2010 NISSAN LATIO air condition

TROUBLE DIAGNOSISBRC-47
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TROUBLE DIAGNOSIS
How to Perform Trouble Diagnosis for Quick and Accurate RepairINFOID:0000000005612151
INTRODUCTION
The ABS/TCS/VDC system has an el ectronic control unit to control
major functions. The control unit accepts input signals from sensors
and controls actuator operation. It is also important to check for con-
ventional malfunctions such as air leaks in the booster or lines, lack
of brake fluid, or other malfunctions with the brake system.
It is much more difficult to diagnose a malfunction that occurs inter-
mittently rather than continuously. Most intermittent malfunctions are
caused by poor electrical connections or wiring. In this case, careful
checking of suspicious circuits may help prevent the replacement of
good parts.
A visual check only may not find t he cause of the malfunction, so a
road test should be performed.
Before undertaking actual checks, take just a few minutes to talk with
a customer who approaches with an ABS/TCS/VDC complaint. The
customer is a very good source of information, especially for inter-
mittent malfunctions. Through the talks with the customer, find out
what symptoms are present and under what conditions they occur.
Start your diagnosis by looking fo r “conventional” malfunctions first.
This is one of the best ways to troubleshoot brake malfunctions on
an ABS/TCS/VDC equipped vehicle. Also check related Service Bul-
letins for information.
SEF233G
SEF234G
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TROUBLE DIAGNOSISBRC-61
< SERVICE INFORMATION > [VDC/TCS/ABS]
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6. The self-diagnostic results are displayed. • When “NO DTC IS DETECTED” is displayed, check the ABS warning lamp, SLIP indicator lamp and
VDC OFF indicator lamp.
7. Conduct the appropriate inspection from the display item list, and repair or replace the malfunctioning
component.
8. Start engine and drive at approximately 30 km /h (19 MPH) for approximately 1 minute.
CAUTION:
• When a wheel sensor “short-circuit” is detected, if the vehicle is not driven at 30 km/h (19 MPH)
for at least 1 minute, the ABS warn ing lamp will not turn off even if the malfunction is repaired.
9. Turn ignition switch OFF to prepare for erasing the memory.
10. Start the engine and touch “ABS”, “SELF-DIAG RESULTS”, “ERASE” in order on the CONSULT-III screen to erase the error memory.
If “ABS” is not indicated, go to GI-36, "
CONSULT-III Data Link Connector (DLC) Circuit".
CAUTION:
If the error memory is not erased, re -conduct the operation from step 5.
11. For the final inspection, drive at approximately 30 km/h (19 MPH) for approximately 1 minute and confirm
that the ABS warning lamp, SLIP indicator lamp, and VDC OFF indicator lamp are off.
Display Item List
Self-diagnostic item Malfunction detecting condition Check system
RR RH SENSOR 1
[C1101] Circuit of rear RH wheel sensor is open.
BRC-67, "
Wheel Sensor
System Inspection"
(Note 1)
RR LH SENSOR 1
[C1102]
Circuit of rear LH wheel sensor is open.
FR RH SENSOR 1
[C1103] Circuit of front RH wheel sensor is open.
FR LH SENSOR 1
[C1104] Circuit of front LH wheel sensor is open.
RR RH SENSOR 2
[C1105] Circuit of rear RH wheel sensor is shorted, or sensor power volt-
age is unusua
l. ABS actuator and electric unit (control unit) cannot
identify sensor pulses, because of large gap between wheel sen-
sor and sensor rotor.
RR LH SENSOR 2
[C1106] Circuit of rear LH wheel sensor is shorted, or sensor power volt-
age is unusua
l. ABS actuator and electric unit (control unit) cannot
identify sensor pulses, because of large gap between wheel sen-
sor and sensor rotor.
FR RH SENSOR 2
[C1107] Circuit of front RH wheel sensor is shorted, or sensor power volt-
age is unusua
l. ABS actuator and electric unit (control unit) cannot
identify sensor pulses, because of large gap between wheel sen-
sor and sensor rotor.
FR LH SENSOR 2
[C1108] Circuit of front LH wheel sensor is shorted, or sensor power volt-
age is unusua
l. ABS actuator and electric unit (control unit) cannot
identify sensor pulses, because of large gap between wheel sen-
sor and sensor rotor.
BATTERY VOLTAGE
[ABNORMAL]
[C1109] ABS actuator and electric unit (con
trol unit) power voltage is too
low. BRC-75, "
ABS/TCS/VDC
Control Unit
Power and
Ground Systems Inspec-
tion"
CONTROLLER FAILURE
[ C 111 0 ] Internal malfunction of ABS actuat
or and electric unit (control
unit). BRC-68, "ABS/TCS/VDC
Control Unit Inspection"
PUMP MOTOR
[ C 1111 ]During actuator motor operation with ON, when actuator motor
turns OFF or when control line fo
r actuator motor relay is open. BRC-73, "Actuator Mo-
tor, Motor Relay, and Cir-
cuit Inspection"During actuator motor operation with OFF, when actuator motor
turns ON or when control line for relay is shorted to ground.
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TROUBLE DIAGNOSISBRC-65
< SERVICE INFORMATION > [VDC/TCS/ABS]
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× : Applicable
–: Not applicable
ACTIVE TEST
CAUTION:
• Do not perform active test while driving vehicle.
• Make sure to completely bleed air from brake system.
• The active test cannot be performed with the AB S warning lamp, VDC indicator lamp, SLIP indicator
lamp or brake warning lamp on.
• ABS warning lamp, VDC OFF indicator lamp, SLIP indicator lamp and brake warning lamp are on
during active test.
NOTE:
• When active test is performed while depressing the pedal, the pedal depression amount will change. This is normal. (Only solenoid valve and ABS motor)
• “TEST IS STOPPED” is displayed 10 seconds after operation start.
• After “TEST IS STOPPED” is displayed, to perform test again, touch BACK.
Test Item
SOLENOID VALVE
• When performing an active test of the ABS function, select “MAIN SIGNALS” for each test item.
• For ABS solenoid valve, touch “Up”, “Keep”, and “Dow n” on the display screen. For ABS solenoid valve
(ACT), touch “Up”, “ACT UP ”, “ACT KEEP” and confirm that solenoid valves operate as shown in the table
below.
CRANKING SIG
(On/Off) ——
×Cranking condition (On/Off) status is displayed.
FLUID LEV SW
(On/Off) ×
— ×Brake fluid level switch (On/Off) status is dis-
played.
PARK BRAKE SW
(On/Off) ×
— ×Parking brake switch (On/Off) status is displayed.
USV[FL-RR]
(On/Off) ——
×Primary side USV solenoid valve (On/Off) status is
displayed.
USV[FR-RL]
(On/Off) ——
×Secondary side USV solenoid valve (On/Off) sta-
tus is displayed.
HSV[FL-RR]
(On/Off) ——
×Primary side HSV solenoid valve (On/Off) status is
displayed.
HSV[FR-RL]
(On/Off) ——
×Secondary side HSV solenoid valve (On/Off) sta-
tus is displayed.
V/R OUTPUT
(On/Off) ——
×Valve relay operation signal (On/Off) status is dis-
played.
M/R OUTPUT
(On/Off) ——
×Motor relay operation signal (On/Off) status is dis-
played.
ENGINE RPM
(rpm) ×
— ×Engine speed judged by CAN communication sig-
nal is displayed.
Operation ABS solenoid va
lve ABS solenoid valve (ACT)
Up Keep Down Up ACT UP ACT KEEP
FR RH SOL FR RH IN SOL Off On On — —
—
FR RH OUT SOL Off Off On* — — —
USV [FR-RL] Off Off On* — — —
HSV [FR-RL] Off Off On* — — —
FR LH SOL FR LH IN SOL Off On On — —
—
FR LH OUT SOL Off Off On* — — —
USV [FL-RR] Off Off On* — — —
HSV [FL-RR] Off Off On* — — —
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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
BRC-69
< SERVICE INFORMATION > [VDC/TCS/ABS]
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Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> Inspection End.
2.CHECK WHEEL SENSORS
Check all wheel sensors. Refer to BRC-67, "
Wheel Sensor System Inspection".
OK or NG
OK >> Replace ABS actuator and electric unit (control unit). Refer to BRC-89, "Removal and Installa-
tion".
NG >> Repair or replace as necessary.
Steering Angle Sensor System InspectionINFOID:0000000005612162
INSPECTION PROCEDURE
1.SELF-DIAGNOSIS RESULT CHECK
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 3.
NO >> GO TO 2.
2.DATA MONITOR CHECK
Conduct “DATA MONITOR” of t he “STR ANGLE SIG” to check if the status is normal.
OK or NG
OK >> Inspection End.
NG >> GO TO 3.
3.CONNECTOR INSPECTION
1. Disconnect the ABS actuator and el ectric unit (control unit) and steering angle sensor connectors.
2. Check the terminals for deformation, disconnection, looseness or damage.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace as necessary.
4.CHECKING STEERING ANGLE SENSOR POWER AND GROUND
EMERGENCY BRAKE
VARIANT CODING
Self-diagnosis results
Self-diagnosis results
ST ANGLE SEN CIRCUIT ST ANGLE SEN SIGNAL
Steering condition Data monitor
Straight-ahead -2.5 ° to +2.5 °
Turn wheel 90 ° to the right. Approx. +90°
Turn wheel 90 ° to the left. Approx. -90°
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TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS
BRC-71
< SERVICE INFORMATION > [VDC/TCS/ABS]
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NG >> Repair or replace as necessary.
3.CHECK YAW RATE/SIDE/DECEL G SENSOR POWER SUPPLY CIRCUIT
Check voltage between yaw rate/side/decel G sensor connector B3
terminal 4 and ground.
Is the inspection result normal?
YES >> GO TO 4
NO >> Repair or replace malfunctioning components.
4.CHECK YAW RATE/SIDE/DECEL G SENSOR GROUND SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Check resistance between yaw rate/side/decel G sensor con- nector B3 terminal 1 and ground.
Is the inspection result normal?
YES >> GO TO 5
NO >> Repair or replace malfunctioning components.
5.CHECK YAW RATE/SIDE/DECEL G SENSOR HARNESS
1. Check continuity between ABS actuator and electric unit (control unit) connector E33 (A) terminals 14 and 25 and yaw rate/side/
decel G sensor connector B3 (B) terminals 2 and 3.
2. Check continuity between ABS actuator and electric unit (control unit) connector E33 (A) terminals 14, 25 and ground.
Is the inspection result normal?
YES >> GO TO 6
NO >> Repair or replace malfunctioning components.
6.CHECK DATA MONITOR
1. Connect Yaw rate/side/decel G sensor and ABS act uator and electric unit (control unit) connectors.
Yaw rate/side/decel G sensor
Ground Condition Vol tag e
(Approx.)
Connector Terminal
B3 4—Ignition switch:
ON Battery voltage
Ignition switch: OFF 0V
ALFIA0019ZZ
Yaw rate/side/decel G sensor
GroundContinuity
Connector Terminal
B3 1— Yes
ALFIA0020ZZ
ABS actuator and electric unit
(control unit) Yaw rate/side/decel G sensor
Continuity
Connector Terminal Connector Terminal
E33 (A) 14
B3 (B) 2
Ye s
25 3
ABS actuator and electric unit (control unit)
Ground Continuity
Connector Terminal
E33 (A) 14
—No
25
ALFIA0021ZZ
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BRC-72
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
2. Select “YAW RATE SEN”, “SIDE G-SENSOR” in “Data Monitor” and check Yaw rate/side/decel G sensor
signal.
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-89, "Removal and Installa-
tion".
NO >> Replace Yaw rate/side/decel G sensor. Refer to BRC-92, "
Removal and Installation".
Solenoid and VDC Change-Over Valve System InspectionINFOID:0000000005612164
INSPECTION PROCEDURE
1.SELF-DIAGNOSIS RESULT CHECK
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> Inspection End.
2.CONNECTOR INSPECTION
1. Disconnect ABS actuator and electric unit (control unit) connector.
2. Check the terminals for deformati on, disconnection, looseness or damage.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace as necessary.
3.CHECKING SOLENOID POWER AND GROUND
Vehicle condition Yaw rate sensor (Data monitor) Side G sensor (Data monitor)
Stopped Approx. 0 d/s
Approx. 0 m/s
2
Turning right Negative valueNegative value
Turning left Positive valuePositive value
Self-diagnosis results
FR LH IN ABS SOL
FR LH OUT ABS SOL RR RH IN ABS SOL
RR RH OUT ABS SOL FR RH IN ABS SOL
FR RH OUT ABS SOL RR LH IN ABS SOL
RR LH OUT ABS SOL USV LINE [FL-RR]
USV LINE [FR-RL]
HSV LINE [FL-RR]
HSV LINE [FR-RL] MAIN RELAY
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BRC-74
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
2. Check resistance between ABS actuator and electric unit (con-
trol unit) connector E33 and ground.
OK or NG
OK >> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit (control
unit). Refer to BRC-89, "
Removal and Installation".
NG >> Repair the circuit.
Stop Lamp Switch System InspectionINFOID:0000000005612166
INSPECTION PROCEDURE
1.SELF-DIAGNOSIS RESULT CHECK
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> Inspection End.
2.CONNECTOR INSPECTION
1. Disconnect the ABS actuator and electric unit (control unit) and stop lamp switch connectors.
2. Check the terminals for deformati on, disconnection, looseness or damage.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace as necessary.
3.CHECK STOP LAMP SWITCH CIRCUIT
1. Connect stop lamp switch connector.
2. Check voltage between ABS actuator and electric unit (control unit) connector E33 terminal 20 and ground.
Is the inspection result normal?
YES >> Replace ABS actuator and electric unit (control unit). Refer to BRC-89, "Removal and Installa-
tion".
NO >> GO TO 4
4.CHECK STOP LAMP SWITCH CIRCUIT FOR OPEN ABS actuator and electric
unit (control unit) harness connector E33 Body
ground Measured
value
(Approx.)
1—0 Ω
WFIA0502E
Self-diagnosis results
STOP LAMP SW
ABS actuator and elec-tric unit (control unit) Ground Condition Vol tag e
(Approx.)
Connector Terminal
E33 20 — Brake pedal depressed Battery voltage
Brake pedal released 0V
ALFIA0016ZZ
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BRC-76
< SERVICE INFORMATION >[VDC/TCS/ABS]
TROUBLE DIAGNOSIS FOR
SELF-DIAGNOSTIC ITEMS
OK or NG
OK >> Check the battery for loose terminals, low voltage, etc. Repair as necessary.
NG >> Repair the circuit.
Brake Fluid Level Switch System InspectionINFOID:0000000005612168
INSPECTION PROCEDURE
1.SELF-DIAGNOSIS RESULT CHECK
1. Check the brake reservoir tank fluid level. If the level is low, add brake fluid.
2. Erase the self-diagnosis results and check the self-diagnosis results.
Is the above displayed in the self-diagnosis display items?
YES >> GO TO 2.
NO >> Inspection End.
2.CONNECTOR INSPECTION
1. Disconnect the ABS actuator and electric unit (cont rol unit) and brake fluid level switch connectors.
2. Check the terminals for deformati on, disconnection, looseness or damage.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace as necessary.
3.CHECK BRAKE FLUID LEVEL SWITCH
1. Turn ignition switch OFF.
2. Check continuity between brake fluid level switch terminals 1 and 2.
Is the inspection result normal?
YES >> GO TO 4
NO >> Replace brake fluid level switch.
4.CHECK BRAKE FLUID LEVEL SWITCH HARNESS
1. Disconnect combination meter connector.
2. Check continuity between combination meter connector M24 (A) terminal 25 and brake fluid level switch connector E40 (B) termi-
nal 1.
3. Check continuity between combination meter connector M24 (A) terminal 25 and ground.
Is the inspection result normal?
Power supply 2
—Battery voltage (Approx. 12V)
3
Ground 1
Continuity should exist.
4
Self-diagnosis results
BR FLUID LEVEL LOW
Brake fluid level switch terminals ConditionContinuity
1— 2 Brake fluid reservoir full No
Brake fluid reservoir empty Yes
AWFIA0621ZZ
25 - 1 : Continuity should exist.
25 - Ground : Continuity should not exist.
AWFIA0622ZZ
Revision: January 20102010 Versa