NISSAN NAVARA 2005 Repair Workshop Manual

DTC P1846 ATF PRESSURE SWITCH 6
AT-163
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Diagnostic ProcedureECS00G21
1.CHECK INPUT SIGNAL
With CONSULT-II
1. Start engine.
2. Select “ECU INPUT SIGNALS” or “MAIN SIGNALS” in “DATA
MONITOR” mode for “A/T” with CONSULT-II.
3. Drive vehicle in the “D” position (2nd
3rd gear), and confirm
the ON/OFF actuation of “ATF PRES SW 6”.
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 6 2 , "
DTC Confirmation Procedure".
OK or NG
OK >>INSPECTION END
NG >> GO TO 2.
Item name Condition Display value
AT F P R E S S W 6High and low reverse clutch engaged.
Refer toAT- 1 7
.ON
High and low reverse clutch disengaged.
Refer toAT- 1 7
.OFFPCIA0067E

AT-164
MAIN POWER SUPPLY AND GROUND CIRCUIT
MAIN POWER SUPPLY AND GROUND CIRCUIT
PFP:00100
Wiring Diagram — AT — MAINECS00G22
MCWA0226E

MAIN POWER SUPPLY AND GROUND CIRCUIT
AT-165
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Data are reference value and are measured between each terminal and ground.
Diagnostic ProcedureECS00G23
1.CHECK TCM POWER SOURCE STEP 1
1. Turn ignition switch OFF.
2. Disconnect A/T assembly harness connector.
3. Check voltage between A/T assembly harness connector termi-
nals and ground.
OK or NG
OK >> GO TO 2.
NG >> GO TO 3.
2.CHECK TCM POWER SOURCE STEP 2
1. Disconnect A/T assembly harness connector.
2. Turn ignition switch ON. (Do not start engine.)
3. Check voltage between A/T assembly harness connector termi-
nals and ground.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
Terminal Wire color Item Condition Data (Approx.)
1SBPower supply
(Memory back-up)Always Battery voltage
2RPower supply
(Memory back-up)Always Battery voltage
5 B Ground Always 0V
6 Y Power supply– Battery voltage
–0V
10 B Ground Always 0V
Item Connector Terminal Voltage
TCM F361 - Ground
Battery voltage
2 - Ground
6 - Ground 0V
SCIA2104E
Item Connector Terminal Voltage
TCM F361 - Ground
Battery voltage 2 - Ground
6 - Ground
SCIA2105E

AT-166
MAIN POWER SUPPLY AND GROUND CIRCUIT
3.DETECT MALFUNCTIONING ITEM
Check the following.
lHarness for short or open between battery and A/T assembly harness connector F36 terminals 1, 2
lHarness for short or open between ignition switch and A/T assembly harness connector F36 terminal 6
l10A fuse (No. 25, located in fuse and fusible link block) and 10A fuse (No. 49, located in IPDM E/R)
lIgnition switch, Refer toPG-4, "POWER SUPPLY ROUTING CIRCUIT".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK TCM GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect A/T assembly harness connector.
3. Check continuity between A/T assembly harness connector ter-
minals and ground.
If OK, check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
5.DETECT MALFUNCTIONING ITEM
Check the following.
lA/T assembly harness connector terminals for damage or loose connection with harness connector.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.PERFORM SELF-DIAGNOSIS
Perform self-diagnosis. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE".
OK or NG
OK >>INSPECTION END
NG-1 >> Self-diagnosis does not activate: GO TO 7.
NG-2 >> DTC is displayed: Check the malfunctioning system. Refer toAT-80, "
SELF-DIAGNOSTIC
RESULT MODE".
Item Connector Terminal Continuity
TCM F36 5, 10 - Ground Yes
SCIA2106E

MAIN POWER SUPPLY AND GROUND CIRCUIT
AT-167
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7.CHECK TERMINAL CORD ASSEMBLY
1. Remove control valve with TCM. Refer toAT- 2 1 8 , "
Control Valve With TCM and A/T Fluid Temperature
Sensor 2".
2. Disconnect A/T assembly harness connector and TCM connector.
3. Check continuity between A/T assembly harness connector ter-
minals and TCM connector terminals.
4. Check continuity between A/T assembly harness connector ter-
minals and TCM connector terminals.
5. If OK, check harness for short to ground and short to power.
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 >> Replace open circuit or short to ground and short to power in harness or connectors.
Item Connector Terminal Continuity
A/T assembly harness connector F36 1
Ye s
TCM connector F502 9
A/T assembly harness connector F36 2
Ye s
TCM connector F502 10
A/T assembly harness connector F36 6
Ye s
TCM connector F502 4
SCIA5464E
Item Connector Terminal Continuity
A/T assembly harness connector F36 5
Ye s
TCM connector F504 21
A/T assembly harness connector F36 10
Ye s
TCM connector F504 22
SCIA5465E

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
AT-169
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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

1ST POSITION SWITCH
AT-171
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4.DETECT MALFUNCTIONING ITEM
Check the following. If any items are damaged, repair or replace damaged parts.
lHarness for short or open between combination meter connector M23 terminal 18 and A/T control device
connector M79 terminal 9.
lHarness for short or open between A/T control device connector M79 terminal 10 and ground.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK COMBINATION METER
Check the combination meter. Refer toDI-18, "
HOW TO PERFORM TROUBLE DIAGNOSIS".
OK or NG
OK >>INSPECTION END
NO >> Repair or replace damaged parts.

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