2005 NISSAN NAVARA ECU

AT-124
DTC P1716 TURBINE REVOLUTION SENSOR
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 2 4 , "
Diagnostic Procedure".
Diagnostic ProcedureECS00FZ7
1.CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Start vehicle and read the value of “TURBINE REV”.
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 2 3 , "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name Condition Display value
TURBINE REV During driving (lock-up ON)Approximately matches the
engine speed.
PCIA0041E

DTC P1721 VEHICLE SPEED SENSOR MTR
AT-125
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DTC P1721 VEHICLE SPEED SENSOR MTRPFP:24814
DescriptionECS00FZ8
The vehicle speed sensor MTR signal is transmitted from combination meter to TCM by CAN communication
line. The signal functions as an auxiliary device to revolution sensor when it is malfunctioning. TCM will then
use the vehicle speed sensor MTR signal.
CONSULT-II Reference ValueECS00FZ9
On Board Diagnosis LogicECS00FZA
Diagnostic trouble code “P1721 VEH SPD SE/CIR-MTR” with CONSULT-II is detected when TCM does not
receive the proper vehicle speed sensor MTR signal (input by CAN communication) from combination meter.
Possible CauseECS00FZB
Harness or connectors
(The sensor circuit is open or shorted.)
DTC Confirmation ProcedureECS00FZC
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 “ECU INPUT 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: 1.0/8 or less
VHCL/S SE-MTR: 30 km/h (17 MPH) or more
6. If DTC is detected, go toAT- 1 2 6 , "
Diagnostic Procedure".
Item name Condition Display value
VHCL/S SE-MTR During driving Approximately matches the speedometer reading.
BCIA0031E

AT-126
DTC P1721 VEHICLE SPEED SENSOR MTR
Diagnostic Procedure
ECS00FZD
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE",AT-89, "Diagnostic Procedure
Without CONSULT-II".
Is malfunction in the CAN communication indicated in the result?
YES >> Check CAN communication line. Refer toAT-91, "DTC U1000 CAN COMMUNICATION LINE".
NO >> GO TO 2.
2.CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Drive vehicle and read out the value of “VHCL/S SE-MTR”.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.CHECK COMBINATION METER
Check combination meter. Refer toDI-18, "
Trouble Diagnosis".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK DTC
PerformAT- 1 2 5 , "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.
5.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 6.
NG >> Repair or replace damaged parts.
6.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 Condition Display value
VHCL/S SE-MTR During drivingApproximately matches the
speedometer reading.
SCIA2148E

DTC P1730 A/T INTERLOCK
AT-127
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DTC P1730 A/T INTERLOCKPFP:00000
DescriptionECS00FZE
Fail-safe function to detect interlock conditions.
On Board Diagnosis LogicECS00FZF
lDiagnostic trouble code “P1730 A/T INTERLOCK” with CONSULT-II or 12th judgement flicker without
CONSULT-II is detected when TCM does not receive the proper voltage signal from the sensor and
switch.
lTCM monitors and compares gear position and conditions of each ATF pressure switch when gear is
steady.
Possible CauseECS00FZG
lHarness or connectors
(The solenoid and switch circuit is open or shorted.)
lLow coast brake solenoid valve
lATFpressureswitch2
DTC Confirmation ProcedureECS00FZH
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 2
consecutive seconds.
SLCT LVR POSI: “D” position
6. If DTC is detected, go toAT- 1 2 8 , "
Diagnostic Procedure".
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle and maintain the following condition for at least 2 consecutive seconds.
Selector lever: “D” position
3. Perform self-diagnosis. Refer toAT-89, "
Diagnostic Procedure Without CONSULT-II".
4. If DTC is detected, go toAT- 1 2 8 , "
Diagnostic Procedure".
BCIA0031E

AT-130
DTC P1731 A/T 1ST ENGINE BRAKING
DTC P1731 A/T 1ST ENGINE BRAKING
PFP:00000
DescriptionECS00FZK
Fail-safe function to prevent sudden decrease in speed by engine brake other than at “1” position.
CONSULT-II Reference ValueECS00FZL
On Board Diagnosis LogicECS00FZM
Diagnostic trouble code “P1731 A/T 1ST E/BRAKING” with CONSULT-II or 13th judgement flicker without
CONSULT-II is detected under the following conditions.
lWhen TCM does not receive the proper voltage signal from the sensor.
lWhen TCM monitors each ATF pressure switch and solenoid monitor value, and detects as irregular when
engine brake of 1st gear acts other than at “1” position.
Possible CauseECS00FZN
lHarness or connectors
(The sensor circuit is open or shorted.)
lLow coast brake solenoid valve
lATF pressure switch 2
DTC Confirmation ProcedureECS00FZO
CAUTION:
lAlways drive vehicle at a safe speed.
lBe careful not to rev engine into the red zone on the tachometer.
NOTE:
If “DTC Confirmation Procedure” has been previously preformed, 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 2
consecutive seconds.
ENGINE SPEED: 1,200 rpm or more
SLCT LVR POSI: “1” position
GEAR: “1” position
6. If DTC is detected, go toAT- 1 3 1 , "
Diagnostic Procedure".
WITHOUT CONSULT-II
1. Start engine.
2. Drive vehicle and maintain the following conditions for at least 2 consecutive seconds.
Engine speed: 1,200 rpm or more
Selector lever position: “1” position
Gear position: “1” position
3. Perform self-diagnosis. Refer toAT-89, "
Diagnostic Procedure Without CONSULT-II".
4. If DTC is detected, go toAT- 1 3 1 , "
Diagnostic Procedure".
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
BCIA0031E

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 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-142
DTCP1762DIRECTCLUTCHSOLENOIDVALVE
DTC P1762 DIRECT CLUTCH SOLENOID VALVE
PFP:31940
DescriptionECS00G0E
Direct 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 ValueECS00G0F
On Board Diagnosis LogicECS00G0G
Diagnostic trouble code “P1762 D/C SOLENOID/CIRC” with CONSULT-II or 2nd 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 CauseECS00G0H
lHarness or connectors
(The solenoid circuit is open or shorted.)
lDirect clutch solenoid valve
DTC Confirmation ProcedureECS00G0I
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: “1”
“2” (D/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 4 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: “1”
“2” (D/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 4 3 , "
Diagnostic Procedure".
Item name Condition Display value (Approx.)
D/C SOLENOIDDirect clutch disengaged. Refer toAT- 1 7
. 0.6 - 0.8 A
Direct clutch engaged. Refer toAT- 1 7
.0-0.05A
BCIA0031E