GMC chervolet camaro 1999 Service Manual page 608

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Brakes
Front Wheel Speed Sensor Resistance
The following table contains resistance values for the
front wheel speed sensors at varying sensor
temperatures for use in diagnosis. The values are
approximate and should be used as a guideline
for diagnosis.
OTC C0035 LF Wheel Speed Circuit
Malfunction
Sensor Sensor Sensor
Temperature Temperature Resistance
(OC} (Of}
(Ohms)
-34 to 4
-30 to 40
800 to 1100
5 to 43 41 to 110
950 to 1300
44 to 93 111 to 200 1100 to 1600
Antilock Brake System 5-133
Test Description
The numbers below refer to step numbers on the
diagnostic table.
6. This step checks for an open in the WSS or
WSS CKT.
13. Checks for a short to voltage in the WSS CKT.
15. Checks for a short to voltage in the WSS CKT.
OTC C0035 LF Wheel Speed Circuit Malfunction
Step Action Value(s}
Yes No
Was the Diagnostic System Check performed?
Goto ABS
1
-
Diagnostic
Go to Step2 System Check
2
Inspect the WSS for physical damage.
-
Is physical damage of the WSS evident? Go to Step 3
Go to Step 4
Replace the WSS. Refer to Wheel Bearing/Hub
3
Replacement - Front in Front Suspension.
-
-
Is the replacement complete? Go to Step 18
4
Inspect the jumper harness for physical damage.
-
Is physical damage of the jumper harness evident? Go to Step 5 Go to Step 6
Replace the jumper harness. Refer to Wheel Speed
5
Sensor Jumper Harness Replacement (Front Left). -
-
Is the replacement complete? Go to Step 18
1. Turn the ignition switch to the OFF position.
2. Disconnect the EBCM/EBTCM connector C1.
3. Install the J 39700 Universal Pinout Box using the
6
J
39700 - 530 cable adapter to the EBCM/EBTCM
800-16000
harness connector C1 only.
4. Using J 39200 DMM, measure the resistance
between terminals 20 and 21 of J 39700.
Is the resistance within the range specified in the value(s)
column?
Go to Step 13 Go to Step 7
1. Disconnect the Wheel Speed Sensor.
2. Using J 39200 DMM, measure the resistance
7
between terminals A and B of the Wheel Speed
800-16000
Sensor Connector.
Is the resistance within the range specified in the value(s)
column? Go to Step 8 Go to Step 3
Using J 39200 DMM, measure the resistance between
terminal 20 of J 39700 and terminal B of the WSS harness
8
connector.
0-50
Is the resistance within the range specified in the value(s)
column? Go to Step 10
Go to Step 9
Repair CKT 830 for an open or high resistance. Refer to
Repair Procedures Cell 5 in Electrical Diagnosis. If an
9
open or high resistance is found in the jumper harness,
- -
replace the jumper harness. Refer to Wheel Speed Sensor
Jumper Harness Replacement (Front Left).
Is the repair complete? Go to Step 18