Page 2386 of 2890
10) 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 next.
: Are there broken or damaged teeth in the
ABS sensor pole piece or the tone wheel?
: Replace ABS sensor or tone wheel.
: Go to next step.
11) Measure hub runout.
: Is the runout less than 0.05 mm (0.0020 in)?
: Go to step8D4.
: Repair hub.
8D4
CHECK ABSCM.
1) Turn ignition switch to OFF.
2) Connect all connectors.
3) Erase the memory.
4) Perform inspection mode.
5) Read out the trouble code.
: Is the same trouble code as in the current
diagnosis still being output?
: Replace ABSCM.
: Go to next.
: Are other trouble codes being output?
: Proceed with the diagnosis corresponding to the
trouble code.
: A temporary poor contact.
46
4-4cBRAKES [ABS 5.3 TYPE]
8. Diagnostics Chart with Trouble Code
Page 2488 of 2890
B4M0816A
9) 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.
TROUBLE CODE / Connector & terminal:
22 / (F49) No. 14 (+)—No. 15 ( )
24 / (F49) No. 49 (+)—No. 19 ( )
26 / (F49) No. 18 (+)—No. 46 ( )
28 / (F49) No. 16 (+)—No. 17 ( )
Specified voltage: 0.12—1 V (When it is 20 Hz.)
: Is oscilloscope pattern smooth, as shown in
figure?
: Go to step10L7.
: Go to next step.
10) Remove disc rotor 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 next.
: Are there broken or damaged teeth in the
ABS sensor pole piece or the tone wheel?
: Replace ABS sensor or tone wheel.
: Go to next step.
11) Measure hub runout.
: Is the runout less than 0.05 mm (0.0020 in)?
: Go to step10L7.
: Repair hub.
B4M0806B
B4M1036A
10L7
CHECK RESISTANCE OF ABS SENSOR.
1) Turn ignition switch OFF.
2) Disconnect connector from ABS sensor.
3) Measure resistance between ABS sensor connector ter-
minals.
: Trouble code/Connector & terminal
22/to (B6) No. 1—No. 2
24/to (B15) No. 1—No. 2
26/to (P8) No. 1—No. 2
28/to (P9) No. 1—No. 2
Is resistance 0.8—1.2 kΩ?
: Go to step10L8.
: Replace ABS sensor.
148
4-4cBRAKES [ABS 5.3 TYPE]
10. Diagnostics Chart with Select Monitor
Page 2496 of 2890
G4M0701
: Go to next.
: Adjust the gap.
NOTE:
Adjust the gap using spacer (Part No. 26755AA000). If
spacers cannot correct the gap, replace worn sensor or
worn tone wheel.
: Is an oscilloscope available?
: Go to next step.
: Go to step 10).
2) Raise all four wheels of ground.
3) Turn ignition switch OFF.
4) Disconnect connector from ABS control module.
5) Disconnect connector cover from connector.
6) Connect connector to ABS control module.
7) Connect the oscilloscope to the ABS control module
connector.
8) Turn ignition switch ON.
B4M0816A
9) 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.
TROUBLE CODE / Connector & terminal:
(F49) No. 14 (+)—No. 15 ( ) (Front RH)
(F49) No. 49 (+)—No. 19 ( ) (Front LH)
(F49) No. 18 (+)—No. 46 ( ) (Rear RH)
(F49) No. 16 (+)—No. 17 ( ) (Rear LH)
Specified voltage: 0.12—1 V (When it is 20 Hz.)
: Is oscilloscope pattern smooth, as shown in
figure?
: Go to step10M4.
: Go to next step.
10) 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 next.
156
4-4cBRAKES [ABS 5.3 TYPE]
10. Diagnostics Chart with Select Monitor
Page 2612 of 2890
11. General Diagnostics Table
A: SYMPTOMS AND PROBABLE CAUSES
Symptom Probable faulty units/parts
Vehicle instability during brakingVehicle pulls to either side.Hydraulic unit (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.Hydraulic unit (solenoid valve)
ABS sensor
Brake (pads)
Tire specifications, tire wear and air pressures
Incorrect wiring or piping connections
Poor brakingLong braking/stopping distanceHydraulic unit (solenoid valve)
Brake (pads)
Air in brake line
Tire specifications, tire wear and air pressures
Incorrect wiring or piping connections
Wheel locks.Hydraulic unit (solenoid valve, motor)
ABS sensor
Incorrect wiring or piping connections
Brake draggingHydraulic unit (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 brakingHydraulic unit (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 hydraulic unitHydraulic unit (mount bushing)
ABS sensor
Brake piping
Noise from front of vehicleHydraulic unit (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
272
4-4cBRAKES [ABS 5.3 TYPE]
11. General Diagnostics Table
