2007 INFINITI QX56 Factory Service Manual

water pump turn signal bulb service reset parking sensors brake rotor mileage

Page 201 of 3061

INFINITI QX56 2007 Factory Service Manual DTC P1752 INPUT CLUTCH SOLENOID VALVE
AT-131
< SERVICE INFORMATION >
D
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AT
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1. Turn ignition switch “ON”.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A

Page 202 of 3061

INFINITI QX56 2007 Factory Service Manual AT-132
< SERVICE INFORMATION >
DTC P1754 INPUT CLUTCH SOLENOID VALVE FUNCTION
DTC P1754 INPUT CLUTCH SOLENOID VALVE FUNCTION
DescriptionINFOID:0000000003532360
• Input clutch solenoid valve is contr

AT-132
< SERVICE INFORMATION >
DTC P1754 INPUT CLUTCH SOLENOID VALVE FUNCTION
DTC P1754 INPUT CLUTCH SOLENOID VALVE FUNCTION
DescriptionINFOID:0000000003532360
• Input 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.
• This is not only caused by electrical malfunction (circuits open or shorted) but also by mechanical malfunc-
tion such as control valve sticking, improper solenoid valve operation.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003532361
On Board Diagnosis LogicINFOID:0000000003532362
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1754 I/C SOLENOID FNCTN” with CONSULT-II is detected under the following
conditions.
- When TCM detects that actual gear ratio is irregular, and relation between gear position and condition of
pressure switch 3 is irregular during depressing accelerator pedal. (Other than during shift change)
- When TCM detects that relation between gear position and condition of ATF pressure switch 3 is irregular
during releasing accelerator pedal. (Other than during shift change)
Possible CauseINFOID:0000000003532363
• Harness or connectors
(The solenoid and switch circuits are open or shorted.)
• Input clutch solenoid valve
• ATF pressure switch 3
DTC Confirmation ProcedureINFOID:0000000003532364
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Start engine.
2. Accelerate vehicle to maintain the following conditions.
ACCELE POSI: 1.5/8 - 2.0/8
Selector lever: “D” position
Gear position: 3rd ⇒ 4th Gear (I/C ON/OFF)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
3. Perform step “2” again.
4. Turn ignition switch “OFF”, then perform step “1” to “3” again.
5. Check “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II. If DTC (P1754) is detected, refer to AT-133, "
Diagnosis Pro-
cedure".
If DTC (P1752) is detected, go to AT-133, "
Diagnosis Procedure".
If DTC (P1843) is detected, go to AT-152, "
Diagnosis Procedure".
Item name Condition Display value (Approx.)
I/C SOLENOIDInput clutch disengaged. Refer to AT- 2 0
. 0.6 - 0.8 A
Input clutch engaged. Refer to AT- 2 0
.0 - 0.05 A
ATF PRES SW 3Input clutch engaged. Refer to AT- 2 0
.ON
Input clutch disengaged. Refer to AT- 2 0
.OFF
BCIA0031E

Page 203 of 3061

INFINITI QX56 2007 Factory Service Manual DTC P1754 INPUT CLUTCH SOLENOID VALVE FUNCTION
AT-133
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
Diagnosis ProcedureINFOID:0000000003532365
1.CHECK INPUT SIGNALS
With CONSULT-II
1. Turn

Page 204 of 3061

INFINITI QX56 2007 Factory Service Manual AT-134
< SERVICE INFORMATION >
DTC P1757 FRONT BRAKE SOLENOID VALVE
DTC P1757 FRONT BRAKE SOLENOID VALVE
DescriptionINFOID:0000000003532366
Front brake solenoid valve is controlled by the TCM in respo

AT-134
< SERVICE INFORMATION >
DTC P1757 FRONT BRAKE SOLENOID VALVE
DTC P1757 FRONT BRAKE SOLENOID VALVE
DescriptionINFOID:0000000003532366
Front brake 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 in Data Monitor ModeINFOID:0000000003532367
On Board Diagnosis LogicINFOID:0000000003532368
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1757 FR/B SOLENOID/CIRC” with 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 CauseINFOID:0000000003532369
• Harness or connectors
(The solenoid circuit is open or shorted.)
• Front brake solenoid valve
DTC Confirmation ProcedureINFOID:0000000003532370
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing 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. Drive vehicle and maintain the following conditions for at least 5
consecutive seconds.
ACCELE POS: 1.5/8 - 2.0/8
Selector lever: “D” position
Gear position: 3rd ⇒ 4th Gear (FR/B ON/OFF)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
5. If DTC is detected go to AT-134, "
Diagnosis Procedure".
WITH GST
Follow the procedure “With CONSULT-II”.
Diagnosis ProcedureINFOID:0000000003532371
1.CHECK INPUT SIGNAL
With CONSULT-II
Item name Condition Display value (Approx.)
FR/B SOLENOIDFront brake engaged. Refer to AT- 2 0
. 0.6 - 0.8 A
Front brake disengaged. Refer to AT- 2 0
.0 - 0.05 A
BCIA0031E

Page 205 of 3061

INFINITI QX56 2007 Factory Service Manual DTC P1757 FRONT BRAKE SOLENOID VALVE
AT-135
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
1. Turn ignition switch “ON”.
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/

Page 206 of 3061

INFINITI QX56 2007 Factory Service Manual AT-136
< SERVICE INFORMATION >
DTC P1759 FRONT BRAKE SOLENOID VALVE FUNCTION
DTC P1759 FRONT BRAKE SOLENOID VALVE FUNCTION
DescriptionINFOID:0000000003532372
• Front brake solenoid valve is controll

AT-136
< SERVICE INFORMATION >
DTC P1759 FRONT BRAKE SOLENOID VALVE FUNCTION
DTC P1759 FRONT BRAKE SOLENOID VALVE FUNCTION
DescriptionINFOID:0000000003532372
• Front brake 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.
• This is not only caused by electrical malfunction (circuits open or shorted) but also by mechanical malfunc-
tion such as control valve sticking, improper solenoid valve operation.
CONSULT-II Reference Value in Data Monitor ModeINFOID:0000000003532373
On Board Diagnosis LogicINFOID:0000000003532374
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1759 FR/B SOLENOID FNCT” with CONSULT-II is detected under the following
conditions.
- When TCM detects that actual gear ratio is irregular, and relation between gear position and condition of
ATF pressure switch 1 is irregular during depressing accelerator pedal. (Other than during shift change)
- When TCM detects that relation between gear position and condition of ATF pressure switch 1 is irregular
during releasing accelerator pedal. (Other than during shift change)
Possible CauseINFOID:0000000003532375
• Harness or connectors
(The solenoid and switch circuits are open or shorted.)
• Front brake solenoid valve
• ATF pressure switch 1
DTC Confirmation ProcedureINFOID:0000000003532376
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
WITH CONSULT-II
1. Start engine.
2. Accelerate vehicle to maintain the following conditions.
ACCELE POS: 1.5/8 - 2.0/8
Selector lever: “D” position
Gear position: 3rd ⇒ 4th Gear (FR/B ON/OFF)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
3. Perform step “2” again.
4. Turn ignition switch “OFF”, then perform step “1” to “3” again.
5. Check “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II. If DTC (P1759) is detected, refer to AT-137, "
Diagnosis Pro-
cedure".
If DTC (P1757) is detected, go to AT-134, "
Diagnosis Procedure".
If DTC (P1841) is detected, go to AT-150, "
Diagnosis Procedure".
Item name Condition Display value (Approx.)
FR/B SOLENOIDFront brake engaged. Refer to AT- 2 0
. 0.6 - 0.8 A
Front brake disengaged. Refer to AT- 2 0
.0 - 0.05 A
ATF PRES SW 1Front brake engaged. Refer to AT- 2 0
.ON
Front brake disengaged. Refer to AT- 2 0
.OFF
BCIA0031E

Page 207 of 3061

INFINITI QX56 2007 Factory Service Manual DTC P1759 FRONT BRAKE SOLENOID VALVE FUNCTION
AT-137
< SERVICE INFORMATION >
D
E
F
G
H
I
J
K
L
MA
B
AT
N
O
P
Diagnosis ProcedureINFOID:0000000003532377
1.CHECK INPUT SIGNALS
With CONSULT-II
1. Start

Page 208 of 3061

INFINITI QX56 2007 Factory Service Manual AT-138
< SERVICE INFORMATION >
DTC P1762 DIRECT CLUTCH SOLENOID VALVE
DTC P1762 DIRECT CLUTCH SOLENOID VALVE
DescriptionINFOID:0000000003532378
Direct clutch solenoid valve is controlled by the TCM in

AT-138
< SERVICE INFORMATION >
DTC P1762 DIRECT CLUTCH SOLENOID VALVE
DTC P1762 DIRECT CLUTCH SOLENOID VALVE
DescriptionINFOID:0000000003532378
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 in Data Monitor ModeINFOID:0000000003532379
On Board Diagnosis LogicINFOID:0000000003532380
• This is an OBD-II self-diagnostic item.
• Diagnostic trouble code “P1762 D/C SOLENOID/CIRC” with 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 CauseINFOID:0000000003532381
• Harness or connectors
(The solenoid circuit is open or shorted.)
• Direct clutch solenoid valve
DTC Confirmation ProcedureINFOID:0000000003532382
NOTE:
If “DTC Confirmation Procedure” has been previously performed, always turn ignition switch “OFF”
and wait at least 10 seconds before performing 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. Drive vehicle and maintain the following conditions for at least 5
consecutive seconds.
ACCELE POS: 1.5/8 - 2.0/8
Selector lever: “D” position
Gear position: 1st ⇒ 2nd Gear (D/C ON/OFF)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions
required for this test.
5. If DTC is detected, go to AT-138, "
Diagnosis Procedure".
WITH GST
Follow the procedure “With CONSULT-II”.
Diagnosis ProcedureINFOID:0000000003532383
1.CHECK INPUT SIGNAL
With CONSULT-II
Item name Condition Display value (Approx.)
D/C SOLENOIDDirect clutch disengaged. Refer to AT- 2 0
. 0.6 - 0.8 A
Direct clutch engaged. Refer to AT- 2 0
.0 - 0.05 A
BCIA0031E

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