Infiniti F50. Manual — part 277
TROUBLE DIAGNOSIS
BRC-51
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BRC
5.
CHECKING MOTOR RELAY UNIT
Check motor relay as a unit. Refer to
.
OK or NG
OK
>> Check VDC/TCS/ABS control unit power circuit.
NG
>> Replace motor relay.
Inspection 9 Actuator Relay and Circuit
EFS001ZK
Inspection Procedure
1.
CHECKING SELF-DIAGNOSIS RESULTS (1)
Check self-diagnosis results.
Does “ACTUATOR RELAY CIRCUIT” appear on self-diagnosis results display?
YES
>> GO TO 2.
NO
>> Inspection is completed.
2.
CHECKING SELF-DIAGNOSIS RESULTS (2)
1.
Disconnect VDC/TCS/ABS control unit connector E218 and VDC relay box connector E55, E56, E57.
Then reconnect it securely.
2.
Perform VDC/TCS/ABS control unit self-diagnosis again.
Do any self-diagnosis items appear?
YES
>> GO TO 3.
NO
>> Poor connection. Repair or replace applicable connector.
3.
CHECKING VDC/TCS/ABS CONTROL UNIT GROUND CIRCUIT
Check continuity between VDC/TCS/ABS control unit harness con-
nector E218 and body ground.
OK or NG
OK
>> GO TO 4.
NG
>> Poor connection of VDC/TCS/ABS control unit, or harness malfunction.
Self-diagnosis results
CONSULT-II display items
Actuator relay circuit
SFIA0809E
VDC/TCS/ABS control unit
(Harness connector E218)
Body ground
Continuity
27 (B)
—
Yes
28 (B)
—
Yes
29 (B)
—
Yes
33 (B)
—
Yes
BRC-52
TROUBLE DIAGNOSIS
4.
CHECKING ACTUATOR RELAY POWER SYSTEM
1.
Disconnect VDC relay box connector E57.
2.
Check voltage between VDC relay box harness connector E57
and body ground.
OK or NG
OK
>> GO TO 5.
NG
>>
●
Check fuse 30A.
●
Check continuity between battery and relay unit terminal No. 9. If it is not OK, replace fuse or
harness.
5.
CHECKING ACTUATOR RELAY POWER CIRCUIT
1.
Disconnect VDC/TCS/ABS control unit connector E218 and VDC relay box connector E56.
2.
Check continuity between VDC/TCS/ABS control unit harness
connector E218 and VDC relay box harness connector E56.
OK or NG
OK
>> GO TO 6.
NG
>> Open or short in harness between VDC/TCS/ABS control unit and VDC relay box.
6.
CHECKING ACTUATOR RELAY UNIT
Check actuator relay as a unit. Refer to
.
OK or NG
OK
>> Check VDC/TCS/ABS control unit power circuit.
NG
>> Replace actuator relay.
SFIA0877E
VDC relay box
(Harness connector E57)
Body ground
Voltage
9 (L/Y)
—
Battery voltage (Approx. 12V)
SFIA0878E
VDC/TCS/ABS control unit
(Harness connector E218)
VDC relay box
(Harness connector E56)
Continuity
2 (SB)
5 (SB)
Yes
36 (GY/R)
7 (GY/R)
Yes
TROUBLE DIAGNOSIS
BRC-53
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Inspection 10 Stop Lamp Switch and Circuit
EFS001ZL
Inspection Procedure
1.
CHECKING SELF-DIAGNOSIS RESULTS
Check self-diagnosis results.
Does “STOP LAMP SW SYSTEM” appear in self-diagnosis results
display?
YES
>> GO TO 2.
NO
>> Inspection is completed.
2.
CHECKING STOP LAMP
1.
Disconnect stop lamp switch connector M402 and VDC/TCS/ABS control unit connector E218.
2.
Reconnect connectors securely.
3.
Start engine.
4.
Repeat pumping brake pedal carefully several times, then perform self-diagnosis again.
Do any self-diagnosis items appear?
YES
>> GO TO 3.
NO
>> Poor connection. Repair or replace applicable connector.
3.
CHECKING STOP LAMP SWITCH CIRCUIT
1.
Disconnect stop lamp switch connector M402 and VDC/TCS/ABS control unit connector E218.
2.
Check continuity between stop lamp switch harness connector
M402 and VDC/TCS/ABS control unit harness connector E218.
OK or NG
OK
>> Perform VDC/TCS/ABS control unit self-diagnosis again.
NG
>> Open or short in harness between VDC/TCS/ABS control unit and stop lamp switch
Self-diagnosis results
CONSULT-II display items
Stop lamp switch system
SFIA0810E
SFIA0879E
VDC/TCS/ABS control unit
(Harness connector E218)
Stop lamp switch
(Harness connector M402)
Continuity
48 (R/W)
2 (R/W)
Yes
BRC-54
TROUBLE DIAGNOSIS
Inspection 11 VDC/TCS/ABS Control Unit Power Circuit
EFS001ZM
Inspection Procedure
1.
CHECKING SELF-DIAGNOSIS RESULT
Check self-diagnosis results.
Does “LOW BATTERY VOLTAGE” appear in self-diagnosis results display?
YES
>> GO TO 2.
NO
>> Inspection is completed.
2.
STARTING INSPECTION
1.
Disconnect VDC/TCS/ABS control unit connector E218. Then reconnect it securely.
2.
Perform self-diagnosis.
Do any self-diagnosis items appear?
YES
>> GO TO 3.
NO
>> Poor connection. Repair or replace applicable connector.
3.
CHECKING VDC/TCS/ABS CONTROL UNIT POWER SYSTEM (1)
1.
Disconnect VDC/TCS/ABS control unit connector E218.
2.
Turn ignition switch ON (but do not start engine).
3.
Check voltage between VDC/TCS/ABS control unit harness
connector E218 and body ground.
OK or NG
OK
>> GO TO 4.
NG
>> GO TO 5.
Self-diagnosis results
CONSULT-II display items
Low battery voltage
SFIA0880E
VDC/TCS/ABS control unit
(Harness connector E218)
Body ground
Voltage
1 (GY)
—
Battery voltage (Approx. 12V)
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