Infiniti F50. Manual — part 441
DTC P0550 PSP SENSOR
EC-405
C
D
E
F
G
H
I
J
K
L
M
A
EC
9.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
EC-406
DTC P0550 PSP SENSOR
Component Inspection
EBS00MGH
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.
Condition
Voltage
Steering wheel is being turned fully.
Approximately 3.6V
Steering wheel is not being turned.
Approximately 0.6V
PBIB0190E
DTC P0605 ECM
EC-407
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P0605 ECM
PFP:23710
Component Description
EBS00MGI
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
EBS00MGJ
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
EBS00MGK
Perform “PROCEDURE FOR MALFUNCTION A” first. If the 1st trip DTC cannot be confirmed, perform
“PROCEDURE FOR MALFUNCTION B”. If there is no problem 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-408, "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
EC-408
DTC P0605 ECM
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-408, "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-408, "Diagnostic Procedure"
.
With GST
Follow the procedure “With CONSULT-II” above.
Diagnostic Procedure
EBS00MGL
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
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