Infiniti M45 (Y34). Manual — part 430
DTC P0550 PSP SENSOR
EC-409
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EC
6.
CHECK PSP SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check harness continuity between ECM terminal 118 and PSP sensor terminal 2.
Refer to Wiring Diagram.
2.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 7.
7.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors F6, E316
●
Harness for open or short between ECM and PSP sensor
>> Repair open circuit or short to ground or short to power in harness or connectors.
8.
CHECK PSP SENSOR
Refer to
EC-409, "Component Inspection"
OK or NG
OK
>> GO TO 9.
NG
>> Replace PSP sensor.
9.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
Component Inspection
ABS002M8
POWER STEERING PRESSURE SENSOR
1.
Reconnect all harness connectors disconnected.
2.
Start engine and let it idle.
3.
Check voltage between ECM terminal 118 and ground under the
following conditions.
Removal and Installation
ABS00A7L
POWER STEERING PRESSURE SENSOR
Refer to
.
Continuity should exist.
Condition
Voltage
Steering wheel: Being turned fully.
Approximately 3.6V
Steering wheel: Not being turned.
Approximately 0.6V
PBIB0190E
EC-410
DTC P0605 ECM
DTC P0605 ECM
PFP:23710
Component Description
ABS002M9
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 Logic
ABS002MA
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 Procedure
ABS002MB
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-411, "Diagnostic Procedure"
.
With GST
Follow the procedure With CONSULT-II above.
SEF093X
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0605
0605
Engine control module
A)
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.
When the accelerator pedal depressed value reaches a throttle opening of 30 degrees or more, the throttle valve
opens to a maximum of 20 degrees by the accelerator wire.
SEF058Y
DTC P0605 ECM
EC-411
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EC
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-411, "Diagnostic Procedure"
.
With GST
Follow the procedure With CONSULT-II above.
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.
Repeat step 3 for 32 times.
5.
If 1st trip DTC is detected, go to
EC-411, "Diagnostic Procedure"
.
With GST
Follow the procedure With CONSULT-II above.
Diagnostic Procedure
ABS002MC
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
5.
Is the 1st trip DTC P0605 displayed again?
With GST
1.
Turn ignition switch ON.
2.
Select MODE 4 with GST.
3.
Touch “ERASE”.
4.
Perform DTC Confirmation Procedure.
See
5.
Is the 1st trip DTC P0605 displayed again?
Yes or No
Yes
>> GO TO 2.
No
>> INSPECTION END
SEF058Y
SEF058Y
EC-412
DTC P0605 ECM
2.
REPLACE ECM
1.
Replace ECM.
2.
Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to
BL-174, "ECM Re-Communicating Function"
3.
Perform
EC-44, "Accelerator Pedal Released Position Learning"
.
4.
Perform
EC-44, "Throttle Valve Closed Position Learning"
5.
Perform
EC-44, "Idle Air Volume Learning"
>> INSPECTION END
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