Infiniti M45 (Y34). Manual — part 83
DTC P1769 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE FUNCTION
AT-217
D
E
F
G
H
I
J
K
L
M
A
B
AT
TCM terminal and data are reference value. Measured between each terminal and ground.
Diagnostic Procedure
ACS004A5
1.
CHECK INPUT SIGNALS
With CONSULT-II
1.
Start engine.
2.
Select “ECU INPUT SIGNALS” or “MAIN SIGNALS” in “DATA
MONITOR” mode for “A/T” with CONSULT-II.
3.
Accelerate vehicle in “D” position (2nd
Þ
3rd gear), and confirm
the ON/OFF actuation of the “ATF PRES SW 6”.
Without CONSULT-II
1.
Start engine.
2.
Accelerate vehicle in “D” position (2nd
Þ
3rd gear).
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 2.
Terminal
No.
Wire
color
Item
Condition
Data (Approx.)
11
R/L
High and low
reverse clutch sole-
noid valve
When
vehicle
cruises
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
26
G/Y
PSC2 (ATF pres-
sure switch 6)
When high and low reverse clutch solenoid valve ON.
0V
When high and low reverse clutch solenoid valve OFF.
Battery voltage
Item name
Condition
Display value
ATF PRES SW 6
High and low reverse
clutch solenoid valve
operates.
OFF
Other conditions
ON
PCIA0067E
Solenoid valve
Connector
No.
Terminal No.
(Wire color)
Voltage
High and low reverse
clutch solenoid valve
OFF
F104
26 (G/Y) - Ground
Battery voltage
ON
Approx. 0 V
PCIA0068E
AT-218
DTC P1769 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE FUNCTION
2.
CHECK HARNESS BETWEEN TCM AND A/T UNIT ASSEMBLY HARNESS CONNECTOR
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector.
3.
Check continuity between A/T unit assembly harness connector
and TCM connector.
4.
If OK, check harness for short to ground and short to power.
5.
Reinstall any part removed.
OK or NG
OK
>> GO TO 3.
NG
>> Repair open circuit or short to ground or short to power
in harness or connectors.
3.
CHECK TERMINAL CORD ASSEMBLY
1.
Remove oil pan. Refer to
AT-312, "Control Valve Assembly"
2.
Disconnect A/T unit assembly harness connector and control valve assembly harness connector.
3.
Check continuity between A/T unit assembly harness connector
and control valve assembly harness connector.
4.
If OK, check harness for short to ground and short to power.
5.
Reinstall any part removed.
OK or NG
OK
>> Replace the control valve assembly. Refer to
.
NG
>> Repair open circuit or short to ground or short to power
in harness or connectors.
Item
Connector No.
Terminal No.
(Wire color)
Continuity
TCM
F104
26 (G/Y)
Yes
A/T unit assembly harness
connector
F26
4 (G/Y)
TCM
F103
11 (R/L)
Yes
A/T unit assembly harness
connector
F27
3 (R/L)
SCIA3090E
Item
Connector No.
Terminal No. (Wire color)
Continuity
A/T unit assembly
harness connector
F26
4 (Y)
Yes
Control valve assem-
bly harness connector
F302
11 (Y)
A/T unit assembly
harness connector
F27
3 (B/W)
Yes
Control valve assem-
bly harness connector
F301
5 (B/W)
SCIA3091E
DTC P1769 HIGH AND LOW REVERSE CLUTCH SOLENOID VALVE FUNCTION
AT-219
D
E
F
G
H
I
J
K
L
M
A
B
AT
4.
CHECK DTC
Perform “DTC Confirmation Procedure”. Refer to
AT-215, "DTC Confirmation Procedure"
.
OK or NG
OK
>> INSPECTION END
NG
>> GO TO 5.
5.
CHECK TCM
1.
Check TCM input/output signal. Refer to
AT-86, "TCM Input/Output Signal Reference Values"
2.
If NG, recheck TCM pin terminals for damage or loose connection with harness connector.
OK or NG
OK
>> INSPECTION END
NG
>> Repair or replace damaged parts.
AT-220
DTC P1772 LOW COAST BRAKE SOLENOID VALVE
DTC P1772 LOW COAST BRAKE SOLENOID VALVE
PFP:31940
Description
ACS004A6
Low coast brake solenoid valve is turned ON or OFF by the TCM in response to signals sent from the PNP
switch, vehicle speed sensor and accelerator pedal position sensor (throttle position sensor). Gears will then
be shifted to the optimum position.
CONSULT-II Reference Value
ACS004PP
On Board Diagnosis Logic
ACS004A7
●
This is an OBD-II self-diagnostic item.
●
Diagnostic trouble code “LC/B SOLENOID/CIRC” with CONSULT-II or P1772 without CONSULT-II is
detected when TCM detects an improper voltage drop when it tries to operate the solenoid valve.
Possible Cause
ACS004A8
●
Harness or connectors
(The solenoid circuit is open or shorted.)
●
Low coast brake solenoid valve
DTC Confirmation Procedure
ACS004A9
NOTE:
If “DTC Confirmation Procedure” has been previously conducted, always turn ignition switch OFF and
wait at least 10 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. (Do not start engine.)
2.
Select “DATA MONITOR” mode for “A/T” with CONSULT-II.
3.
Start engine.
4.
Maintain the following conditions for at least 5 consecutive sec-
onds.
Selector lever: “M” position
Gear position: “M1-1st” or “M2-2nd” gear (LC/B ON/OFF)
5.
If DTC is detected, go to
AT-222, "Diagnostic Procedure"
WITH GST
Follow the procedure “With CONSULT-II”.
Item name
Condition
Display value
ON OFF SOL
Low coast brake solenoid valve operates.
ON
Other conditions
OFF
SAT014K
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст