Page 1822 of 3502
![NISSAN TEANA 2003 Service Manual EC-540
[VQ]
DTC P0605 ECM
Diagnostic ProcedureBBS0051J
1. INSPECTION START
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.](/manual-img/5/57392/w960_57392-1821.png "NISSAN TEANA 2003 Service Manual EC-540
[VQ]
DTC P0605 ECM
Diagnostic ProcedureBBS0051J
1. INSPECTION START
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.")
EC-540
[VQ]
DTC P0605 ECM
Diagnostic ProcedureBBS0051J
1. INSPECTION START
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4.Perform DTC Confirmation Procedure.
See EC-538, "
DTC Confirmation Procedure" .
5. Is the 1st trip DTC P0605 displayed again?
Without CONSULT-II
1. Turn ignition switch ON.
2. Erase the Diagnostic Test Mode II (Self-diagnostic results) memory. Refer to EC-378, "
How to Set Diag-
nostic Test Mode II (Self-diagnostic Results)" .
3.Perform DTC Confirmation Procedure.
See EC-538, "
DTC Confirmation Procedure" .
4. Is the 1st trip DTC 0605 displayed again?
Ye s o r N o
Yes >> GO TO 2.
No >>INSPECTION END
2. REPLACE ECM
1. Replace ECM.
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to BL-142, "
ECM
Re-Communicating Function" .
3. Perform EC-389, "
Accelerator Pedal Released Position Learning" .
4. Perform EC-389, "
Throttle Valve Closed Position Learning" .
5. Perform EC-389, "
Idle Air Volume Learning" .
>>INSPECTION END
Page 1826 of 3502
![NISSAN TEANA 2003 Service Manual EC-544
[VQ]
DTC P1065 ECM POWER SUPPLY
4. PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”](/manual-img/5/57392/w960_57392-1825.png "NISSAN TEANA 2003 Service Manual EC-544
[VQ]
DTC P1065 ECM POWER SUPPLY
4. PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”")
EC-544
[VQ]
DTC P1065 ECM POWER SUPPLY
4. PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-II
1. Turn ignition switch ON.
2. Select “SELF DIAG RESULTS” mode with CONSULT-II.
3. Touch “ERASE”.
4.Perform DTC Confirmation Procedure.
See EC-541, "
DTC Confirmation Procedure" .
5. Is the 1st trip DTC P1065 displayed again?
Without CONSULT-II
1. Turn ignition switch ON.
2. Erase the Diagnostic Test Mode II (Self-diagnostic results) memory. Refer to EC-378, "
How to Set Diag-
nostic Test Mode II (Self-diagnostic Results)" .
3.Perform DTC Confirmation Procedure.
See EC-541, "
DTC Confirmation Procedure" .
4. Is the 1st trip DTC 1065 displayed again?
Ye s o r N o
Yes >> GO TO 5.
No >>INSPECTION END
5. REPLACE ECM
1. Replace ECM.
2. Perform initialization of NATS system and registration of all NATS ignition key IDs. Refer to BL-142, "
ECM
Re-Communicating Function" .
3. Perform EC-389, "
Accelerator Pedal Released Position Learning" .
4. Perform EC-389, "
Throttle Valve Closed Position Learning" .
5. Perform EC-389, "
Idle Air Volume Learning" .
>>INSPECTION END
Page 1839 of 3502
![NISSAN TEANA 2003 Service Manual DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-557
[VQ]
C
D
E
F
G
H
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K
L
MA
EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured](/manual-img/5/57392/w960_57392-1838.png "NISSAN TEANA 2003 Service Manual DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-557
[VQ]
C
D
E
F
G
H
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K
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MA
EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured")
DTC P1122 ELECTRIC THROTTLE CONTROL FUNCTION
EC-557
[VQ]
C
D
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F
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H
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K
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EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic ProcedureBBS00525
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body.
Refer to EC-457, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
3G/WThrottle control motor relay
power supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4LThrottle control motor
(Close)[Ignition switch: ON]
Engine: Sopped
Shift lever: D
Accelerator pedal: Released0 - 14V
5YThrottle control motor
(Open)[Ignition switch: ON]
Engine: Sopped
Shift lever: D
Accelerator pedal: Fully depressed0 - 14V
104 O Throttle control motor relay[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]0 - 1.0V
PBIB1104E
PBIB1105E
PBIB2160E
Page 1847 of 3502
![NISSAN TEANA 2003 Service Manual DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
EC-565
[VQ]
C
D
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F
G
H
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MA
EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measure](/manual-img/5/57392/w960_57392-1846.png "NISSAN TEANA 2003 Service Manual DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
EC-565
[VQ]
C
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EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measure")
DTC P1124, P1126 THROTTLE CONTROL MOTOR RELAY
EC-565
[VQ]
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EC
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic ProcedureBBS0052D
1. CHECK THROTTLE CONTROL MOTOR RELAY POWER SUPPLY CIRCUIT-I
1. Turn ignition switch OFF.
2. Check voltage between ECM terminal 104 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
3G/WThrottle control motor relay
power supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4LThrottle control motor
(Close)[Ignition switch: ON]
Engine: Sopped
Shift lever: D
Accelerator pedal: Released0 - 14V
5YThrottle control motor
(Open)[Ignition switch: ON]
Engine: Sopped
Shift lever: D
Accelerator pedal: Fully depressed0 - 14V
104 O Throttle control motor relay[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]0 - 1.0V
PBIB1104E
PBIB1105E
Voltage: Battery voltage
PBIB1171E
Page 1852 of 3502
![NISSAN TEANA 2003 Service Manual EC-570
[VQ]
DTC P1128 THROTTLE CONTROL MOTOR
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use EC](/manual-img/5/57392/w960_57392-1851.png "NISSAN TEANA 2003 Service Manual EC-570
[VQ]
DTC P1128 THROTTLE CONTROL MOTOR
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use EC")
EC-570
[VQ]
DTC P1128 THROTTLE CONTROL MOTOR
Specification data are reference values and are measured between each terminal and ground.
Pulse signal is measured by CONSULT-II.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnostic ProcedureBBS0052I
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body.
Refer to EC-457, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
3 G/WThrottle control motor relay
power supply[Ignition switch: ON]BATTERY VOLTAGE
(11 - 14V)
4LThrottle control motor
(Close)[Ignition switch: ON]
Engine: Sopped
Shift lever: D
Accelerator pedal: Released0 - 14V
5YThrottle control motor
(Open)[Ignition switch: ON]
Engine: Sopped
Shift lever: D
Accelerator pedal: Fully depressed0 - 14V
104 O Throttle control motor relay[Ignition switch: OFF]BATTERY VOLTAGE
(11 - 14V)
[Ignition switch: ON]0 - 1.0V
PBIB1104E
PBIB1105E
PBIB2160E
Page 1872 of 3502
![NISSAN TEANA 2003 Service Manual EC-590
[VQ]
DTC P1229 SENSOR POWER SUPPLY
DTC P1229 SENSOR POWER SUPPLYPFP:16119
On Board Diagnosis LogicBBS0053B
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfun](/manual-img/5/57392/w960_57392-1871.png "NISSAN TEANA 2003 Service Manual EC-590
[VQ]
DTC P1229 SENSOR POWER SUPPLY
DTC P1229 SENSOR POWER SUPPLYPFP:16119
On Board Diagnosis LogicBBS0053B
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfun")
EC-590
[VQ]
DTC P1229 SENSOR POWER SUPPLY
DTC P1229 SENSOR POWER SUPPLYPFP:16119
On Board Diagnosis LogicBBS0053B
This self-diagnosis has the one trip detection logic.
FAIL-SAFE MODE
When the malfunction is detected, ECM enters fail-safe mode and the MI lights up.
DTC Confirmation ProcedureBBS0053C
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 10V at idle.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. If DTC is detected, go to EC-592, "
Diagnostic Procedure" .
WITHOUT CONSULT-II
1. Start engine and let it idle for 1 second.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
4. If DTC is detected, go to EC-592, "
Diagnostic Procedure" .
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1229
1229Sensor power supply
circuit shortECM detects a voltage of power source for
sensor is excessively low or high.
Harness or connectors
(APP sensor 1 circuit is shorted.)
(PSP sensor circuit is shorted.)
(Refrigerant pressure sensor circuit is
shorted.)
Accelerator pedal position sensor
Power steering pressure sensor
Refrigerant pressure sensor
Engine operation condition in fail-safe mode
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5 degrees) by the return
spring.
SEF058Y
Page 1874 of 3502
![NISSAN TEANA 2003 Service Manual EC-592
[VQ]
DTC P1229 SENSOR POWER SUPPLY
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/out](/manual-img/5/57392/w960_57392-1873.png "NISSAN TEANA 2003 Service Manual EC-592
[VQ]
DTC P1229 SENSOR POWER SUPPLY
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/out")
EC-592
[VQ]
DTC P1229 SENSOR POWER SUPPLY
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic ProcedureBBS0053E
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten two ground screws on the body.
Refer to EC-457, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL
NO.WIRE
COLORITEM CONDITION DATA (DC Voltage)
49 BR/WSensor power supply
(Refrigerant pressure sensor)[Ignition switch: ON]Approximately 5V
68 LSensor power supply
(PSP sensor)[Ignition switch: ON]Approximately 5V
82 BSensor ground
(APP sensor 1)[Engine is running]
Warm-up condition
Idle speedApproximately 0V
83 GSensor ground
(APP sensor 2)[Engine is running]
Warm-up condition
Idle speedApproximately 0V
90 R/WSensor power supply
(APP sensor 1)[Ignition switch: ON]Approximately 5V
91 PSensor power supply
(APP sensor 2)[Ignition switch: ON]Approximately 5V
98 LGAccelerator pedal position
sensor 2[Ignition switch: ON]
Engine: Stopped
Accelerator pedal: Fully released0.28 - 0.48V
[Ignition switch: ON]
Engine: Stopped
Accelerator pedal: Fully depressedMore than 2.0V
106 WAccelerator pedal position
sensor 1[Ignition switch: ON]
Engine: Stopped
Accelerator pedal: Fully released0.65 - 0.87V
[Ignition switch: ON]
Engine: Stopped
Accelerator pedal: Fully depressedMore than 4.3V
PBIB2160E
Page 1875 of 3502
![NISSAN TEANA 2003 Service Manual DTC P1229 SENSOR POWER SUPPLY
EC-593
[VQ]
C
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EC
2. CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT-I
1. Disconnect accelerator pedal position (APP) sensor harness](/manual-img/5/57392/w960_57392-1874.png "NISSAN TEANA 2003 Service Manual DTC P1229 SENSOR POWER SUPPLY
EC-593
[VQ]
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EC
2. CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT-I
1. Disconnect accelerator pedal position (APP) sensor harness")
DTC P1229 SENSOR POWER SUPPLY
EC-593
[VQ]
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EC
2. CHECK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT-I
1. Disconnect accelerator pedal position (APP) sensor harness
connector.
2. Turn ignition switch ON.
3. Check voltage between APP sensor terminal 2 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 7.
NG >> GO TO 3.
3. CHEK ACCELERATOR PEDAL POSITION SENSOR 1 POWER SUPPLY CIRCUIT-II
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between APP sensor terminal 2 and ECM terminal 90.
Refer to Wiring Diagram.
OK or NG
OK >> GO TO 5.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E206, M13
Harness for open or short between APP sensor and ECM
>> Repair open circuit in harness or connectors.
5. CHECK SENSOR POWER SUPPLY CIRCUITS
Check harness for short to power and short to ground, between the following terminals.
OK or NG
OK >> GO TO 6.
NG >> Repair short to ground or short to power in harness or connectors.
PBIB2467E
Voltage: Approximately 5V
PBIB2478E
Continuity should exist.
ECM terminal Sensor terminal Reference Wiring Diagram
90 APP sensor terminal 2EC-591
49 Refrigerant pressure sensor terminal 1EC-749
68 PSP sensor terminal 1EC-534