Infiniti QX4 (R50). Manual — part 574
Terminal
No.
Item
Condition
Judgement standard
31
Transfer fluid tempera-
ture sensor
&
At 20°C (68°F)
Approx. 1.5V
At 80°C (176°F)
Approx. 0.5V
32
ABS signal
When moving, use the CONSULT-II
pulse frequency measuirng func-
tion.*2
CAUTION:
Connect the diagnosis data link
cable to the vehicle diagnosis con-
nector.
*2: A circuit tester cannot be used to
test this item.
Refer to the illustration
(SMT973D) at the end of
this section.
33
Transfer shift relay
(High)
While actuator is operating from “4H”
to “4LO”
Battery voltage
Actuator does not operate.
Approx. 0V
34
Clutch pressure switch
4WD shift switch is set to “AUTO” or
“4H”, then A/T selector lever is set to
“D” position. (wait detection system:
OFF)
Battery voltage
4WD shift switch is set to “2WD”,
“AUTO” or “4H”, then A/T selector
lever is set to “D” position. (wait
detection system: ON)
Approx. 0V
35
Line pressure switch
4WD shift switch is set to “2WD”,
“AUTO” or “4H”, then A/T selector
lever is set to “D” position.
Battery voltage
—
Approx. 0V
36
CONSULT-II (RX)
—
—
—
37
Tachometer
—
Refer to EC-127, “ECM
Inspection Table”.
38
Front revolution sensor
4WD shift switch is set to “4H” posi-
tion. A/T selector lever is set to “D”
position.
Approx. 1V [30 km/h (19
MPH)]
Voltage rises in
response to vehicle
speed.
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Transfer Control Unit Terminals and Reference Value (Cont’d)
TF-58
Terminal
No.
Item
Condition
Judgement standard
39
ECM (Throttle position
sensor)
&
Throttle valve is fully open.
Approx. 0.5V
Throttle valve is closed.
Approx. 4.2V
40
ATP switch
A/T selector lever is set to “P” posi-
tion.
Battery voltage
A/T selector lever is set to any posi-
tion other than “P”.
Less than 1V
41
Transfer motor relay
monitor
Transfer motor relay is ON.
Battery voltage
Transfer motor relay is OFF.
Less than 1V
42
Transfer shift relay
(LOW)
While actuator is operating from
“4LO” to “4H” position
Battery voltage
Actuator does not operate.
Approx. 0V
43
Wait detection switch
4WD shift switch is set to any posi-
tion other than “4LO”.
Battery voltage
4WD shift switch is set to “4LO” posi-
tion.*3
Less than 1V
44
Transfer 4LO actuator
switch
4WD shift switch is set to any posi-
tion other than “4LO”. (Actuator: High
position)
Battery voltage
4WD shift switch is set to “4LO” posi-
tion. (Actuator: Low position)
Less than 1V
45
Ground
—
—
—
46
—
—
—
—
47
Power supply (memory
back up)
&
—
Battery voltage
48
CONSULT-II (TX)
—
—
—
*3: While wait detection system is operating, terminal 43 exists battery voltage.
GI
MA
EM
LC
EC
FE
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Transfer Control Unit Terminals and Reference Value (Cont’d)
TF-59
SMT973D
TROUBLE DIAGNOSIS — GENERAL DESCRIPTION
Transfer Control Unit Terminals and Reference Value (Cont’d)
TF-60
Diagnostic Procedure
NBTF0019
1
FRONT REVOLUTION SENSOR
Refer to “Front Revolution Sensor”, “COMPONENT INSPECTION”, TF-112.
OK or NG
OK
©
GO TO 3.
NG
©
GO TO 2.
2
CHECK CONTINUITY
Check the following.
I
Continuity of transfer sub-harness
Refer to “Transfer Sub-harness”, “COMPONENT INSPECTION”, TF-113.
OK or NG
OK
©
Repair or replace front revolution sensor.
NG
©
Repair or replace front revolution sensor and transfer sub-harness.
3
CHECK INPUT SIGNAL
WITH CONSULT-II
©
GO TO 4.
WITHOUT CONSULT-II
©
GO TO 5.
GI
MA
EM
LC
EC
FE
AT
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
VEHICLE SPEED SENSOR (FRONT REVOLUTION SENSOR)
Diagnostic Procedure
TF-61
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст