2005 NISSAN NAVARA engine

DTC P1731 A/T 1ST ENGINE BRAKING
AT-131
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Diagnostic ProcedureECS00FZP
1.CHECK INPUT SIGNALS
With CONSULT-II
1. Start the engine.
2. Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “A/T” with CONSULT-II.
3. Drive vehicle in the “1 ” position (1st gear), and confirm the ON/
OFF actuation of “ATF PRES SW 2” and “ON OFF SOL”.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer toAT- 1 6 4 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check the following.
lA/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace control valve with TCM. Refer toAT- 2 1 8 , "Control Valve With TCM and A/T Fluid Temper-
ature Sensor 2".
NG >> Repair or replace damaged parts.
4.CHECK DTC
PerformAT- 1 3 0 , "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name Condition Display value
ON OFF SOLLow coast brake engaged. Refer toAT- 1 7
.ON
Low coast brake disengaged. Refer toAT- 1 7
.OFF
AT F P R E S S W 2Low coast brake engaged. Refer toAT- 1 7
.ON
Low coast brake disengaged. Refer toAT- 1 7
.OFF
SCIA4670E

AT-132
DTC P1752 INPUT CLUTCH SOLENOID VALVE
DTC P1752 INPUT CLUTCH SOLENOID VALVE
PFP:31940
DescriptionECS00FZQ
Input clutch solenoid valve is controlled by TCM in response to signals sent from PNP switch, vehicle speed
sensor and accelerator pedal position sensor. Gears will then be shifted to the optimum position.
CONSULT-II Reference ValueECS00FZR
On Board Diagnosis LogicECS00FZS
Diagnostic trouble code “P1752 I/C SOLENOID/CIRC” with CONSULT-II or 5th judgement flicker without
CONSULT-II is detected under the following conditions.
lWhen TCM detects an improper voltage drop when it tries to operate the solenoid valve.
lWhen TCM detects as irregular by comparing target value with monitor value.
Possible CauseECS00FZT
lHarness or connectors
(The solenoid circuit is open or shorted.)
lInput clutch solenoid valve
DTC Confirmation ProcedureECS00FZU
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 “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Touch “START”.
4. Start engine.
5. Drive vehicle and maintain the following conditions for at least 5
consecutive seconds.
ACCELE POSI: 1.5/8 - 2.0/8
SLCT LVR POSI: “D” position
GEAR: “3”
“4” (I/C ON/OFF)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions required for this test.
6. If DTC is detected go toAT- 1 3 3 , "
Diagnostic Procedure".
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.
Accelerator opening: 1.5/8 - 2.0/8
Selector lever position: “D” position
Gear position: “3”
“4” (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 self-diagnosis. Refer toAT-89, "
Diagnostic Procedure Without CONSULT-II".
4. If DTC is detected, go toAT- 1 3 3 , "
Diagnostic Procedure".
Item name Condition Display value (Approx.)
I/C SOLENOIDInput clutch disengaged. Refer toAT- 1 7
. 0.6 - 0.8 A
Input clutch engaged. Refer toAT- 1 7
.0-0.05A
BCIA0031E

DTC P1752 INPUT CLUTCH SOLENOID VALVE
AT-133
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Diagnostic ProcedureECS00FZV
1.CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Start engine.
4. Read the value of “I/C SOLENOID” while driving.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer toAT- 1 6 4 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check the following.
lA/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace control valve with TCM. Refer toAT- 2 1 8 , "Control Valve With TCM and A/T Fluid Temper-
ature Sensor 2".
NG >> Repair or replace damaged parts.
4.CHECK DTC
PerformAT- 1 3 2 , "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name ConditionDisplay value
(Approx.)
I/C SOLENOIDInput clutch disengaged. Refer toAT- 1 7
. 0.6 - 0.8 A
Input clutch engaged. Refer toAT- 1 7
.0-0.05ASCIA4793E

AT-134
DTC P1754 INPUT CLUTCH SOLENOID VALVE FUNCTION
DTC P1754 INPUT CLUTCH SOLENOID VALVE FUNCTION
PFP:31940
DescriptionECS00FZW
lInput clutch solenoid valve is controlled by TCM in response to signals sent from PNP switch, vehicle
speed sensor and accelerator pedal position sensor. Gears will then be shifted to the optimum position.
lThis is not only caused by electrical malfunction (circuits open or shorted) but also by mechanical mal-
function such as control valve sticking, improper solenoid valve operation.
CONSULT-II Reference ValueECS00FZX
On Board Diagnosis LogicECS00FZY
Diagnostic trouble code “P1754 I/C SOLENOID FNCTN” with CONSULT-II or 5th judgement flicker without
CONSULT-II is detected under the following conditions.
lWhen TCM detects that actual gear ratio is irregular, and relation between gear position and condition of
ATF pressure switch 3 is irregular during depressing accelerator pedal. (Other than during shift change)
lWhen 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 CauseECS00FZZ
lHarness or connectors
(The solenoid and switch circuits are open or shorted.)
lInput clutch solenoid valve
lATF pressure switch 3
DTC Confirmation ProcedureECS00G00
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
SLCT LVR POSI: “D” position
GEAR: “3”
“4” (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, go toAT- 1 3 5 , "
Diagnostic Procedure".
If DTC (P1752) is detected, go toAT- 1 3 3 , "
Diagnostic Procedure".
If DTC (P1843) is detected, go toAT- 1 5 9 , "
Diagnostic Procedure".
Item name Condition Display value (Approx.)
I/C SOLENOIDInput clutch disengaged. Refer toAT- 1 7
. 0.6 - 0.8 A
Input clutch engaged. Refer toAT- 1 7
.0-0.05A
AT F P R E S S W 3Input clutch engaged. Refer toAT- 1 7
.ON
Input clutch disengaged. Refer toAT- 1 7
.OFF
BCIA0031E

DTC P1754 INPUT CLUTCH SOLENOID VALVE FUNCTION
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WITHOUT CONSULT-II
1. Start engine.
2. Accelerate vehicle to maintain the following conditions.
Accelerator opening: 1.5/8 - 2.0/8
Selector lever position: “D” position
Gear position: “3”
“4” (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 position, then perform step 1 to 3 again.
5. Perform self-diagnosis. Refer toAT-89, "
Diagnostic Procedure Without CONSULT-II".
6. If DTC is detected, go toAT- 1 3 5 , "
Diagnostic Procedure".
Diagnostic ProcedureECS00G01
1.CHECK INPUT SIGNALS
With CONSULT-II
1. Start engine.
2. Select “SELECTION FROM MENU” in “DATA MONITOR” mode
for “A/T” with CONSULT-II.
3. Drive vehicle in “D” position (3rd
4th gear), and confirm the
ON/OFF actuation of “ATF PRES SW 3” and electrical current
value of “I/C SOLENOID”.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer toAT- 1 6 4 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check the following.
lA/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace control valve with TCM. Refer toAT- 2 1 8 , "Control Valve With TCM and A/T Fluid Temper-
ature Sensor 2".
NG >> Repair or replace damaged parts.
Item name ConditionDisplay value
(Approx.)
I/C SOLENOIDInput clutch disengaged. Refer toAT- 1 7
. 0.6 - 0.8 A
Input clutch engaged. Refer toAT- 1 7
.0-0.05A
AT F P R E S S W 3Input clutch engaged. Refer toAT- 1 7
.ON
Input clutch disengaged. Refer toAT- 1 7
.OFF
SCIA4795E

DTC P1757 FRONT BRAKE SOLENOID VALVE
AT-137
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DTC P1757 FRONT BRAKE SOLENOID VALVEPFP:31940
DescriptionECS00G02
Front brake solenoid valve is controlled by TCM in response to signals sent from PNP switch, vehicle speed
sensor and accelerator pedal position sensor. Gears will then be shifted to the optimum position.
CONSULT-II Reference ValueECS00G03
On Board Diagnosis LogicECS00G04
Diagnostic trouble code “P1757 FR/B SOLENOID/CIRC” with CONSULT-II or 6th judgement flicker without
CONSULT-II is detected under the following conditions.
lWhen TCM detects an improper voltage drop when it tries to operate the solenoid valve.
lWhen TCM detects as irregular by comparing target value with monitor value.
Possible CauseECS00G05
lHarness or connectors
(The solenoid circuit is open or shorted.)
lFront brake solenoid valve
DTC Confirmation ProcedureECS00G06
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 “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Touch “START”.
4. Start engine.
5. Drive vehicle and maintain the following conditions for at least 5
consecutive seconds.
ACCELE POSI: 1.5/8 - 2.0/8
SLCT LVR POSI: “D” position
GEAR: “3”
“4” (FR/B ON/OFF)
Driving location: Driving the vehicle uphill (increased
engine load) will help maintain the driving conditions required for this test.
6. If DTC is detected go toAT- 1 3 8 , "
Diagnostic Procedure".
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.
Accelerator opening: 1.5/8 - 2.0/8
Selector lever position: “D” position
Gear position: “3”
“4” (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 self-diagnosis. Refer toAT-89, "
Diagnostic Procedure Without CONSULT-II".
4. If DTC is detected, go toAT- 1 3 8 , "
Diagnostic Procedure".
Item name Condition Display value (Approx.)
FR/B SOLENOIDFront brake engaged. Refer toAT- 1 7
.0.6-0.8A
Front brake disengaged. Refer toAT- 1 7
.0-0.05A
BCIA0031E

AT-138
DTC P1757 FRONT BRAKE SOLENOID VALVE
Diagnostic Procedure
ECS00G07
1.CHECK INPUT SIGNAL
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “MAIN SIGNALS” in “DATA MONITOR” mode for “A/T”
with CONSULT-II.
3. Start engine.
4. Read the value of “FR/B SOLENOID” while driving.
OK or NG
OK >> GO TO 4.
NG >> GO TO 2.
2.CHECK TCM POWER SUPPLY AND GROUND CIRCUIT
Check TCM power supply and ground circuit. Refer toAT- 1 6 4 , "
MAIN POWER SUPPLY AND GROUND CIR-
CUIT".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.DETECT MALFUNCTIONING ITEM
Check the following.
lA/T assembly harness connector pin terminals for damage or loose connection with harness connector.
OK or NG
OK >> Replace control valve with TCM. Refer toAT- 2 1 8 , "Control Valve With TCM and A/T Fluid Temper-
ature Sensor 2".
NG >> Repair or replace damaged parts.
4.CHECK DTC
PerformAT- 1 3 7 , "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name ConditionDisplay value
(Approx.)
FR/B SOLENOIDFront brake engaged. Refer toAT- 1 7
. 0.6 - 0.8 A
Front brake disengaged. Refer toAT- 1 7
.0-0.05ASCIA4793E

DTC P1759 FRONT BRAKE SOLENOID VALVE FUNCTION
AT-139
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DTC P1759 FRONT BRAKE SOLENOID VALVE FUNCTIONPFP:31940
DescriptionECS00G08
lFront brake solenoid valve is controlled by TCM in response to signals sent from PNP switch, vehicle
speed sensor and accelerator pedal position sensor. Gears will then be shifted to the optimum position.
lThis is not only caused by electrical malfunction (circuits open or shorted) but also by mechanical mal-
function such as control valve sticking, improper solenoid valve operation.
CONSULT-II Reference ValueECS00G09
On Board Diagnosis LogicECS00G0A
Diagnostic trouble code “P1759 FR/B SOLENOID FNCT” with CONSULT-II or 6th judgement flicker without
CONSULT-II is detected under the following conditions.
lWhen 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)
lWhen 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 CauseECS00G0B
lHarness or connectors
(The solenoid and switch circuits are open or shorted.)
lFront brake solenoid valve
lATFpressureswitch1
DTC Confirmation ProcedureECS00G0C
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
SLCT LVR POSI: “D” position
GEAR: “3”
“4” (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, go toAT- 1 4 0 , "
Diagnostic Procedure".
If DTC (P1757) is detected, go toAT- 1 3 8 , "
Diagnostic Procedure".
If DTC (P1841) is detected, go toAT- 1 5 7 , "
Diagnostic Procedure".
Item name Condition Display value (Approx.)
FR/B SOLENOIDFront brake engaged. Refer toAT- 1 7
.0.6-0.8A
Front brake disengaged. Refer toAT- 1 7
.0-0.05A
AT F P R E S S W 1Front brake engaged. Refer toAT- 1 7
.ON
Front brake disengaged. Refer toAT- 1 7
.OFF
BCIA0031E