Infiniti M45 (Y34). Manual — part 50
TROUBLE DIAGNOSIS
AT-85
D
E
F
G
H
I
J
K
L
M
A
B
AT
*: Parts behind Drum Support is impossible to perform inspection by disassembly.
Engine does not
start in “N” or “P”
position.
Refer to
"Engine Cannot Be
Started In “P” or “N”
Position"
ON vehicle
1. Ignition switch and starter
2. Control linkage adjustment
3. PNP switch
Engine starts in
positions other than
“N” or “P”.
ON vehicle
1. Ignition switch and starter
2. Control linkage adjustment
3. PNP switch
Engine stall.
ON vehicle
1. Fluid level and state
2. Engine speed signal
3. Turbine revolution sensor
4. Torque converter clutch solenoid valve
5. CAN communication line
6. Control valve assembly
OFF vehicle
7. Torque converter (ATF condition “NG” only. Refer to
Engine stalls when
select lever shifted
“N”
→
“D”, “R”.
ON vehicle
1. Fluid level and state
2. Engine speed signal
3. Turbine revolution sensor
4. Torque converter clutch solenoid valve
5. CAN communication line
6. Control valve assembly
OFF vehicle
7. Torque converter (ATF condition “NG” only. Refer to
Engine speed does
not return to idle.
Refer to
"Engine Speed
Does Not Return to
Idle"
ON vehicle
1. Fluid level and state
2. ATF pressure switch 5 and direct clutch solenoid valve
3. ATF pressure switch 1 and front brake solenoid valve
4. Accelerator pedal position sensor
5. Vehicle speed sensor A/T and vehicle speed sensor MTR
,
6. CAN communication line
7. Control valve assembly
OFF vehicle
8. Front brake [brake band (ATF condition “NG” only. Refer to
9. Direct clutch (ATF condition “NG” only. Refer to
Symptom
Condition
Diagnostic Item
Reference page
AT-86
TROUBLE DIAGNOSIS
TCM Input/Output Signal Reference Values
ACS004I0
TCM TERMINAL CONNECTOR LAYOUT
TCM INSPECTION TABLE
Data are reference value and are measured between each terminal and ground.
SCIA0495E
Terminal
No.
Wire
color
Item
Condition
Data (Approx.)
1
B/Y
Line pressure
solenoid valve
After warming up the engine, release your foot from the
accelerator pedal.
2.0V
After warming up the engine, press the accelerator pedal all
the way down.
0.7V
2
W
Power supply
–
Battery voltage
(A/T PV IGN
relay)
Measure 3 seconds after switching OFF the ignition switch.
0V
3
W
Power supply (A/T
PV IGN relay)
–
Battery voltage
Measure 3 seconds after switching OFF the ignition switch.
0V
4
P/L
SEL3 (ATF pres-
sure switch 3)
–
–
5
B
Ground
Always
0V
6
L
CAN H
–
–
7
R
CAN L
–
–
8
B/R
A/T fluid tempera-
ture sensor 1
When ATF temperature 0
°
C (32
°
F)
3.2V
When ATF temperature 20
°
C (68
°
F)
2.5V
When ATF temperature 80
°
C (176
°
F)
0.8V
9
W/B
Power supply
(Memory back-up)
Always
Battery voltage
10
R/W
Input clutch sole-
noid valve
When
vehicle
cruises
When the solenoid valve operating (in 1st gear, 2nd gear, or
3rd gear)
More than 2.0V
When the solenoid valve is not operating (4th gear or 5th
gear)
0V
11
R/L
High and low
reverse clutch
solenoid valve
When the solenoid valve operating [6 km/h (4 MPH) or
faster in 1st gear or 2nd gear]
More than 2.0V
When the solenoid valve is not operating [6 km/h (4 MPH) or
slower in 1st gear or 3rd, 4th, or 5th gear]
0V
TROUBLE DIAGNOSIS
AT-87
D
E
F
G
H
I
J
K
L
M
A
B
AT
12
Y/R
Power supply
(out)
–
Battery voltage
–
0V
13
W/L
Low coast brake
solenoid valve
When
vehicle
cruises
When the solenoid valve is operating (when running in M1-1
gear or M2-2 gear)
Battery voltage
When the solenoid valve is not operating (when running in
“D”)
0V
14
B
Ground
Always
0V
15
B/W
SEL4
–
–
16
W/G
SEL1 (ATF pres-
sure switch 2)
–
–
17
Y/B
A/T fluid tempera-
ture sensor 2
When ATF temperature about 0
°
C (32
°
F)
3.2V
When ATF temperature about 20
°
C (68
°
F)
2.4V
When ATF temperature about 80
°
C (176
°
F)
0.65V
19
R
Front brake sole-
noid valve
When
vehicle
cruises
When the solenoid valve is operating (other than 4th gear)
More than 2.0V
When the solenoid valve is not operating (4th gear)
0V
20
Y
TCC solenoid
valve
When lock-up
More than 2.0V
When not lock-up
0V
21
G
Direct clutch sole-
noid valve
When the solenoid valve is operating (1st gear or 5th gear)
More than 2.0V
When the solenoid valve is not operating (2nd gear, 3rd
gear, or 4th gear)
0V
22
P/B
SEL2 (ATF pres-
sure switch 5)
–
–
23
PU/W
K-line (CONSULT-
II signal)
The terminal is connected to the data link connector for CONSULT-II.
24
B
Ground
Always
0V
26
G/Y
PSC2 (ATF pres-
sure switch 6)
When
vehicle
cruises
When high and low reverse clutch solenoid valve ON.
0V
When high and low reverse clutch solenoid valve OFF.
Battery voltage
27
Y/B
Vehicle speed
sensor A/T (revo-
lution sensor)
When running at 20 km/h (12 MPH), use the CONSULT-II
pulse frequency measuring function.
185 (Hz)
30
R/W
PNP switch 1
Selector lever in “P” position.
Battery voltage
Selector lever in “N” position.
Less than 2.5V
31
OR
PNP switch 2
Selector lever in “P” position.
Battery voltage
Selector lever in “D” position.
Less than 2.5V
33
G/R
Power supply
–
Battery voltage
–
0V
Terminal
No.
Wire
color
Item
Condition
Data (Approx.)
AT-88
TROUBLE DIAGNOSIS
35
B/Y
PSB2 (ATF pres-
sure switch 1)
When
vehicle
cruises
When front brake solenoid valve OFF.
Battery voltage
When front brake solenoid valve ON.
0V
36
L/Y
Turbine revolution
sensor 1
When running at 50 km/h (31 MPH) in 4th gear with the
closed throttle position signal OFF, use the CONSULT-II
pulse frequency measuring function.
1.3 (kHz)
38
SB
PNP switch 3
Selector lever in “D” position.
Battery voltage
Selector lever in “R” position.
Less than 2.5V
39
BR
PNP switch 4
Selector lever in “D” position.
Less than 2.5V
Selector lever in “P” position.
Battery voltage
40
Y/G
DATA BIT1
–
–
41
R
Back-up lamp
relay
Selector lever in “R” position.
0V
Selector lever in other positions.
Battery voltage
42
G/R
Power supply
–
Battery voltage
–
0V
45
PU
Turbine revolution
sensor 2
When
vehicle
cruises
When running at 20 km/h (12 MPH) in 1st gear with the
closed throttle position signal OFF, use the CONSULT-II
pulse frequency measuring function.
1.3 (kHz)
46
B
Ground
Always
0V
47
G/W
PNP switch 3
(monitor)
Selector lever in “D” position.
Battery voltage
Selector lever in “R” position.
Less than 2.5V
48
B/W
PNP relay
(Starter relay)
Selector lever in “N”, “ P” positions.
Battery voltage
Selector lever in other positions.
0V
Terminal
No.
Wire
color
Item
Condition
Data (Approx.)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст