Infiniti QX4 (R50). Manual — part 25
TCM TERMINALS AND REFERENCE VALUE
NBAT0185S01
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
10
W/R
Power source
When turning ignition switch to “ON”.
Battery volt-
age
When turning ignition switch to “OFF”.
0V
19
W/R
Power source
Same as No. 10
25
B
Ground
—
0V
28
R/Y
Power source
(Memory back-up)
or
When turning ignition switch to “OFF”.
Battery volt-
age
When turning ignition switch to “ON”.
Battery volt-
age
48
B
Ground
—
0V
Diagnostic Procedure
NBAT0223
1
CHECK TCM POWER SOURCE STEP 1
1. Turn ignition switch to ON position.
(Do not start engine.)
2. Check voltage between TCM terminals 10, 19, 28 and ground.
SAT611J
OK or NG
OK
©
GO TO 2.
NG
©
GO TO 3.
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
TROUBLE DIAGNOSIS FOR POWER SUPPLY
Wiring Diagram — AT — MAIN (Cont’d)
AT-97
2
CHECK TCM POWER SOURCE STEP 2
1. Turn ignition switch to OFF position.
2. Check voltage between TCM terminal 28 and ground.
SAT612JC
OK or NG
OK
©
GO TO 4.
NG
©
GO TO 3.
3
DETECT MALFUNCTIONING ITEM
Check the following items:
I
Harness for short or open between ignition switch and TCM terminals 10, 19 and 28 (Main harness)
I
Ignition switch and 10A or 7.5A fuse [No. 18 or 24, located in the fuse block (J/B)]
Refer to EL-9, “Schematic”.
OK or NG
OK
©
GO TO 4.
NG
©
Repair or replace damaged parts.
4
CHECK TCM GROUND CIRCUIT
1. Turn ignition switch to OFF position.
2. Disconnect TCM harness connector.
3. Check continuity between TCM terminals 25, 48 and ground. Refer to wiring diagram — AT — MAIN.
Continuity should exist.
If OK, check harness for short to ground and short to power.
OK or NG
OK
©
INSPECTION END
NG
©
Repair open circuit or short to ground or short to power in harness or connectors.
TROUBLE DIAGNOSIS FOR POWER SUPPLY
Diagnostic Procedure (Cont’d)
AT-98
SAT136K
Description
NBAT0028
I
The PNP switch assemble includes a transmission range
switch.
I
The transmission range switch detects the selector position
and sends a signal to the TCM.
TCM TERMINALS AND REFERENCE VALUE
NBAT0028S02
Remarks: Specification data are reference values.
Terminal
No.
Wire color
Item
Condition
Judgement
standard
(Approx.)
26
G
PNP switch “1”
position
When setting selector lever to “1” position.
Battery volt-
age
When setting selector lever to other positions.
0V
27
G/W
PNP switch “2”
position
When setting selector lever to “2” position.
Battery volt-
age
When setting selector lever to other positions.
0V
34
L
PNP switch “D”
position
When setting selector lever to “D” position.
Battery volt-
age
When setting selector lever to other positions.
0V
35
Y
PNP switch “R”
position
When setting selector lever to “R” position.
Battery volt-
age
When setting selector lever to other positions.
0V
36
P
PNP switch “N” or
“P” position
When setting selector lever to “N” or “P” posi-
tion.
Battery volt-
age
When setting selector lever to other positions.
0V
ON BOARD DIAGNOSIS LOGIC
NBAT0028S03
Diagnostic trouble code
Malfunction is detected when ...
Check item (Possible cause)
: PNP SW/CIRC
TCM does not receive the correct volt-
age signal from the switch based on the
gear position.
I
Harness or connectors
(The PNP switch circuit is open or
shorted.)
I
PNP switch
: P0705
GI
MA
EM
LC
EC
FE
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0705 PARK/NEUTRAL POSITION SWITCH
Description
AT-99
SAT014K
SAT020K
DIAGNOSTIC TROUBLE CODE (DTC) CONFIRMATION
PROCEDURE
NBAT0028S01
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DIAGNOSTIC TROUBLE CODE CONFIRMATION PROCE-
DURE” has been previously conducted, always turn ignition
switch “OFF” and wait at least 5 seconds before conducting
the next test.
After the repair, perform the following procedure to confirm the
malfunction is eliminated.
With CONSULT-II
1)
Turn ignition switch “ON”.
2)
Select “DATA MONITOR” mode for “ENGINE” with CONSULT-
II.
3)
Start engine and maintain the following conditions for at least
5 consecutive seconds.
VHCL SPEED SE: 10 km/h (6 MPH) or more
THRTL POS SEN: More than 1.3V
Selector lever: D position (OD “ON” or “OFF”)
With GST
Follow the procedure “With CONSULT-II”.
DTC P0705 PARK/NEUTRAL POSITION SWITCH
Description (Cont’d)
AT-100
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст