Infiniti F50. Manual — part 273
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TROUBLE DIAGNOSIS
BRC-35
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Solenoid Valve Operation Chart
*: ON for 1 to 2 seconds after the touch, and then OFF
NOTE:
●
If active test is performed with brake pedal depressed, pedal stroke may change. This is normal.
●
“TEST STOP” is displayed approximately 6 seconds after operation starts.
●
After “TEST STOP” is displayed, to perform test again, repeat step 6.
VDC OFF Indicator Lamp
Touch “ON” and “OFF” on the screen. Check that VDC OFF indica-
tor lamp operates as shown in table below.
NOTE:
If “OFF” is touched on screen during active test, VDC OFF indicator
lamp, SLIP indicator lamp, and ABS warning lamp all turn ON for a
moment. This is normal.
ABS Motor
Touch “ON” and “OFF” on the screen. Check that ABS motor relay
operates as shown in table below.
NOTE:
●
If active test is performed with brake pedal depressed, pedal
stroke may change. This is normal.
●
“TEST STOP” is displayed approximately 10 seconds after oper-
ation starts.
Operation
ABS solenoid valve
ABS solenoid valve (ACT)
UP
KEEP
DOWN
UP
ACT UP
ACT KEEP
FR RH
ABS SOLENOID
EV SIGNAL FR (IN)
OFF
ON
ON
OFF
OFF
OFF
AV SIGNAL FR (OUT)
OFF
OFF
ON*
OFF
OFF
OFF
USV SIGNAL S
OFF
OFF
OFF
OFF
ON
ON
MAV SIGNAL S
OFF
OFF
OFF
OFF
ON*
OFF
FR LH
ABS SOLENOID
EV SIGNAL FL (IN)
OFF
ON
ON
OFF
OFF
OFF
AV SIGNAL FL (OUT)
OFF
OFF
ON*
OFF
OFF
OFF
USV SIGNAL S
OFF
OFF
OFF
OFF
ON
ON
MAV SIGNAL S
OFF
OFF
OFF
OFF
ON*
OFF
RR RH
ABS SOLENOID
EV SIGNAL RR (IN)
OFF
ON
ON
OFF
OFF
OFF
AV SIGNAL RR (OUT)
OFF
OFF
ON*
OFF
OFF
OFF
USV SIGNAL P
OFF
OFF
OFF
OFF
ON
ON
MAV SIGNAL P
OFF
OFF
OFF
OFF
ON*
OFF
RR LH
ABS SOLENOID
EV SIGNAL RL (IN)
OFF
ON
ON
OFF
OFF
OFF
AV SIGNAL RL (OUT)
OFF
OFF
ON*
OFF
OFF
OFF
USV SIGNAL P
OFF
OFF
OFF
OFF
ON
ON
MAV SIGNAL P
OFF
OFF
OFF
OFF
ON*
OFF
Operation
ON
OFF
VDC OFF indicator lamp
ON
OFF
SFIA0803E
Operation
ON
OFF
M/R OUTPUT
ON
OFF
SFIA0804E
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BRC-36
TROUBLE DIAGNOSIS
SLIP Indicator Lamp
Touch “ON” and “OFF” on the screen. Check that SLIP indicator
lamp operates as shown in table below.
NOTE:
If “OFF” is touched on screen during active test, VDC OFF indicator
lamp, SLIP indicator lamp, and ABS warning lamp all turn ON for a
moment. This is normal.
ABS Warning Lamp
Touch “ON” and “OFF” on the screen. Check that ABS warning lamp operates as shown in table below.
NOTE:
If “OFF” is touched on screen during active test, VDC OFF indicator
lamp, SLIP indicator lamp, and ABS warning lamp all turn ON for a
moment. This is normal.
ASCD Output
Touch “ON” and “OFF” on the screen. Check that ASCD output is as shown in table below.
Operation
ON
OFF
SLIP indicator lamp
ON
OFF
SFIA0594E
Operation
ON
OFF
ABS warning lamp
ON
OFF
SFIA0595E
Operation
ON
OFF
ASCD output
ON
OFF
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TROUBLE DIAGNOSIS
BRC-37
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For Fast and Accurate Diagnosis
EFS001ZA
PRECAUTIONS FOR DIAGNOSIS
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Before performing diagnosis, always read General Information (GI) to confirm general precautions.
●
If VDC/TCS/ABS control unit, steering angle sensor, steering system parts, suspension system parts, or
tires have been replaced, or if alignment has been adjusted, be sure to adjust neutral position of steering
angle sensor before driving.
●
When replacing VDC/TCS/ABS control unit, be sure labels on control units are same color.
●
After diagnosis is finished, be sure to erase memory. Refer to
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When checking continuity and voltage between units, be sure to check for disconnection, looseness,
bend, or collapse of connector terminals. If any non-standard condition is found, repair or replace connec-
tor terminals.
●
For intermittent symptoms, possible cause is malfunction in harness, harness connector, or terminals.
Move harness, harness connector, and terminals to check for poor connections.
●
If a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.
●
To use CONSULT-II to perform self-diagnosis of VDC/TCS/ABS control unit, active tests, or work support,
first stop work, then connect CONSULT-II and CONSULT-II CONVERTER to data link connector and
select “VDC”.
●
CONSULT-II self-diagnosis results are displayed without regard to occurrence timing. In some cases later
ones (timing value is small) appear on the next screen.
●
While self-diagnosis results of CONSULT-II shows an error, if CONSULT-II active test is performed, an
engine system error may be indicated. In this case, start engine to resume normal screen.
●
VDC/TCS/ABS system electronically controls brake operation and engine output. Following symptoms
may be caused by normal operations:
Symptom
Symptom description
Result
Motor operation noise
This is noise of motor inside VDC actuator. Slight noise may occur dur-
ing VDC, TCS, and ABS operation.
Normal
Just after engine starts, motor operating noise may be heard. This is a
normal status of the system operation check.
System operation check
noise
When the engine starts, slight “click” noise may be heard from engine
compartment. This is normal and is part of system operation check.
Normal
TCS operation
(SLIP lamp ON)
TCS may activate momentarily if wheel speed changes when driving
over location where friction coefficient varies, when downshifting, or
when fully depressing accelerator pedal.
Normal
Cancel VDC/TCS
function for the
inspection on a chas-
sis dynamometer.
For inspection of speedometer or other instruments, press
VDC OFF SW to turn VDC/TCS function off.
When accelerator pedal is depressed on a chassis dynamometer (fixed
front-wheel type), vehicle speed will not increase. This is not normal. It is
result of TCS being activated by stationary front wheels. Warning lamp
may also illuminate to indicate “sensor system error”. This is also nor-
mal, and is the result of the stationary front wheels being detected. To be
certain, restart engine, and drive vehicle at 30 km/h or above. Check
that warning lamp does not illuminate.
ABS operation (Longer stop-
ping distance)
On roads with low friction coefficients, such as snowy roads or gravel
roads, vehicles with ABS may require a longer stopping distance. There-
fore, when driving on such roads, avoid overconfidence and keep speed
sufficiently low.
Normal
Insufficient feeling of accel-
eration
Depending on road conditions, driver may feel that feeling of accelera-
tion is insufficient. This is because traction control, which controls
engine and brakes to achieve optimal traction, has the highest priority
(for safety). As a result, there may be times when acceleration is slightly
less than usual for the same accelerator pedal operation.
Normal
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BRC-38
TROUBLE DIAGNOSIS
ON and OFF Timing for ABS Warning Lamp, VDC OFF Indicator Lamp, and SLIP Indicator
Lamp
×
: ON
–: OFF
Condition
ABS warning
lamp
VDC OFF indica-
tor lamp
SLIP indicator
lamp
Remarks
Ignition SW OFF
–
–
–
—
For Approx. 1 seconds after
ignition SW is turned ON
×
×
×
—
Approx.1 seconds after igni-
tion switch ON
–
–
–
Turns OFF 1 seconds after engine
starts.
VDC OFF SW is turned ON.
(VDC function is OFF.)
–
×
–
—
There is a VDC/TCS/ABS
error.
×
×
×
—
×
×
–
There is a VDC/TCS/ABS control
unit error. (Power or ground mal-
function)
When VDC/TCS is not func-
tioning normally.
–
×
×
—
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