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DTC P0550 PSP SENSOR
EC-535
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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 ProcedureBBS0051E
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)
12 WPower steering pressure
sensor[Engine is running]
Steering wheel: Being turned0.5 - 4.5V
[Engine is running]
Steering wheel: Not being turned0.4 - 0.8V
67 B Sensor ground[Engine is running]
Warm-up condition
Idle speedApproximately 0V
68 LSensor power supply
(PSP sensor)[Ignition switch: ON]Approximately 5V
PBIB2160E
Page 1818 of 3502
![NISSAN TEANA 2003 Service Manual EC-536
[VQ]
DTC P0550 PSP SENSOR
2. CHECK PSP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect power steering pressure (PSP) sensor harness con-
nector.
2. Turn ignition switch ON.
3. Check voltage between NISSAN TEANA 2003 Service Manual EC-536
[VQ]
DTC P0550 PSP SENSOR
2. CHECK PSP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect power steering pressure (PSP) sensor harness con-
nector.
2. Turn ignition switch ON.
3. Check voltage between](/manual-img/5/57392/w960_57392-1817.png)
EC-536
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DTC P0550 PSP SENSOR
2. CHECK PSP SENSOR POWER SUPPLY CIRCUIT
1. Disconnect power steering pressure (PSP) sensor harness con-
nector.
2. Turn ignition switch ON.
3. Check voltage between PSP sensor terminal 1 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
3. CHECK PSP SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Check harness continuity between ECM terminal 67 and PSP sensor terminal 3.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK PSP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Disconnect ECM harness connector.
2. Check harness continuity between ECM terminal 12 and PSP sensor terminal 2.
Refer to Wiring Diagram.
3. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK PSP SENSOR
Refer to EC-537, "
Component Inspection" .
OK or NG
OK >> GO TO 6.
NG >> Replace PSP sensor.
PBIB2116E
Voltage: Approximately 5V
PBIB0085E
Continuity should exist.
Continuity should exist.
Page 1819 of 3502
DTC P0550 PSP SENSOR
EC-537
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6. CHECK INTERMITTENT INCIDENT
Refer to EC-450, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>>INSPECTION END
Component InspectionBBS0051F
POWER STEERING PRESSURE SENSOR
1. Reconnect all harness connectors disconnected.
2. Start engine and let it idle.
3. Check voltage between ECM terminal 12 and ground under the
following conditions.
Removal and InstallationBBS007TO
POWER STEERING PRESSURE SENSOR
Refer to PS-39, "HYDRAULIC LINE" .
Condition Voltage
Steering wheel: Being turned 0.5 - 4.5V
Steering wheel: Not being turned 0.4 - 0.8V
MBIB0126E
Page 1820 of 3502
![NISSAN TEANA 2003 Service Manual EC-538
[VQ]
DTC P0605 ECM
DTC P0605 ECMPFP:23710
Component DescriptionBBS0051G
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls t NISSAN TEANA 2003 Service Manual EC-538
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DTC P0605 ECM
DTC P0605 ECMPFP:23710
Component DescriptionBBS0051G
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls t](/manual-img/5/57392/w960_57392-1819.png)
EC-538
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DTC P0605 ECM
DTC P0605 ECMPFP:23710
Component DescriptionBBS0051G
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
On Board Diagnosis LogicBBS0051H
This self-diagnosis has one or two trip detection logic.
FAIL-SAFE MODE
ECM enters fail-safe mode when the malfunction A is detected.
DTC Confirmation ProcedureBBS0051I
Perform PROCEDURE FOR MALFUNCTION A first. If the 1st trip DTC cannot be confirmed, perform
PROCEDURE FOR MALFUNCTION B. If there is no malfunction on PROCEDURE FOR MALFUNCTION
B, perform PROCEDURE FOR MALFUNCTION C.
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.
PROCEDURE FOR MALFUNCTION A
With CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. If 1st trip DTC is detected, go to EC-540, "
Diagnostic Procedure"
.
PBIB1164E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0605
0605Engine control moduleA) ECM calculation function is malfunctioning.
ECM B) ECM EEP-ROM system is malfunctioning.
C) ECM self shut-off function is malfunctioning.
Detected items Engine operation condition in fail-safe mode
Malfunction A
ECM stops the electric throttle control actuator control, throttle valve is maintained at a fixed opening (approx. 5
degrees) by the return spring.
ECM deactivates ASCD operation.
SEF058Y
Page 1821 of 3502
![NISSAN TEANA 2003 Service Manual DTC P0605 ECM
EC-539
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Without CONSULT-II
1. Turn ignition switch ON.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test NISSAN TEANA 2003 Service Manual DTC P0605 ECM
EC-539
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Without CONSULT-II
1. Turn ignition switch ON.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Perform Diagnostic Test](/manual-img/5/57392/w960_57392-1820.png)
DTC P0605 ECM
EC-539
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Without CONSULT-II
1. Turn ignition switch ON.
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 1st trip DTC is detected, go to EC-540, "
Diagnostic Procedure" .
PROCEDURE FOR MALFUNCTION B
With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Turn ignition switch OFF, wait at least 10 seconds, and then turn
ON.
4. If 1st trip DTC is detected, go to EC-540, "
Diagnostic Procedure"
.
Without CONSULT-II
1. Turn ignition switch ON and wait at least 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 1st trip DTC is detected, go to EC-540, "
Diagnostic Procedure" .
PROCEDURE FOR MALFUNCTION C
With CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Turn ignition switch OFF, wait at least 10 seconds and then turn
ON.
4. Turn ignition switch ON and wait at least 1 second.
5. Repeat step 3 for 32 times.
6. If 1st trip DTC is detected, go to EC-540, "
Diagnostic Procedure"
.
Without CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Repeat step 1 to 2 for 32 times.
4. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
5. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
6. If 1st trip DTC is detected, go to EC-540, "
Diagnostic Procedure" .
SEF058Y
SEF058Y
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”.
NISSAN TEANA 2003 Service Manual EC-540
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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)
EC-540
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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 1823 of 3502
![NISSAN TEANA 2003 Service Manual DTC P1065 ECM POWER SUPPLY
EC-541
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DTC P1065 ECM POWER SUPPLYPFP:23710
Component DescriptionBBS0051K
Battery voltage is supplied to the ECM even when the ignition switc NISSAN TEANA 2003 Service Manual DTC P1065 ECM POWER SUPPLY
EC-541
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DTC P1065 ECM POWER SUPPLYPFP:23710
Component DescriptionBBS0051K
Battery voltage is supplied to the ECM even when the ignition switc](/manual-img/5/57392/w960_57392-1822.png)
DTC P1065 ECM POWER SUPPLY
EC-541
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DTC P1065 ECM POWER SUPPLYPFP:23710
Component DescriptionBBS0051K
Battery voltage is supplied to the ECM even when the ignition switch
is turned OFF for the ECM memory function of the DTC memory, the
air-fuel ratio feedback compensation value memory, the idle air vol-
ume learning value memory, etc.
On Board Diagnosis LogicBBS0051L
DTC Confirmation ProcedureBBS0051M
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.
WITH CONSULT-II
1. Turn ignition switch ON and wait at least 1 second.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and let it idle for 1 second.
4. Turn ignition switch OFF, wait at least 10 seconds, and then turn
ON.
5. Repeat steps 3 and 4 for 4 times.
6. If 1st trip DTC is detected, go to EC-543, "
Diagnostic Procedure"
.
WITHOUT CONSULT-II
1. Turn ignition switch ON and wait at least 1 seconds.
2. Start engine and let it idle for 1 second.
3. Turn ignition switch OFF, wait at least 10 seconds, and then turn ON.
4. Repeat steps 2 to 3 for 4 times.
5. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
6. Perform Diagnostic Test Mode II (Self-diagnostic results) with ECM.
7. If 1st trip DTC is detected, go to EC-543, "
Diagnostic Procedure" .
PBIB1164E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P1065
1065ECM power supply cir-
cuitECM back-up RAM system does not function
properly.
Harness or connectors
[ECM power supply (back-up) circuit is
open or shorted.]
ECM
SEF058Y
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EC-542
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DTC P1065 ECM POWER SUPPLY
Wiring DiagramBBS0051N
TBWM0620E