Infiniti I30 (A33). Manual — part 47
Wiring Diagram — AT — TPS
NHAT0074
MAT973A
SAT310K
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1705 THROTTLE POSITION SENSOR
Wiring Diagram — AT — TPS
AT-185
Diagnostic Procedure
NHAT0075
1
CHECK DTC WITH ECM
I
Check P code with CONSULT-II “ENGINE”.
Turn ignition switch ON and select “SELF DIAGNOSTIC RESULTS” mode for “ENGINE” with CONSULT-II.
Refer to EC-82, “Malfunction Indicator Lamp (MIL)”.
OK or NG
OK (with CONSULT-II)
©
GO TO 2.
OK (without CONSULT-
II)
©
GO TO 3.
NG
©
Check throttle position sensor circuit for engine control. Refer to EC-176, “DTC P0120
Throttle Position Sensor”.
2
CHECK INPUT SIGNAL (With CONSULT-II)
With CONSULT-II
1. Turn ignition switch to ON position.
(Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Read out the value of “THRTL POS SEN”.
Voltage:
Fully-closed throttle:
Approximately 0.5V
Fully-open throttle:
Approximately 4V
SAT614J
OK or NG
OK
©
GO TO 4.
NG
©
Check harness for short or open between ECM and TCM regarding throttle position sen-
sor circuit. (Main harness)
DTC P1705 THROTTLE POSITION SENSOR
Diagnostic Procedure
AT-186
3
CHECK INPUT SIGNAL (Without CONSULT-II)
Without CONSULT-II
1. Turn ignition switch to ON position. (Do not start engine.)
2. Check voltage between TCM terminals 41 and 42 while accelerator pedal is depressed slowly.
SAT349JA
Voltage:
Fully-closed throttle valve:
Approximately 0.5V
Fully-open throttle valve:
Approximately 4V
(Voltage rises gradually in response to throttle position.)
OK or NG
OK
©
GO TO 6.
NG
©
Check harness for short or open between ECM and TCM regarding throttle position sen-
sor circuit. (Main harness)
4
CHECK THROTTLE POSITION SWITCH CIRCUIT (With CONSULT-II)
With CONSULT-II
1. Turn ignition switch to ON position.
(Do not start engine.)
2. Select “TCM INPUT SIGNALS” in “DATA MONITOR” mode for “A/T” with CONSULT-II.
3. Apply vacuum to the throttle opener, then check the following. Refer to steps 1 and 2 of “Preparation”, “TCM SELF-
DIAGNOSTIC PROCEDURE (No Tools)”, AT-50.
4. Read out “CLOSED THL/SW” and “W/O THRL/P-SW” depressing and releasing accelerator pedal.
Check the signal of throttle position switch is indicated properly.
MTBL0011
SAT646J
OK or NG
OK
©
GO TO 8.
NG
©
GO TO 5.
GI
MA
EM
LC
EC
FE
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1705 THROTTLE POSITION SENSOR
Diagnostic Procedure (Cont’d)
AT-187
5
DETECT MALFUNCTIONING ITEM
Check the following items:
I
Throttle position switch.
a. Closed throttle position switch (idle position)
i. Check continuity between terminals 4 and 5.
SAT634J
ii. To adjust closed throttle position switch, refer to EC-109, “Basic Inspection”.
b. Wide open throttle position switch
i. Check continuity between terminals 5 and 6.
SAT635J
I
Harness for short or open between ignition switch and throttle position switch (Main harness)
I
Harness for short or open between throttle position switch and TCM (Main harness)
OK or NG
OK
©
GO TO 8.
NG
©
Repair or replace damaged parts.
DTC P1705 THROTTLE POSITION SENSOR
Diagnostic Procedure (Cont’d)
AT-188
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