GMC chervolet camaro 1999 Service Manual page 615

5-140 Antilock Brake System Brakes
DTC C0040 RF Wheel Speed Circuit Malfunction (cont'd)
Step
Action Value(s)
Yes
No
Repair CKT 872 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 Right).
Is the repair complete? Go to Step 18
Using J 39200 DMM, measure the resistance between
terminal 5 of J 39700 and terminal A of the WSS harness
10
connector.
0-50
Is the resistance within the range specified in the value(s)
column?
Go to Step 12
Go to Slep 11
Repair CKT 833 for an open or high resistance. Refer to
Repair Procedures Cell 5 in Electrical Diagnosis. If an
11
open or high resistance is found in the jumper harness,
-
replace the jumper harness. Refer to Wheel Speed Sensor
-
Jumper Harness Replacement (Front Right).
Is the repair complete?
Go to Step 18
Malfunction is intermittent. Inspect all connectors and
harnesses for damage that may result in an open or high
12
resistance when connected. Refer to Repair Procedures
- -
Cell 5 in Electrical Diagnosis.
Is the repair complete?
Go to Step 18
1. Disconnect the Wheel Speed Sensor.
2. Turn the ignition switch to the RUN position,
engine off.
13
3. Using J 39200 DMM, measure the voltage at terminal 4
Above 1V
of J 39700 if the vehicle is equipped with Traction
Control. If the vehicle is not equipped with Traction
Control measure the voltage at terminal 3 of J 39700.
(
Is the voltage within the range specified in the value(s)
column? Go to Step 14 Goto Step 15
Repair CKT 872 for a short to voltage. Refer to Repair
Procedures Cell 5 in Electrical Diagnosis. If a short to
14
voltage is found in the jumper harness, replace the jumper
-
harness. Refer to Wheel Speed Sensor Jumper Harness
-
Replacement (Front Right).
Is the repair complete? Go to Step 18
Using J 39200 DMM, measure the voltage at terminal 5 of
15
J39700.
Above 1V
Is the voltage within the range specified in the value(s)
column? Go to Step 16 Goto Step 17
Repair CKT 833 for a short to voltage. Refer to Repair
Procedures Cell 5 in Electrical Diagnosis. If a short to
16
voltage is found in the jumper harness, replace the jumper
harness. Refer to Wheel Speed Sensor Jumper Harness
- -
Replacement (Front Right).
Is the repair complete?
Go to Step 18
Replace the EBCM/EBTCM. Refer to Electronic Brake
Goto ABS
17
Control Module (EBCM) Replacement.
-
Diagnostic
-
Is the replacement complete? System Check
1. Reconnect all previously disconnected components.
2. Using a scan tool clear the OTC.
18
3. Remove the scan tool from the DLC.
-
4. Carefully drive the vehicle above 12 Km/h (8 mph) for
Goto ABS
several minutes.
Diagnostic
(
Does the OTC reset as a current OTC?
GotoStep2
System Check