Infiniti Q45 (FY33). Manual — part 89
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SEF046TA
PBR455D
SBR635E
SBR638E
SBR574E
CONSULT-II Inspection Procedure for TAC
Module
SELF-DIAGNOSIS PROCEDURE
1) Turn ignition switch OFF.
2) Connect CONSULT-II to Data Link Con-
nector.
1) Start engine.
2) Drive vehicle over 30 km/h (19 MPH)
for at least one minute.
1) Stop vehicle with engine running
and touch “START” on CON-
SULT-II screen.
2) Touch “TCS”.
3) Touch “SELF-DIAG
RESULTS”.
I
Does the screen show the detected
malfunction?
Yes
E
No
SLIP INDICATOR, TCS
OFF INDICATOR
INSPECTION
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Check SLIP indicator, TCS
OFF indicator and the cir-
cuit and repair if neces-
sary.
MALFUNCTION REPAIR
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Make the necessary repairs following the
diagnostic procedures.
Start engine and drive vehicle at 30 km/h
(19 MPH) or more for more than one
minute.
Turn ignition switch “OFF” so self-diagnos-
tic system is ready for memory erasure.
After repairing the malfunctions, start
engine. Then erase the self-diagnostic
results stored in the control unit by touch-
ing “ERASE”.
Are the self-diagnostic results erased?
Yes
E
No
Go to MALFUNCTION
REPAIR.
Check SLIP indicator and TCS OFF indi-
cator for deactivation after driving vehicle
over 30 km/h (19 MPH) for at least one
minute.
Do the SLIP indicator and TCS OFF
indicator activate?
No
E
Yes
Go to
above.
End
Note: “SELF-DIAG RESULTS” screen shows the detected malfunction and
the times of ignition switch ON and OFF after it occurred.
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TROUBLE DIAGNOSES
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BR-73
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SELF-DIAGNOSTIC RESULTS MODE
Display
Self-diagnostic items
Malfunction is detected when ...
Diagnostic
procedure
THROTTLE POSI SEN
Throttle position sensor cir-
cuit
I
The throttle position sensor circuit is open or
shorted.
(An abnormally high or low voltage is
entered.)
14
THROTTLE POSI SEN2
Secondary throttle position
sensor circuit
I
The secondary throttle position sensor circuit
is open or shorted.
(An abnormally high or low voltage is
entered.)
15
THRTL POS/S-2 SIG
Secondary throttle valve
operating signal circuit
I
TCS control unit is in fail-safe condition or
harness is abnormal.
I
Faulty ABS/TCS control unit
16
THROTTLE ACTUATOR
Throttle motor circuit (Opera-
tion and open circuit check)
I
The throttle motor does not operate normally
when the TCS is operating.
17
THROTTLE MOTOR
Throttle motor circuit (Short
circuit check)
I
The throttle motor circuit is shorted.
17
THROTTLE MOTOR RLY
[SHORT] (
⋅
a)
Throttle motor relay circuit
(Short)
I
The throttle motor relay is shorted.
18
THROTTLE MOTOR RLY
[OPEN] (
⋅
b)
Throttle motor relay circuit
(Open)
I
The throttle motor relay is open.
18
THRTL/V RETURN SPR
Secondary throttle valve
return spring broken
I
Secondary throttle valve does not fully open
when current is not supplied to the motor.
20
ENGINE START SIG
Engine start signal circuit
I
START signal is not properly input due to
short-circuit.
21
NEUTRAL POSI SW
Park/Neutral position switch
circuit
I
Park/Neutral position switch circuit is open.
I
Park/Neutral position switch circuit is shorted.
22
TH P/S PWR SUPPLY
Power supply circuit
(for sensor)
I
Power supply circuit for secondary throttle
position sensor is open.
19
NOTE:
Appears on display when self-diagnosis is performed with self-diagnostic check terminal (terminal No.
9 of data link connector) shorted to ground.
TROUBLE DIAGNOSES
CONSULT-II Inspection Procedure for TAC
Module (Cont’d)
BR-74
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PBR455D
DATA MONITOR PROCEDURE
SBR635E
SBR640E
SBR571E
1) Turn ignition switch OFF.
2) Connect CONSULT-II to Data Link Connector.
3) Turn ignition switch ON.
1) Touch “START” on CONSULT-II screen.
2) Touch “TCS”.
3) Touch “DATA MONITOR”.
1) Touch “SETTING” on “SELECT MONITOR ITEM” screen.
2) Touch “START” on “SELECT MONITOR ITEM”.
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TROUBLE DIAGNOSES
CONSULT-II Inspection Procedure for TAC
Module (Cont’d)
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BR-75
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PBR455D
ACTIVE TEST PROCEDURE
I
When conducting Active test, vehicle must be stationary.
SBR635E
SBR636E
SBR575E
SBR639E
1) Turn ignition switch OFF.
2) Connect CONSULT-II to Data Link Connector.
3) Start engine.
1) Touch “START” on CONSULT-II screen.
2) Touch “TCS”.
3) Touch “ACTIVE TEST”.
1) Select active test item by touching screen.
2) Touch “START”.
1) Set motor throttle target position to “0°” (throttle fully closed).
Approx. “2°” (motor throttle position) will appear on CONSULT-II display.
1) Following motor throttle target position setting, depress accelerator
pedal to ensure that engine speed is limited.
2) Ensure that engine speed is limited in response to different throttle posi-
tions.
TROUBLE DIAGNOSES
CONSULT-II Inspection Procedure for TAC
Module (Cont’d)
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BR-76
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