Infiniti M45 (Y34). Manual — part 78
DTC P1759 FRONT BRAKE SOLENOID VALVE FUNCTION
AT-197
D
E
F
G
H
I
J
K
L
M
A
B
AT
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
35 (B/Y)
Yes
A/T unit assembly harness
connector
F26
3 (B/Y)
TCM
F103
19 (R)
Yes
A/T unit assembly harness
connector
F27
5 (R)
SCIA3080E
Item
Connector No.
Terminal No. (Wire color)
Continuity
A/T unit assembly
harness connector
F26
3 (G)
Yes
Control valve assem-
bly harness connector
F302
12 (G)
A/T unit assembly
harness connector
F27
5 (W/R)
Yes
Control valve assem-
bly harness connector
F301
8 (W/R)
SCIA3081E
AT-198
DTC P1759 FRONT BRAKE SOLENOID VALVE FUNCTION
4.
CHECK DTC
Perform “DTC Confirmation Procedure”. Refer to
AT-194, "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.
DTC P1762 DIRECT CLUTCH SOLENOID VALVE
AT-199
D
E
F
G
H
I
J
K
L
M
A
B
AT
DTC P1762 DIRECT CLUTCH SOLENOID VALVE
PFP:31940
Description
ACS0049G
Direct clutch solenoid valve is controlled 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
ACS004PL
On Board Diagnosis Logic
ACS0049H
●
This is an OBD-II self-diagnostic item.
●
Diagnostic trouble code “D/C SOLENOID/CIRC” with CONSULT-II or P1762 without CONSULT-II is
detected under the following conditions.
–
When TCM detects an improper voltage drop when it tries to operate the solenoid valve.
–
When TCM detects as irregular by comparing target value with monitor value.
Possible Cause
ACS0049I
●
Harness or connectors
(The solenoid circuit is open or shorted.)
●
Direct clutch solenoid valve
DTC Confirmation Procedure
ACS0049J
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.
ACCELE POS: 1.5/8 - 2.0/8
Selector lever: “D” position
Gear position: 1st
Þ
2nd Gear (D/C ON/OFF)
5.
AT-201, "Diagnostic Procedure"
WITH GST
Follow the procedure “With CONSULT-II”.
Item name
Condition
Display value (Approx.)
D/C SOLENOID
Direct clutch solenoid valve operates.
0.6 - 0.8 A
Other conditions
0 - 0.05 A
SAT014K
AT-200
DTC P1762 DIRECT CLUTCH SOLENOID VALVE
Wiring Diagram — AT — D/C
ACS0049K
TCWA0129E
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