[A]: | ABS hydraulic unit / control module connector E142 (viewed from control module side) | 3. | Left front wheel speed sensor | 6. | Right rear wheel speed sensor. |
1. | Battery | 4. | Right front wheel speed sensor. | 7. | ABS hydraulic unit / control module connector of harness |
2. | Main fuse box | 5. | Left rear wheel speed sensor. |
Step | Action | YES | NO |
---|---|---|---|
1 |
Was
ABS Check
performed?
|
Go to Step 2.
|
Go to
ABS Check
.
|
2 |
1)
Turn ignition switch to OFF position.
2)
Disconnect applicable ABS wheel speed sensor coupler.
3)
Measure resistance between terminals of ABS wheel speed sensor. Refer
Front Wheel Speed Sensor Inspection
and
Rear Wheel Speed Sensor Inspection
.
Is measured resistance values as specified?
|
Go to Step 3.
|
Replace ABS wheel speed sensor assembly.
|
3 |
1)
Connect ABS wheel speed sensor coupler.
2)
Disconnect ABS hydraulic unit / control module connector.
3)
Check for proper connection to ABS hydraulic unit / control module at each sensor terminal.
4)
If OK, then turn ignition switch ON and measure voltage between sensor terminal of module connector and vehicle body ground.
Is it 0 V?
|
Go to Step 4.
|
ABS wheel speed sensor circuit shorted to power.
|
4 |
1)
Turn ignition switch to OFF position.
2)
Measure resistance between the following points.
•
Both ABS hydraulic unit / control module connector terminals of the corresponding sensor.
This check result should be the same as Step 2. • Either terminal of wheel speed sensor coupler and vehicle body ground. This check result should be no continuity.
Are both check results OK?
|
Go to Step 5.
|
Circuit open or shorted to ground.
|
5 |
1)
Remove applicable ABS wheel speed sensor.
2)
Check sensor for damage or foreign material attached.
Is it in good condition?
|
Go to Step 4.
|
Clean repair, or replace.
|
6 |
Check front and/or rear sensor ring for the following (remove rear axle shaft as necessary):
•
Rotor serration (teeth) neither missing or damaged.
• No foreign material being attached. • Rotor not being eccentric. • Wheel bearing free from excessive play.
Are they in good condition?
|
Go to Step 7.
|
Clean, repair or replace.
|
7 |
1)
Install ABS wheel speed sensor and check that there is no clearance between sensor and knuckle.
Refer to Front Wheel Speed Sensor Inspection and/or Rear Wheel Speed Sensor Inspection .
Is it OK?
|
Go to Step 8.
|
Replace ABS wheel speed sensor.
|
8 |
1)
Referring to “Reference” in
Front Wheel Speed Sensor On-Vehicle Inspection
and/or “Reference” in
Rear Wheel Speed Sensor On-Vehicle Inspection
. Check output voltage or waveform.
Is specified voltage and/or waveform obtained?
|
Substitute a known-good ABS hydraulic unit / control module assembly and recheck.
|
Replace sensor and recheck.
|