2007 NISSAN 350Z Brake Control System Workshop Manual

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-65
[TCS/ABS]
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Revision: 2006 November2007 350Z
ABS Actuator Relay or ABS Motor Relay Power SystemNFS0003C
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display item?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector, check terminal to see if it is deformed,
disconnected, loose, etc., and if there is an error, repair or replace the terminal.
2. Securely reconnect the connector and then perform self-diagnosis.
Is the result of self-diagnosis normal?
YES >> The connector terminal contact is loose, damaged, open or shorted.
NO >> GO TO 3.
3. CHECK ABS ACTUATOR RELAY OR ABS MOTOR RELAY POWER CIRCUIT
1. Disconnect ABS actuator and electric unit (control unit) connector E51.
2. For ABS actuator relay, measure the voltage between the con-
nector terminal 1 and ground. For ABS motor relay, measure the
voltage between connector terminal 15 and ground.
OK or NG
OK >> GO TO 4
NG >> Error in the circuit between battery and ABS actuator
and electric unit (control unit). Repair the circuit.
4. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT
Check continuity between ABS actuator and electric unit (control
unit) connector and ground.
OK or NG
OK >> Replace ABS actuator and electric unit (control unit).
NG >> Open or short in harness. Repair or replace the harness.
Self-diagnosis results
IN ABS SOL
OUT ABS SOL
PUMP MOTOR
MAIN RELAY
ABS actuator and electric unit (control unit) Ground Voltage
1, 15 —Battery voltage
(Approx. 12 V)
SFIA1882E
ABS actuator and electric unit (control unit) Ground Continuity
16, 30 — Yes
SFIA1883E

BRC-66
[TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 November2007 350Z
Stop Lamp Switch SystemNFS0003D
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Is the above displayed in the self-diagnosis display item?
YES >> GO TO 2.
NO >> INSPECTION END
2. CHECK CONNECTOR
1. Disconnect ABS actuator and electric unit (control unit) connector and stop lamp switch connector E111,
check the terminal for deformation, disconnection, looseness, and so on. If there is an error, repair or
replace the terminal.
2. Securely reconnect the connector and conduct self-diagnosis.
3. Start engine
4. Repeat pumping brake pedal carefully several time, then perform self-diagnosis again
Is the result of self-diagnosis normal?
YES >> The connector terminal contact is loose, damaged, open or shorted.
NO >> GO TO 3.
3. CHECK STOP LAMP SWITCH
1. Turn ignition switch OFF and disconnect stop lamp switch con-
nector E111.
2. Disconnect stop lamp switch connector
3. Check continuity between stop lamp switch connector terminal 3
and 4.
OK or NG
OK >> GO TO 4.
NG >> Replace stop lamp switch. Refer to BR-8, "
Components" .
Self-diagnosis results
STOP LAMP SW
Stop lamp switch Condition Continuity
3 – 4Release stop lamp switch
(When brake pedal is depressed.)Ye s
Push stop lamp switch
(When brake pedal is released.)No
SFIA3390E

TROUBLE DIAGNOSIS FOR SYSTEM
BRC-67
[TCS/ABS]
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Revision: 2006 November2007 350Z
4. CHECK STOP LAMP SWITCH CIRCUIT
1. Turn ignition switch OFF and disconnect ABS actuator and elec-
tric unit (control unit) connector E51.
2. Check voltage between ABS actuator and electric unit (control
unit) connector terminal and the ground.
OK or NG
OK >> INSPECTION END
NG >> Open or short in harness between ABS actuator and electric unit (control unit) and stop lamp
switch. Repair or replace the harness.
ABS Actuator and Electric Unit (Control Unit) 2NFS0003E
INSPECTION PROCEDURE
1. CHECK SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
When any item other than “EMERGENCY BRAKE” is indicated in self-diagnosis display, follow the instructions
below.
CAUTION:
“EMERGENCY BRAKE” is indicated when control unit itself is detected as an error. If this display item
is indicated, replace control unit.
Is the above displayed in the self-diagnosis display items?
YES >> Replace the ABS actuator and electric unit (control unit).
NO >> INSPECTION END
CAN Communication SystemNFS0003F
INSPECTION PROCEDURE
1. CHECK CONNECTOR
1. Turn ignition switch OFF, disconnect the ABS actuator and electric unit (control unit) connector, and check
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” displayed in the self-diagnosis display items?
YES >> Print out the self-diagnostic results, and refer to LAN-48, "CAN System Specification Chart" .
NO >> Connector terminal connection is loose, damaged, open, or shorted.
SFIA1884E
ABS actuator and electric unit (control unit) Ground Measurement condition Voltage
17 —Brake pedal depressed. Battery voltage (Approx. 12 V)
Brake pedal not depressed. Approx. 0 V
Self-diagnosis results
EMERGENCY BRAKE

BRC-68
[TCS/ABS]
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: 2006 November2007 350Z
Component InspectionNFS0003G
TCS OFF SWITCH

Turn ignition switch OFF, disconnect the TCS OFF switch con-
nector M9, and check continuity between terminals 1 and 2.
1 - 2 : Continuity should exist when pushing the
switch.
: Continuity should not exist when releasing
the switch.
SFIA3248E

TROUBLE DIAGNOSIS FOR SYMPTOMS
BRC-69
[TCS/ABS]
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Revision: 2006 November2007 350Z
TROUBLE DIAGNOSIS FOR SYMPTOMSPFP:00007
Excessive ABS Function Operation FrequencyNFS0003H
1. CHECK START
Check brake force distribution.
OK or NG
OK >> GO TO 2.
NG >> Check brake system.
2. CHECK FRONT AND REAR AXLE
Make sure there is no excessive play in the front and rear axles.
OK or NG
OK >> GO TO 3.
NG >> Repair.
3. CHECK WHEEL SENSOR AND SENSOR ROTOR
Wheel Sensor Inspection

Wheel sensor mount and damage inspection

Sensor rotor mount and damage inspection

Wheel sensor connector connection inspection

Wheel sensor harness inspection
OK or NG
OK >> GO TO 4.
NG >>

Replace wheel sensor or sensor rotor.

Repair harness.
4. CHECK ABS WARNING LAMP DISPLAY
Make sure the warning lamp turns off approximately 1 second after the ignition switch is turned on or when
driving.
OK or NG
OK >> Normal
NG >> Perform self-diagnosis. Refer to BRC-53, "
OPERATION PROCEDURE" .

BRC-70
[TCS/ABS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 November2007 350Z
Unexpected Pedal ReactionNFS0003I
1. CHECK BRAKE PEDAL STROKE
Check brake pedal stroke.
Is the stroke too big?
YES >>
Bleed air from the brake piping.

Check the brake pedal, brake booster, and master cylinder mount for play, looseness, and
brake system for fluid leaks, etc. If any malfunctions are found, make repairs.
NO >> GO TO 2.
2. CHECK FUNCTION
Disconnect the ABS actuator and electric unit (control unit) connector, and make sure the braking force is suf-
ficient when the ABS is not operating. After the inspection, reconnect the connector.
OK or NG
OK >> GO TO 3. CHECK WHEEL SENSOR AND SENSOR ROTOR in BRC-69, "Excessive ABS Func-
tion Operation Frequency" .
NG >> Check brake system.
The Braking Distance Is LongNFS0003J
CAUTION:
On slippery road surfaces, the stopping distance might be longer with the ABS operating than when
the ABS is not operating.
1. CHECK FUNCTION
Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. In this condition, check
stopping distance. After inspection, connect connector.
OK or NG
OK >> GO TO 3. CHECK WHEEL SENSOR AND SENSOR ROTOR in BRC-69, "Excessive ABS Func-
tion Operation Frequency" .
NG >>

Bleed air from the brake piping.

Check brake system.
The ABS Function Does Not OperateNFS0003K
CAUTION:
The ABS does not operate when the speed is 10 km/h (6 MPH) or less.
1. CHECK ABS WARNING LAMP DISPLAY
Make sure warning lamp turns off approximately 1 second after the ignition switch is turned on or when driv-
ing.
OK or NG
OK >> GO TO 3. CHECK WHEEL SENSOR AND SENSOR ROTOR in BRC-69, "Excessive ABS Func-
tion Operation Frequency" .
NG >> Perform self-diagnosis. Refer to BRC-53, "
OPERATION PROCEDURE" .

TROUBLE DIAGNOSIS FOR SYMPTOMS
BRC-71
[TCS/ABS]
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BRC
Revision: 2006 November2007 350Z
Pedal Vibration or ABS Operation Sound OccursNFS0003L
CAUTION:
Under the following conditions, when brake pedal is lightly depressed (just place a foot on it), ABS is
activated and vibration is felt. However, this is normal.

When shifting gears

When driving on slippery road

During cornering at high speed

When passing over bumps or grooves [50 mm (1.97 in) or more]

When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or higher]
1. SYMPTOM CHECK 1
Check if pedal vibration or operation sound occurs when the engine is started.
Does the symptom occur?
YES >> GO TO 2.
NO >> Perform self-diagnosis. Refer to BRC-53, "
OPERATION PROCEDURE" .
2. SYMPTOM CHECK 2
Check symptom when electrical component (headlamps, etc.) switches are operated.
Does the symptom occur when the electrical component (head lamp, etc.) switches are operated?
YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit (or its wir-
ing), and if there is, move it farther away.
NO >> GO TO 3. CHECK WHEEL SENSOR AND SENSOR ROTOR in BRC-69, "
Excessive ABS Func-
tion Operation Frequency" .
The Vehicle Jerks Around During TCS/ABS ControlNFS0003M
1. CHECK ENGINE SPEED SIGNAL
Conduct CONSULT-III ABS actuator and electric unit (control unit) “Data Monitor”.
Is the speed during idling 400 rpm or higher?
YES >> GO TO 3.
NO >> GO TO 2.
2. CHECK ECM SELF-DIAGNOSIS RESULT ITEM
Perform ECM self-diagnosis.
Are self-diagnosis items displayed?
YES >> Check the corresponding items. Refer to EC-81, "TROUBLE DIAGNOSIS" in “Engine Control
(EC section)”.
NO >> GO TO 3.
3. SYMPTOM CHECK 1
Check if the vehicle jerks during TCS/ABS control.
OK or NG
OK >> INSPECTION END
NG >> GO TO 4.
4. CHECK A/T SELF-DIAGNOSIS RESULT ITEM
Perform A/T self-diagnosis.
OK or NG
OK >> GO TO 5.
NG >> Check the corresponding items. Refer toAT- 4 0 , "
TROUBLE DIAGNOSIS" in “A/T”.

BRC-72
[TCS/ABS]
TROUBLE DIAGNOSIS FOR SYMPTOMS
Revision: 2006 November2007 350Z
5. SYMPTOM CHECK 2
Check if the vehicle jerks during TCS/ABS control.
OK or NG
OK >> INSPECTION END
NG >> GO TO 6.
6. CHECK SELF-DIAGNOSIS RESULT ITEM 1
Conduct self-diagnosis of the ABS actuator and electric unit (control unit).
Are self-diagnosis items displayed?
YES >> Check the corresponding items, make repairs, and re-conduct the ABS actuator and electric unit
(control unit) self-diagnosis.
NO >> GO TO 7.
7. CHECK CONNECTOR
1. Disconnect the ABS actuator and electric unit (control unit) connector and the ECM connectors, check the
terminals for deformation, disconnection, looseness, and so on. If there is an error, repair or replace the
connector.
2. Securely reconnect the connector and conduct self-diagnosis.
OK or NG
OK >> If the connector terminal contact is loose, damaged, open or shorted, repair or replace the con-
nector terminal.
NG >> GO TO 8.
8. CHECK SELF-DIAGNOSIS RESULT ITEM 2
Re-conduct the ABS actuator and electric unit (control unit) self-diagnosis.
Are self-diagnosis items displayed?
YES >> Repair or replace any non-standard items.
NO >> GO TO 9.
9. CHECK CIRCUIT BETWEEN ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) AND THE
ECM
Check CAN communication system. Refer to BRC-67, "
CAN Communication System" .
OK or NG
OK >> INSPECTION END
NG >> Connect the connector and re-conduct the ABS actuator and electric unit (control unit) self-diag-
nosis.