Infiniti I30 (A33). Manual — part 282
4
CHECK IGNITION TIMING AND ENGINE IDLE SPEED
Check the following items. Refer to “Basic Inspection”, EC-109.
MTBL0616
Models with CONSULT-II
©
GO TO 5.
Models without CON-
SULT-II
©
GO TO 6.
5
CHECK THROTTLE POSITION SWITCH
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch “OFF”.
3. Turn ignition switch “ON”.
4. Select “DATA MONITOR” mode with CONSULT-II.
5. Check indication of “CLSD THL/P SW” under the following conditions.
Measurement must be made with throttle position switch installed in vehicle.
MTBL0355
OK or NG
OK
©
GO TO 8.
NG
©
GO TO 7.
6
CHECK THROTTLE POSITION SWITCH
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch “OFF”.
3. Disconnect closed throttle position switch harness connector.
4. Check continuity between closed throttle position switch terminals 4 and 5 under the following conditions.
Resistance measurement must be made with throttle position switch installed in vehicle.
SEC010C
OK or NG
OK
©
GO TO 9.
NG
©
GO TO 7.
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DTC P0510 CLOSED THROTTLE POSITION SWITCH
Diagnostic Procedure (Cont’d)
EC-443
7
ADJUST THROTTLE POSITION SWITCH
Check the following items. Refer to “Basic Inspection”, EC-109.
MTBL0595
Is it possible to adjust closed throttle position switch?
Yes or No
Yes (With CONSULT-II)
©
GO TO 8.
Yes (Without CONSULT-
II)
©
GO TO 9.
No
©
Replace throttle position switch.
8
CHECK THROTTLE POSITION SENSOR
With CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Stop engine (ignition switch OFF).
3. Turn ignition switch ON.
4. Select “DATA MONITOR” mode with CONSULT-II.
5. Check voltage of “THRTL POS SEN” under the following conditins.
Voltage measurement must be made with throttle position sensor installed in vehicle.
MTBL0230
OK or NG
OK
©
GO TO 10.
NG
©
Replace throttle position sensor.
DTC P0510 CLOSED THROTTLE POSITION SWITCH
Diagnostic Procedure (Cont’d)
EC-444
9
CHECK THROTTLE POSITION SENSOR
Without CONSULT-II
1. Start engine and warm it up to normal operating temperature.
2. Stop engine (ignition switch OFF).
3. Turn ignition switch ON.
4. Check voltage between ECM terminal 91 (Throttle position sensor signal) and ground.
Voltage measurement must be made with throttle position sensor installed in vehicle.
SEF348X
OK or NG
OK
©
GO TO 10.
NG
©
Replace throttle position sensor.
10
CHECK INTERMITTENT INCIDENT
Refer to “TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT”, EC-144.
©
INSPECTION END
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DTC P0510 CLOSED THROTTLE POSITION SWITCH
Diagnostic Procedure (Cont’d)
EC-445
System Description
NHEC0264
This circuit line (LAN) is used to control the smooth shifting up and down of A/T during the hard acceleration/
deceleration.
Pulse signals are exchanged between ECM and TCM (Transmission Control Module).
Be sure to erase the malfunction information such as DTC not only in TCM but also ECM after the A/T
related repair.
On Board Diagnosis Logic
NHEC0266
Malfunction is detected when ECM receives incorrect voltage from
TCM (Transmission Control Module) continuously.
Possible Cause
NHEC0517
I
Harness or connectors
[The communication line circuit between ECM and TCM
(Transmission Control Module) is open or shorted.]
I
TCM
I
Dead (Weak) battery
SEF058Y
DTC Confirmation Procedure
NHEC0267
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 bat-
tery voltage is more than 10.5V at idle.
WITH CONSULT-II
NHEC0267S01
1)
Turn ignition switch “ON”.
2)
Select “DATA MONITOR” mode with CONSULT-II.
3)
Start engine and let it idle for at least 2 seconds.
4)
If DTC is detected, go to “Diagnostic Procedure”, EC-448.
DTC P0600 A/T COMMUNICATION LINE
System Description
EC-446
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