U1000 NISSAN NAVARA 2005 Repair User Guide

DTC P0725 ENGINE SPEED SIGNAL
AT-109
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Diagnostic ProcedureECS00FYD
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE",AT-89, "Diagnostic Procedure
Without CONSULT-II".
Is a malfunction in the CAN communication indicated in the results?
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. While monitoring engine speed, check for engine speed change
corresponding to wide-open throttle position signal.
OK or NG
OK >> GO TO 3.
NG >> Perform self-diagnosis for “ENGINE” with CONSULT-II. Refer toEC-62, "
SELF-DIAGNOSTIC
MODE".
3.CHECK DTC
PerformAT- 1 0 8 , "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 4.
4.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 5.
NG >> Repair or replace damaged parts.
5.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
ENGINE SPEED Engine runningClosely matches the tachome-
ter reading.
PCIA0041E

AT-116
DTC P1705 THROTTLE POSITION SENSOR
DTC P1705 THROTTLE POSITION SENSOR
PFP:22620
DescriptionECS00G43
The accelerator pedal position sensor sends a signal to ECM, and ECM sends signals to TCM with CAN com-
munication.
CONSULT-II Reference ValueECS00G44
On Board Diagnosis LogicECS00G45
Diagnostic trouble code “P1705 TP SEN/CIRC A/T” with CONSULT-II or 15th judgement flicker without CON-
SULT-II is detected when TCM does not receive the proper accelerator pedal position signals (input by CAN
communication) from ECM.
Possible CauseECS00G46
Harness or connectors
(The sensor circuit is open or shorted.)
DTC Confirmation ProcedureECS00G47
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 and let it idle for 1 second.
5. If DTC is detected, go toAT- 11 6 , "
Diagnostic Procedure".
WITHOUT CONSULT-II
1. Start engine and let it idle for 1 second.
2. Perform self-diagnosis. Refer toAT-89, "
Diagnostic Procedure Without CONSULT-II".
3. If DTC is detected, go toAT- 11 6 , "
Diagnostic Procedure".
Diagnostic ProcedureECS00G48
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE",AT-89, "Diagnostic Procedure
Without CONSULT-II".
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer toAT-91, "DTC U1000 CAN COMMUNICATION LINE".
NO >> GO TO 2.
Item name Condition Display value
ACCELE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8
BCIA0031E

DTC P1705 THROTTLE POSITION SENSOR
AT-117
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2.CHECK DTC WITH TCM
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. Depress accelerator pedal and read the value of “ACCELE
POSI”.
4. Select “SELF-DIAG RESULTS” mode for “A/T” with CONSULT-
II. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE".
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3.CHECK DTC WITH ECM
With CONSULT-II
1. Turn ignition switch ON. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “ENGINE” with CON-
SULT-II. Refer toEC-59, "
CONSULT-II Function (ENGINE)".
OK or NG
OK >> GO TO 4.
NG >> Check the DTC detected item. Refer toEC-59, "
CON-
SULT-II Function (ENGINE)".
lIf CAN communication line is detected, go toAT- 9 1 ,
"DTC U1000 CAN COMMUNICATION LINE".
4.CHECK DTC
PerformAT- 11 6 , "
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
ACCELE POSIReleased accelerator pedal. 0.0/8
Fully depressed accelerator pedal. 8.0/8
PCIA0070E
BCIA0030E

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

AT-168
CLOSED THROTTLE POSITION AND WIDE OPEN THROTTLE POSITION CIR-
CUIT
CLOSED THROTTLE POSITION AND WIDE OPEN THROTTLE POSITION CIR-
CUIT
PFP:18002
CONSULT-II Reference ValueECS00G24
Diagnostic ProcedureECS00G25
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE",AT-89, "Diagnostic Procedure
Without CONSULT-II".
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer toAT-91, "DTC U1000 CAN COMMUNICATION LINE".
NO >> GO TO 2.
2.CHECK THROTTLE POSITION SIGNAL CIRCUIT
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. Depress accelerator pedal and read the value of “CLSD THL
POS” and “W/O THL POS”.
OK or NG
OK >>INSPECTION END
NG >> Check the following. If NG, repair or replace damaged parts.
lPerform self-diagnosis for “ENGINE” with CONSULT-II. Refer toEC-62, "SELF-DIAGNOSTIC
MODE".
lOpen circuit or short to ground or short to power in harness or connectors.
lPin terminals for damage or loose connection with harness connector.
Item name Condition Display value
CLSD THL POSReleased accelerator pedal. ON
Fully depressed accelerator pedal. OFF
W/O THL POSFully depressed accelerator pedal. ON
Released accelerator pedal. OFF
Accelerator pedal operationItem name
CLSD THL POS W/O THL POS
Released ON OFF
Fully depressed OFF ON
PCIA0070E

BRAKE SIGNAL CIRCUIT
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BRAKE SIGNAL CIRCUITPFP:25320
CONSULT-II Reference ValueECS00G26
Diagnostic ProcedureECS00G27
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE",AT-89, "Diagnostic Procedure
Without CONSULT-II".
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer toAT-91, "DTC U1000 CAN COMMUNICATION LINE".
NO >> GO TO 2.
2.CHECK STOP LAMP SWITCH CIRCUIT
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. Read the ON/OFF switching action of “BRAKE SW”.
OK or NG
OK >>INSPECTION END
NG >> GO TO 3.
3.CHECK STOP LAMP SWITCH
Check continuity between stop lamp switch harness connector E109
terminals 1 and 2. Refer toAT- 1 7 4 , "
Wiring Diagram—AT—NON-
DTC".
Check stop lamp switch after adjusting brake pedal — refer to
BR-6, "
BRAKE PEDAL".
OK or NG
OK >> Check the following. If NG, repair or replace damaged
parts.
lHarness for short or open between battery and stop lamp switch.
lHarness for short or open between stop lamp switch and combination meter.
l10A fuse (No.20, located in fuse block).
NG >> Repair or replace stop lamp switch.
Item name Condition Display value
BRAKE SWDepressed brake pedal. ON
Released brake pedal. OFF
Item name Condition Display value
BRAKE SWDepressed brake pedal. ON
Released brake pedal. OFF
PCIA0070E
Condition Continuity
When brake pedal is depressed Yes
When brake pedal is released No
SCIA2144E

AT-170
1ST POSITION SWITCH
1ST POSITION SWITCH
PFP:31918
CONSULT-II Reference ValueECS00I5W
Diagnostic ProcedureECS00I5X
1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE".
Is any malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer toAT-91, "DTC U1000 CAN COMMUNICATION LINE".
NO >> GO TO 2.
2.CHECK 1ST POSITION SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Read out “1 POSITION SW”.
Check the signal of the overdrive control switch is indicated
properly.
Without CONSULT-II
1. Turn ignition switch ON. (Do not start engine)
2. Check voltage between A/T control device connector terminal and ground. Refer toAT- 1 7 4 , "
Wiring Dia-
gram—AT—NONDTC".
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3.CHECK 1ST POSITION SWITCH
1. Turn ignition switch OFF.
2. Disconnect A/T control device connector.
3. Check continuity between A/T control device connector M79 terminals 9 and 10.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace 1st position switch.
Item name Condition Display value
1 POSITION SWSelector lever in “1” position. ON
Selector lever in other positions. OFF
Item name Condition Display value
1 POSITION SWSelector lever in “1” position. ON
Selector lever in other positions. OFF
SCIA7305E
Item Connector Terminal Condition Data (Approx.)
A/T device M79 9 - GroundSelector lever in “1” position. 0 V
Selector lever in other positions. Battery voltage
Condition Continuity
Selector lever in “1” position. Yes
Selector lever in other positions. No

AT-172
OVERDRIVE CONTROL SWITCH
OVERDRIVE CONTROL SWITCH
PFP:25130
CONSULT-II Reference ValueECS00HQY
Diagnostic ProcedureECS00HQZ
1.CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE".
Is any malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer toAT-91, "DTC U1000 CAN COMMUNICATION LINE".
NO >> GO TO 2.
2.CHECK OVERDRIVE CONTOROL SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON.
2. Select “ECU INPUT SIGNALS” in “DATA MONITOR” mode for
“A/T” with CONSULT-II.
3. Read out “OD CONT SW”.
Check the signal of the overdrive control switch is indicated
properly.
Without CONSULT-II
1. Turn ignition switch ON. (Do not start engine)
2. Check voltage between A/T control device connector terminal and ground. Refer toAT- 1 7 4 , "
Wiring Dia-
gram—AT—NONDTC".
OK or NG
OK >> GO TO 5.
NG >> GO TO 3.
3.CHECK OVERDRIVE CONTROL SWITCH
1. Turn ignition switch OFF.
2. Disconnect A/T control device connector.
3. Check continuity between A/T control device connector M79 terminals 7 and 8.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace overdrive control switch.
Item name Condition Display value
OD CONT SWHolding overdrive control switch ON
Releasing overdrive control switch OFF
Item name Condition Display value
OD CONT SWHolding overdrive control switch ON
Releasing overdrive control switch OFF
SCIA7305E
Item Connector Terminal Condition Data (Approx.)
A/T device M79 7 - GroundReleasing overdrive control switch Battery voltage
Holding overdrive control switch 0V
Condition Continuity
Holding overdrive control switch Yes
Releasing overdrive control switch No

TROUBLE DIAGNOSIS FOR SYMPTOMS
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Data are reference value and are measured between each terminal and ground.
OD OFF Indicator Lamp Does Not Come OnECS00G2B
SYMPTOM:
OD OFF indicator lamp does not come on for about 2 seconds when turning ignition switch ON.
DIAGNOSTIC PROCEDURE
1.CHECK CAN COMMUNICATION LINE
Perform self-diagnosis. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE",AT-89, "Diagnostic Procedure
Without CONSULT-II".
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line. Refer toAT-91, "DTC U1000 CAN COMMUNICATION LINE".
NO >> GO TO 2.
2.CHECK OD OFF INDICATOR LAMP CIRCUIT
Check combination meter. Refer toDI-4, "
COMBINATION METERS".
OK or NG
OK >> GO TO 3
NG >> Repair or replace damaged parts.
3.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 >>INSPECTION END
NG >> Repair or replace damaged parts.
Engine Cannot Be Started in “P” or “N” PositionECS00G2C
SYMPTOM:
lEngine cannot be started with selector lever in “P” or “N” position.
lEngine can be started with selector lever in “R”, “D”, “3”, “2” or “1” position.
DIAGNOSTIC PROCEDURE
1.CHECK SELF-DIAGNOSIS RESULTS
Perform self-diagnosis. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE",AT-89, "Diagnostic Procedure
Without CONSULT-II".
Do the self-diagnosis results indicate PNP switch?
YES >> Check malfunctioning system. Refer toAT-99, "DTC P0705 PARK/NEUTRAL POSITION
SWITCH".
NO >> GO TO 2.
TerminalWire
colorItem Condition Data (Approx.)
3 L CAN-H – –
4GRK-line (CONSULT-
II signal)The terminal is connected to the data link connector for CONSULT-II. –
7LGBack-up lamp
relaySelector lever in “R” position. 0V
Selector lever in other positions. Battery voltage
8 P CAN-L – –
9BRStarterrelaySelector lever in “N” or “P” position. Battery voltage
Selector lever in other positions. 0V

AV-56
DIAGNOSIS SYSTEM
CONSULT-II Functions
EKS00Q6L
CONSULT-II FUNCTIONS
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II BASIC OPERATION PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. Select “MULTI AV” on “SELECT SYSTEM” screen. If “MULTI
AV” is not indicated, check the following items.
lNAVI contorol unit power supply and ground circuit.
lCONSULT-II data link connector (DLC) circuit
Refer toGI-50, "
CONSULT-II Data Link Connector (DLC) Cir-
cuit".
2. Select diagnosis item on “SELECT DIAG MODE” screen.
SELF-DIAG RESULTS
The self-diagnosis is started and self-diagnostic results are dis-
played by touching “START” after selecting “SELF-DIAG RESULTS”.
lIn CONSULT-II self-diagnosis, self-diagnostic results and error
history are displayed collectively.
lThe current malfunction indicates “CRNT”. The past malfunction
indicates “PAST”.
lIf DTC [U1000], [U1300] are detected, “0” is displayed at TIME.
If it is normal the next time ignition switch is ON, add 1 to the
TIME.
Diagnosis mode Description Reference
SELF DIAG RESULTSPerforms the connection diagnosis of communication circuit between NAVI
control unit and navigation system and displays the current and past malfunc-
tions collectively.AV- 5 6
DATA MONITORThe diagnosis of vehicle signal that is input to the NAVI control unit can be
performed.AV- 5 8
CAN DIAG SUPPORT MNTR The transmitting/receiving of CAN communication can be monitored.LAN-15
AV COMM MONITOR The transmitting/receiving of navigation system can be monitored.AV- 5 9
ECU PART NUMBER The part number of NAVI control unit can be checked.AV- 6 0
SKIB3672E
SKIB3673E
SKIB3674E