Infiniti F50. Manual — part 275

TROUBLE DIAGNOSIS

BRC-43

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Inspection 4 Pressure Sensor and Circuit Between Pressure Sensor and VDC/
TCS/ABS Control Unit

EFS001ZF

Inspection Procedure

1.

CHECKING SELF-DIAGNOSIS RESULTS (1)

Check self-diagnosis results.

Does “PRESSURE SENSOR” appear on self-diagnosis display?

YES

>> GO TO 2.

NO

>> Inspection is completed.

2.

CHECKING SELF-DIAGNOSIS RESULTS (2)

1.

Disconnect pressure sensor VDC actuator connector E21 and VDC/TCS/ABS control unit connectors
E218. Then reconnect them securely.

2.

Perform VDC/TCS/ABS control unit self-diagnosis again.

OK or NG

OK

>> Poor connection of connectors. Repair or replace suspect connector. Perform self-diagnosis

again.

NG

>> GO TO 3.

3.

CHECKING PRESSURE SENSOR CIRCUIT

1.

Disconnect VDC actuator connector E21 pressure sensor and
VDC/TCS/ABS control unit connector E218.

2.

Check continuity between VDC/TCS/ABS control unit harness
connector E218 and VDC actuator pressure sensor harness
connector E21.

OK or NG

OK

>> GO TO 4.

NG

>> Open or short in harness. Repair or replace the suspect harness.

Self-diagnosis results

CONSULT-II display items

Pressure sensor system

SFIA0586E

SFIA0873E

VDC/TCS/ABS control unit

(Harness connector E218)

Pressure sensor

(VDC actuator harness connector E21)

Continuity

69 (P/L)

30 (P/L)

Yes

68 (LG)

31 (LG)

Yes

67 (G/OR)

32 (G/OR)

Yes

BRC-44

TROUBLE DIAGNOSIS

4.

CHECKING PRESSURE SENSOR

Check pressure sensor value on “DATA MONITOR”.

OK or NG

OK

>> Perform VDC/TCS/ABS control unit self-diagnosis again.

NG

>> Pressure sensor malfunction. Replace VDC actuator (inside pressure sensor).

Inspection 5 Steering Angle Sensor and Circuit Between Steering Angle Sensor
and VDC/TCS/ABS Control Unit

EFS001ZG

Inspection Procedure

1.

CHECKING SELF-DIAGNOSIS RESULTS

Check self-diagnosis results.

Also perform Inspection 1 for the CAN communication system.

Does “STEERING ANGLE SENSOR” appear on self-diagnosis dis-
play?

YES

>> GO TO 2.

NO

>> Inspection is completed.

2.

CHECKING STEERING ANGLE SENSOR CIRCUIT

1.

Disconnect VDC/TCS/ABS control unit connector E218 and steering angle sensor connector M52.

2.

Check continuity between VDC/TCS/ABS control unit harness connector E218 and steering angle sensor
harness connector M52.

OK or NG

OK

>> GO TO 3.

NG

>> Open or short in harness. Repair or replace suspect harness.

Condition

Data monitor display

Brake pedal depressed

Positive value

When brake pedal is released.

Approx. 0 bar

Self-diagnosis results

CONSULT-II display items

Steering angle sensor system

SFIA0806E

SFIA0807E

VDC/TCS/ABS control unit

(Harness connector E218)

Steering angle sensor

(Harness connector M52)

Continuity

2 (SB)

3 (SB)

Yes

TROUBLE DIAGNOSIS

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3.

DATA MONITOR CHECK

Execute “DATA MONITOR” for “STEERING ANGLE SIGNAL”. Check that results are normal.

OK or NG

OK

>> Perform VDC/TCS/ABS control unit self-diagnosis again.

NG

>> Replace spiral cable (steering angle sensor) and adjust neutral position of steering angle sensor.

Refer to

BRC-6, "Adjustment of Steering Angle Sensor Neutral Position"

.

Steering condition

Data monitor

Driving straight

-5 deg to +5 deg

Turned 90

°

to right

Approx. +90 deg

Turned 90

°

to left

Approx. -90 deg

BRC-46

TROUBLE DIAGNOSIS

Inspection 6 Yaw Rate/Side G-Sensor and Circuit Between Yaw Rate/Side G-
Sensor and VDC/TCS/ABS Control Unit

EFS001ZH

Inspection Procedure

1.

CHECKING SELF-DIAGNOSIS RESULTS (1)

Check self-diagnosis results.

CAUTION:

If vehicle is on turn-table at entrance to parking garage, or on
other moving surface, VDC OFF indicator lamp may illuminate
and CONSULT-II self-diagnosis may indicate yaw rate sensor
system malfunction. However, in this case there is no malfunc-
tion in yaw rate sensor system. Take vehicle off of turn-table or
other moving surface, and start engine. Results will return to
normal.
Do “YAW RATE SENSOR SYSTEM” and “SIDE G-SENSOR SYSTEM” appear on self-diagnosis display?

YES

>> GO TO 2.

NO

>> Inspection is completed.

2.

CHECKING SELF-DIAGNOSIS RESULTS (2)

1.

Disconnect yaw rate/side G-sensor harness connector M99 and VDC/TCS/ABS control unit harness con-
nector E218.

2.

Check continuity between VDC/TCS/ABS control unit harness connector E218 and yaw rate/side G-sen-
sor harness connector M99.

OK or NG

OK

>> GO TO 3.

NG

>> Open or short in harness. Repair or replace suspect harness.

Self-diagnosis results

CONSULT-II display items

Yaw rate sensor system

Side G-sensor system

SFIA0570E

SFIA0874E

VDC/TCS/ABS control unit
(Harness connector E218)

Yaw rate/ Side G-sensor

(Harness connector M99)

Continuity

78 (L/W)

1 (L/W)

Yes

77 (Y/B)

2 (Y/B)

Yes

34 (OR)

3 (OR)

Yes

79 (R/L)

4 (R/L)

Yes

18 (PU/W)

5 (PU/W)

Yes

80 (W/R)

6 (W/R)

Yes