Page 2913 of 3342
8I5
CHECK ABS SENSOR SIGNAL.
1) Raise all four wheels of ground.
2) Turn ignition switch OFF.
3) Connect the oscilloscope to the connector (F1) or con-
nector (B100).
4) Turn ignition switch ON.
B4M1242A
5) Rotate wheels and measure voltage at specified fre-
quency.
NOTE:
When this inspection is completed, the ABS control mod-
ule sometimes stores the trouble code 29.
Connector & terminal
Trouble code 22 / (B100) No. 12 (+)—No. 13 ( ):
Trouble code 24 / (B100) No. 3 (+)—No.4( ):
Trouble code 26 / (F1) No. 4 (+)—No.5( ):
Trouble code 28 / (F1) No. 1 (+)—No.2( ):
Specified voltage: 0.12—1 V (When it is 20 Hz.)
: Is oscilloscope pattern smooth, as shown in
figure?
: Go to step8I9.
: Go to step8I6.
8I6CHECK CONTAMINATION OF ABS SEN-
SOR OR TONE WHEEL.
Remove disc rotor or drum from hub in accordance with
trouble code.
: Is the ABS sensor pole piece or the tone
wheel contaminated by dirt or other foreign
matter?
: Thoroughly remove dirt or other foreign matter.
: Go to step8I7.
8I7CHECK DAMAGE OF ABS SENSOR OR
TONE WHEEL.
: Are there broken or damaged in the ABS
sensor pole piece or the tone wheel?
: Replace ABS sensor or tone wheel.
: Go to step8I8.
37
4-4dBRAKES [ABS 5.3i TYPE]
8. Diagnostics Chart with Trouble Code by ABS Warning Light
Page 2921 of 3342
B4M1242A
5) Rotate wheels and measure voltage at specified fre-
quency.
NOTE:
When this inspection is completed, the ABS control mod-
ule sometimes stores the trouble code 29.
Connector & terminal
(B100) No. 12 (+)—No. 13 ( ) (Front RH):
(B100) No. 3 (+)—No.4( ) (Front LH):
(F1) No. 4 (+)—No.5( ) (Rear RH):
(F1) No. 1 (+)—No.2( ) (Rear LH):
Specified voltage: 0.12—1 V (When it is 20 Hz.)
: Is oscilloscope pattern smooth, as shown in
figure?
: Go to step8J13.
: Go to step8J10.
8J10CHECK CONTAMINATION OF ABS SEN-
SOR OR TONE WHEEL.
Remove disc rotor from hub.
: Is the ABS sensor pole piece or the tone
wheel contaminated by dirt or other foreign
matter?
: Thoroughly remove dirt or other foreign matter.
: Go to step8J11.
8J11CHECK DAMAGE OF ABS SENSOR OR
TONE WHEEL.
: Are there broken or damaged teeth in the
ABS sensor pole piece or the tone wheel?
: Replace ABS sensor or tone wheel.
: Go to step8J12.
8J12
CHECK HUB RUNOUT.
Measure hub runout.
: Is the runout less than 0.05 mm (0.0020 in)?
: Go to step8J13.
: Repair hub.
45
4-4dBRAKES [ABS 5.3i TYPE]
8. Diagnostics Chart with Trouble Code by ABS Warning Light
Page 2990 of 3342
B4M1242A
5) Rotate wheels and measure voltage at specified fre-
quency.
NOTE:
When this inspection is completed, the ABSCM&H/U
sometimes stores the trouble code 29.
Connector & terminal
Trouble code 22 / (B100) No. 12 (+)—No. 13 ( ):
Trouble code 24 / (B100) No. 3 (+)—No.4( ):
Trouble code 26 / (F1) No. 4 (+)—No.5( ):
Trouble code 28 / (F1) No. 1 (+)—No.2( ):
Specified voltage: 0.12—1 V (When it is 20 Hz.)
: Is oscilloscope pattern smooth, as shown in
figure?
: Go to step10L16.
: Go to step10L13.
10L13CHECK CONTAMINATION OF ABS SEN-
SOR OR TONE WHEEL.
Remove disc rotor or drum from hub in accordance with
trouble code.
: Is the ABS sensor pole piece or the tone
wheel contaminated by dirt or other foreign
matter?
: Thoroughly remove dirt or other foreign matter.
: Go to step10L14.
10L14CHECK DAMAGE OF ABS SENSOR OR
TONE WHEEL.
: Are there broken or damaged in the ABS
sensor pole piece or the tone wheel?
: Replace ABS sensor or tone wheel.
: Go to step10L15.
10L15
CHECK HUB RUNOUT.
Measure hub runout.
: Is the runout less than 0.05 mm (0.0020 in)?
: Go to step10L16.
: Repair hub.
11 4
4-4dBRAKES [ABS 5.3i TYPE]
10. Diagnostics Chart with Select Monitor
Page 2998 of 3342
B4M1242A
5) Rotate wheels and measure voltage at specified fre-
quency.
NOTE:
When this inspection is completed, the ABSCM&H/U
sometimes stores the trouble code 29.
Connector & terminal
(B100) No. 12 (+)—No. 13 ( ) (Front RH):
(B100) No. 3 (+)—No.4( ) (Front LH):
(F1) No. 4 (+)—No.5( ) (Rear RH):
(F1) No. 1 (+)—No.2( ) (Rear LH):
Specified voltage: 0.12—1 V (When it is 20 Hz.)
: Is oscilloscope pattern smooth, as shown in
figure?
: Go to step8M13.
: Go to step8M10.
10M10CHECK CONTAMINATION OF ABS SEN-
SOR OR TONE WHEEL.
Remove disc rotor from hub.
: Is the ABS sensor pole piece or the tone
wheel contaminated by dirt or other foreign
matter?
: Thoroughly remove dirt or other foreign matter.
: Go to step10M11.
10M11CHECK DAMAGE OF ABS SENSOR OR
TONE WHEEL.
: Are there broken or damaged teeth in the
ABS sensor pole piece or the tone wheel?
: Replace ABS sensor or tone wheel.
: Go to step10M12.
10M12
CHECK HUB RUNOUT.
Measure hub runout.
: Is the runout less than 0.05 mm (0.0020 in)?
: Go to step10M13.
: Repair hub.
122
4-4dBRAKES [ABS 5.3i TYPE]
10. Diagnostics Chart with Select Monitor
Page 3060 of 3342
11. General Diagnostics Table
A: SYMPTOMS AND PROBABLE CAUSES
Symptom Probable faulty units/parts
Vehicle instability during brakingVehicle pulls to either side.ABSCM&H/U (solenoid valve)
ABS sensor
Brake (caliper & piston, pads)
Wheel alignment
Tire specifications, tire wear and air pressures
Incorrect wiring or piping connections
Road surface (uneven, camber)
Vehicle spins.ABSCM&H/U (solenoid valve)
ABS sensor
Brake (pads)
Tire specifications, tire wear and air pressures
Incorrect wiring or piping connections
Poor brakingLong braking/stopping distanceABSCM&H/U (solenoid valve)
Brake (pads)
Air in brake line
Tire specifications, tire wear and air pressures
Incorrect wiring or piping connections
Wheel locks.ABSCM&H/U (solenoid valve, motor)
ABS sensor
Incorrect wiring or piping connections
Brake draggingABSCM&H/U (solenoid valve)
ABS sensor
Master cylinder
Brake (caliper & piston)
Parking brake
Axle & wheels
Brake pedal play
Long brake pedal strokeAir in brake line
Brake pedal play
Vehicle pitchingSuspension play or fatigue (reduced damping)
Incorrect wiring or piping connections
Road surface (uneven)
Unstable or uneven brakingABSCM&H/U (solenoid valve)
ABS sensor
Brake (caliper & piston, pads)
Tire specifications, tire wear and air pressures
Incorrect wiring or piping connections
Road surface (uneven)
Vibration and/or noise (while
driving on slippery roads)Excessive pedal vibrationIncorrect wiring or piping connections
Road surface (uneven)
Noise from ABSCM&H/UABSCM&H/U (mount bushing)
ABS sensor
Brake piping
Noise from front of vehicleABSCM & H/U (mount bushing)
ABS sensor
Master cylinder
Brake (caliper & piston, pads, rotor)
Brake piping
Brake booster & check valve
Suspension play or fatigue
Noise from rear of vehicleABS sensor
Brake (caliper & piston, pads, rotor)
Parking brake
Brake piping
Suspension play or fatigue
184
4-4dBRAKES [ABS 5.3i TYPE]
11. General Diagnostics Table