Infiniti QX4 (R50). Manual — part 107
Self-diagnosis
NBBR0095
FUNCTION
NBBR0095S01
I
When a problem occurs in the ABS, the warning lamp on the
instrument panel comes on. To start the self-diagnostic results
mode, ground the self-diagnostic (check) terminal located on
data link connector. The location of the malfunction is indicated
by the warning lamp flashing.
SELF-DIAGNOSIS PROCEDURE
NBBR0095S02
1.
Drive vehicle over 30 km/h (19 MPH) for at least one minute.
2.
Turn ignition switch OFF.
SBR665E
3.
Ground terminal 9 of data link connector with a suitable har-
ness.
4.
Turn ignition switch ON while grounding terminal 9.
Do not depress brake pedal.
SBR668E
5.
After 3.0 seconds, the warning lamp starts flashing to indicate
the malfunction code No. (See NOTE.)
6.
Verify the location of the malfunction with the malfunction code
chart. Refer to BR-54. Then make the necessary repairs fol-
lowing the diagnostic procedures.
7.
After the malfunctions are repaired, erase the malfunction
codes stored in the control unit. Refer to BR-42.
8.
Rerun the self-diagnostic results mode to verify that the mal-
function codes have been erased.
9.
Disconnect the check terminal from the ground. The self-diag-
nostic results mode is now complete.
10. Check warning lamp for deactivation after driving vehicle over
30 km/h (19 MPH) for at least one minute.
11. After making certain that warning lamp does not come on, test
the ABS in a safe area to verify that it functions properly.
NOTE:
The indication terminates after 5 minutes.
However, when the ignition switch is turned from OFF to ON, the
indication starts flashing again.
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
ABS
Self-diagnosis
BR-41
HOW TO READ SELF-DIAGNOSTIC RESULTS
(MALFUNCTION CODES)
=NBBR0095S03
1.
Determine the code No. by counting the number of times the
warning lamp flashes on and off.
2.
When several malfunctions occur at one time, up to three code
numbers can be stored; the latest malfunction will be indicated
first.
3.
The indication begins with the start code 12. After that a maxi-
mum of three code numbers appear in the order of the latest
one first. The indication then returns to the start code 12 to
repeat (the indication will stay on for five minutes at the most).
4.
The malfunction code chart is given on page BR-54.
SBR457D
ABR256
HOW TO ERASE SELF-DIAGNOSTIC RESULTS
(MALFUNCTION CODES)
NBBR0095S04
1.
Disconnect the check terminal from ground (ABS warning lamp
will stay lit).
2.
Within 12.5 seconds, ground the check terminal three times.
Each terminal ground must last more than 1 second. The ABS
warning lamp goes out after the erase operation has been
completed.
3.
Perform self-diagnosis again. Refer to BR-41. Only the start-
code should appear, no malfunction codes.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
ABS
Self-diagnosis (Cont’d)
BR-42
CONSULT-II
=NBBR0096
CONSULT-II APPLICATION TO ABS
NBBR0096S01
ITEM
SELF-DIAGNOSTIC
RESULTS
DATA MONITOR
ACTIVE TEST
Front right wheel sensor
×
×
—
Front left wheel sensor
×
×
—
Rear right wheel sensor
×
×
—
Rear left wheel sensor
×
×
—
G switch (G sensor)
★
×
×
×
ABS sensor
×
—
—
Stop lamp switch
—
×
—
Front right inlet solenoid valve
×
×
×
Front right outlet solenoid valve
×
×
×
Front left inlet solenoid valve
×
×
×
Front left outlet solenoid valve
×
×
×
Rear inlet solenoid valve
×
×
×
Rear outlet solenoid valve
×
×
×
Actuator solenoid valve relay
×
×
—
Actuator motor relay
(ABS MOTOR is shown on the Data Monitor
screen.)
×
×
×
ABS warning lamp
—
×
—
Battery voltage
×
×
—
Control unit
×
—
—
ABS operating signal
—
×
×
×
: Applicable
—: Not applicable
★
: 4WD models only
ECU (ABS CONTROL UNIT) PART NUMBER MODE
NBBR0096S02
Ignore the ECU part number displayed in the ECU PART NUMBER MODE. Refer to parts catalog to order
the ECU.
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ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
ABS
CONSULT-II
BR-43
SBR665E
CONSULT-II Inspection Procedure
=NBBR0097
SELF-DIAGNOSIS PROCEDURE
NBBR0097S01
1.
Turn ignition switch OFF.
2.
Connect CONSULT-II to data link connector.
3.
Start engine.
4.
Drive vehicle over 30 km/h (19 MPH) for at least one minute.
PBR455D
5.
Stop vehicle with engine running and touch “START” on CON-
SULT-II screen.
SBR670E
6.
Touch “ABS”.
SBR636E
7.
Touch “SELF-DIAG RESULTS”.
I
The screen shows the detected malfunction and how many
times the ignition switch has been turned ON since the mal-
function.
8.
Make the necessary repairs following the diagnostic proce-
dures.
PBR950C
9.
After the malfunctions are repaired, erase the self-diagnostic
results stored in the control unit by touching “ERASE”.
10. Check warning lamp for deactivation after driving vehicle over
30 km/h (19 MPH) for at least one minute.
11. Test the ABS in a safe area to verify that it functions properly.
NOTE:
“SELF-DIAG RESULTS” screen shows the detected malfunction
and how many times the ignition switch has been turned since the
malfunction.
ON BOARD DIAGNOSTIC SYSTEM DESCRIPTION
ABS
CONSULT-II Inspection Procedure
BR-44
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