2005 NISSAN X-TRAIL ignition

TROUBLE DIAGNOSIS
BRC-109
[ESP/TCS/ABS]
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Inspection 15 CAN Communication Circuit, ESP/TCS/ABS Control Unit and
Steering Angle Sensor
EFS005WK
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect the ESP/TCS/ABS control unit connector, and check the terminal for
deformation, disconnection, looseness, and so on. If there is a malfunction, repair or replace the terminal.
2. Reconnect connector to perform self-diagnosis.
Is
“CAN COMM CIRCUIT” or “ST ANG SEN COM CIR” displayed in the self-diagnosis display items?
YES >> Print out the self-diagnostic results, and refer to BRC-56, "CAN COMMUNICATION" .
NO >> Connector terminal connection is loose, damaged, open, or shorted.
Component CheckEFS005WL
ESP OFF SWITCH

Disconnect the ESP OFF switch connector. Check for continuity
between the terminal No. 1 and No. 2.
ESP RELAY BOX
Disconnect the relay box connectors. Check for continuity, resis-
tance value, and insulation between any pair of terminals in the relay
box. 1 - 2 : Pressing the switch will make a continu-
ity, and releasing it will stop the continuity.
SFIA1822E
SFIA1823E

TROUBLE DIAGNOSIS
BRC-113
[ESP/TCS/ABS]
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4. CHECK ABS WARNING LAMP DISPLAY
Make sure that the warning lamp turns off approximately 2 second after the key switch is turned on or when
driving.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer to BRC-81, "
SELF-DIAGNOSIS" .
Symptom 2: Unexpected Pedal ReactionEFS005WN
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke. Refer to BR-6, "
On-Vehicle Inspection and Adjustment" .
Is the stroke too large?
YES >>
Bleed air from the brake piping. Refer to BR-9, "Bleeding Brake System" .

Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake sys-
tem fluid leakage, etc. Repair if necessary. Refer to Brake pedal: BR-6, "
BRAKE PEDAL" ,
brake booster and master cylinder: BR-23, "
BRAKE BOOSTER" .
NO >> GO TO 2.
2. PERFORMANCE CHECK
Disconnect ESP/TCS/ABS control unit connector to deactivate ABS. Check if braking force is normal in this
condition. Connect connector after inspection.
OK or NG
OK >> GO TO 3. Wheel Sensor Inspection in Refer to BRC-91, "Inspection 1 Wheel Sensor System" .
NG >> Check brake system.
Symptom 3: Longer Stopping DistanceEFS005WO
CAUTION:
The stopping distance on slippery road surfaces might be longer with the ABS operating than when
the ABS is not operating.
1. PERFORMANCE CHECK
Turn ignition switch OFF. Disconnect ESP/TCS/ABS control unit connector to deactivate ABS. In this condi-
tion, check stopping distance. After inspection, connect connector.
OK or NG
OK >> GO TO BRC-112, "Symptom 1: ABS Works Frequently" .
NG >>

Bleed air from the brake piping. Refer to BR-9, "Bleeding Brake System" .

Check brake system.
Symptom 4: ABS Does Not WorkEFS005WP
CAUTION:
ABS does not operate when speed is 10 km/h or lower.
1. CHECK ABS WARNING LAMP DISPLAY
Make sure that the warning lamp turns off approximately 2 second after the key switch is turned on or when
driving.
OK or NG
OK >> GO TO 3. Check wheel sensor and sensor rotor in Refer to BRC-91, "Inspection 1 Wheel Sensor
System" .
NG >> Perform self-diagnosis. Refer to BRC-81, "
SELF-DIAGNOSIS" .
Symptom 5: Pedal Vibration and ABS Operation NoiseEFS005WQ
CAUTION:
Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightly
depressed (just place a foot on it). However, this is normal.

BRC-114
[ESP/TCS/ABS]
TROUBLE DIAGNOSIS


When shifting gears

When driving on slippery road

During cornering at high speed

When passing over bumps or grooves (Approx. 50 mm or more)

When pulling away just after starting engine (Approx. 10 km/h or more)
1. SYMPTOM CHECK 1
Check if pedal vibration or operation sounds occur when the engine is started.
OK or NG
OK >> GO TO 2.
NG >> Perform self-diagnosis. Refer to BRC-81, "
SELF-DIAGNOSIS" .
2. SYMPTOM CHECK 2
Check symptoms when electrical component (headlamps, etc.) Switches are operated.
Do symptoms occur?
YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit. If there is,
move it farther away.
NG >> GO TO 3. Check wheel sensor and sensor rotor in Refer to BRC-91, "
Inspection 1 Wheel Sensor
System" .
Symptom 6: ESP OFF Indicator Lamp Does Not IlluminateEFS005WR
INSPECTION PROCEDURE
1. ESP OFF INDICATOR LAMP INSPECTION
Disconnect ESP/TCS/ABS control unit connector.
Does ABS warning lamp and ESP OFF indicator lamp illuminate?
YES >> ESP/TCS/ABS control unit malfunction. Repair or replace the control unit.
NO >> Combination meter system malfunction. Check the combination meter.
Symptom 7: SLIP Indicator Lamp Does Not IlluminateEFS005WS
INSPECTION PROCEDURE
1. SLIP INDICATOR LAMP CONNECTOR INSPECTION
Check connectors for ESP/TCS/ABS control unit and meter vehicle-side harness.
Is inspection result OK?
YES >> GO TO 2.
NO >> Repair or replace the disconnected connector.
2. SLIP INDICATOR LAMP POWER CIRCUIT INSPECTION
Disconnect the meter connector. Check that the voltage between the
vehicle-side harness terminal and body ground is battery voltage
(Approx. 12V).
Is inspection result OK?
YES >> GO TO Refer to BRC-109, "Inspection 15 CAN Commu-
nication Circuit, ESP/TCS/ABS Control Unit and Steer-
ing Angle Sensor" .
NO >>

Fuse inspection

Inspection for harness and connectors between fuse
block and meter

Check the power supply circuit (battery and ignition
switch circuit).SFIA2207E

TROUBLE DIAGNOSIS
BRC-115
[ESP/TCS/ABS]
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BRC

Symptom 8: Vehicle Jerks During ESP/TCS/ABS ControlEFS005WT
1. SYMPTOM CHECK 1
Check if the vehicle jerks during ESP/TCS/ABS control.
OK or NG
OK >> Normal
NG >> GO TO 2.
2. CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnostic of ESP/TCS/ABS control unit.
Are self-diagnostic results indicated?
YES >> Check the corresponding items, make repairs, and perform ESP/TCS/ABS control unit self-diag-
nosis.
NO >> GO TO 3.
3. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect the ESP/TCS/ABS control unit connector and check the terminal for
deformation, disconnection, looseness, and so on. If there is a malfunction.
2. Securely connect connectors. Perform ESP/TCS/ABS control unit self-diagnosis.
Are self-diagnostic results indicated?
YES >> If poor contact, damage, open or short circuit of connector terminal is found, repair or replace.
NO >> GO TO 4.
4. CHECK ECM AND A/T SELF-DIAGNOSIS RESULT
Perform ECM and A/T self-diagnosis.
Are self-diagnostic results indicated?
YES >> Check the corresponding items, make repairs.
NO >> Replace ESP/TCS/ABS control unit and perform to self-diagnosis again.
ECM self-diagnosis
QR engine (With EURO-OBD) :EC-73, "
TROUBLE DIAGNOSIS"
QR engine (Without EURO-OBD) :EC-572, "TROUBLE DIAGNOSIS"
YD engine (With EURO-OBD) :EC-1007, "TROUBLE DIAGNOSIS"
YD engine (Without EURO-OBD) :EC-1378, "TROUBLE DIAGNOSIS"
A/T self-diagnosis
EURO-OBD :AT-40, "
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION"
EXC.F/EURO-OBD :AT-242, "ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION"

REFRIGERATION SYSTEM
ATC-19
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V-6 Variable Displacement Compressor (With Gasoline Engine: CWV-615M
Compressor)
EJS000TF
GENERAL INFORMATION
1. The V-6 variable compressor differs from previous units. The vent temperatures of the V-6 variable com-
pressor do not drop too far below 5°C (41°F) when:
Evaporator intake air temperature is less than 20°C (68°F).
Engine is running at speeds less than 1,500 rpm.
This is because the V-6 compressor provides a means of “capacity” control.
2. The V-6 variable compressor provides refrigerant control under varying conditions. During cold winters, it
may not produce high refrigerant pressure discharge (compared to previous units) when used with air
conditioning systems.
3. A “clanking” sound may occasionally be heard during refrigerant charge. The sound indicates that the tilt
angle of the wobble (swash) plate has changed and is not a malfunction.
4. For air conditioning systems with the V-6 compressor, the clutch remains engaged unless: the system
main switch, fan switch or ignition switch is turned OFF. When ambient (outside) temperatures are low or
when the amount of refrigerant is insufficient, the clutch is disengaged to protect the compressor.
5. A constant range of suction pressure is maintained when engine speed is greater than a certain value. It
normally ranges from 147 to 177 kPa (1.47 to 1.77 bar, 1.5 to 1.8 kg/cm
2 , 21 to 26 psi) under varying con-
ditions.
In previous compressors, however, suction pressure was reduced with increases in engine speed.

TROUBLE DIAGNOSIS
ATC-55
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Auto Amp. Terminals and Reference ValueEJS004GS
Measure voltage between each terminal and ground by following ter-
minals and reference value for auto amp.
PIN CONNECTOR TERMINAL LAYOUT
TERMINALS AND REFERENCE VALUE FOR AUTO AMP.
RJIA2824E
RJIA0489E
Te r m i -
nal No.Wire
colorItemIgnition
switchConditionVoltage
(V)
1 BR/Y Power supply for IGN ON - Battery voltage
2 L Power supply for BAT OFF - Battery voltage
3 B Ground ON - Approx. 0
4 L/R A/C (Compressor ON) signal ONCompressor: ON Approx. 0
Compressor: OFF Approx. 5
5WPower supply for each door
motorON - Battery voltage
8 P In-vehicle sensor - - -
9 R/B Ambient sensor - - -
10 OR Sunload sensor - - -
11 B Illumination ground ON Light switch: ON Approx. 0
12 R/L Power supply for illumination ON Light switch: ON Approx. 12
15 G LAN signal ON -Approx. 5.5
17 L/YFan control amp. control sig-
nalONFan speed: 1-24th Approx. 2.5 - 3.5
Fan speed: 25th Approx. 9.0
18 R Blower motor feed back ON Fan speed: 1st Approx. 8.0
19 LG/BFan ON signal (With gasoline
engine)ONBlower fan: ON Approx. 0
Blower fan: OFF Approx. 5
HAK0652D

ATC-56
TROUBLE DIAGNOSIS

20 L/W Power supply for IGN2 ON - Battery voltage
21 GY Water temperature sensor ONAt idle [after warming up,
approx. 80°C (176°F)]
CAUTION:
The waveforms vary depend-
ing on coolant temperature
22 LG/BRear window defogger ON
signalONRear window defogger: ON Approx. 0
Rear window defogger: OFF Approx. 12
23 B/WRear window defogger feed
back signalONRear window defogger: ON Approx. 12
Rear window defogger: OFF Approx. 0
24 B/Y Sensor ground ON - Approx. 0
25 BR/Y Intake sensor - - -
28 YPower supply for ambient
temperature displayON - Approx. 5
30 PU Compressor feed back signal ON-Approx. 0
When refrigerant pressure sen-
sor connector is disconnectedApprox. 5 Te r m i -
nal No.Wire
colorItemIgnition
switchConditionVoltage
(V)
SKIA0056J

TROUBLE DIAGNOSIS
ATC-57
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Self-diagnosis FunctionEJS004GT
DESCRIPTION
The self-diagnostic system diagnoses sensors, door motors, blower motor, etc. by system line.
Self-diagnosis is step-1 to 7. There are two ways of changing method during self-diagnosis.

Switching to self-diagnosis step-1 to 4.
Shifting from usual control to the self-diagnostic system is accomplished by starting the engine (turning
the ignition switch from OFF to ON) and pressing A/C switch for at least 5 seconds. The A/C switch must
be pressed within 10 seconds after starting the engine (ignition switch is turned ON). This system will be
canceled by either pressing intake switch or turning the ignition switch OFF. Shifting from one step to
another is accomplished be means of turning fan control dial, as required.

Switching to self-diagnosis step-5 to 7 (Auxiliary mechanism).
Shifting from usual control to the self-diagnostic system is accomplished by starting the engine (turning
the ignition switch from OFF to ON) and pressing intake switch for at least 5 seconds. The intake switch
must be pressed within 10 seconds after starting the engine (ignition switch is turned ON). This system
will be canceled by either pressing A/C switch or turning the ignition switch OFF. Shifting from one step to
another is accomplished by means of turning fan control dial, as required.