
[Camshaft position (CMP) sensor (PHASE)
circuit is shorted.)
[Exhaust valve timing (EVT) control position
sensor circuit is shorted.]
[Power steering pressure (PSP) sensor circuit
is shorted.]
(Battery current sensor circuit is shorted.)
• APP sensor
• TP sensor
• CMP sensor (PHASE)
• EVT control position sensor
• PSP sensor
• Battery current sensor
P0643 SENSOR POWER SUPPLY
EC-395
< DTC/CIRCUIT DIAGNOSIS >
[VQ35DE]
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1. Disconnect accelerator pedal position (APP) sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between APP sensor harness connector and
ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 3.
3.
CHECK SENSOR POWER SUPPLY CIRCUIT
Check harness for short to power and short to ground, between the following terminals.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair short to ground or short to power in harness or connectors.
4.
CHECK COMPONENTS
Check the following.
• Camshaft position sensor (PHASE) (Refer to
EC-302, "Component Inspection"
• EVT control position sensor (Refer to
EC-402, "Component Inspection"
• Battery current sensor (Refer to
EC-415, "Component Inspection"
.)
• Power steering pressure sensor (Refer to
EC-387, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace malfunctioning component.
5.
CHECK TP SENSOR
EC-209, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> GO TO 6.
6.
REPLACE ELECTRIC THROTTLE CONTROL ACTUATOR
1. Replace electric throttle control actuator. Refer to
EM-25, "Removal and Installation"
.
2. Go to
EC-209, "Special Repair Requirement"
.
>> INSPECTION END
7.
CHECK APP SENSOR
EC-469, "Component Inspection"
APP sensor
Ground
Voltage (V)
Connector
Terminal
E40
5
Ground
Approx. 5
PBIA9607J
ECM
Sensor
Connector
Terminal
Name
Connector
Terminal
F13
47
TP sensor
F57
1
51
Battery current sensor
F5
1
55
PSP sensor
F40
3
59
CMP sensor (PHASE) (bank 1)
F55
1
EVT control position sensor (bank 1)
F43
1
63
CMP sensor (PHASE) (bank 2)
F60
1
EVT control position sensor (bank 2)
F42
1
E10
83
APP sensor
E40
5
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