GMC chevrolet camaro 2000 Service Manual page 679

s~2os
Anti lock Brake System Brakes
DTC C0266 ADS Controller Malfunction
Step
Action
'
Value(s) Yes
No
Was the Diagnostic System Check performed? Go to
A
(
1
-
Diagnostic
System
Go to Step2 Check-ABS
1. Turn the ignition.switch to the OFF position.
2. Disconnect the ASM harness connector.
2
3. Inspect the ASM harness connector and the
-
connector for damage or corrosion.
Is there any evidence of damage or corrosion? Go to Step 7
Go to Step 3
.
Using the
J
39200 DMM, measure the resistance between
3
the ASM harness connector terminal 28 and a good
0-5Q
ground.
Is the resistance within specifications? Go to Step 4 Go to Step 8
.
Using the
J
39200 DMM, measure the resistance between
4
the ASM harness connector terminal 55 and a good
0-5Q
ground.
Is the resistance within specifications? Go to Step5 Go to Step 8
1. Turn the ignition switch to the RUN position with the
engine off.
.
5 2. Measure the voltage between the.ASM hamess
B+
connector terminals 1 and 28.
Is the voltage within specifications? Go to Step 10 Go to Step 6
Repair CKT 739 for an open or high resistance. Refer to Go to A
6
Wiring Repairs.
-
Diagnostic
-
Is the circuit repair complete?
System
Check-ABS (
Repair as necessary. Go to A
7
Are the repairs complete? -
Diagnostic
-
System
Check-ABS
Repair the open or high resistance in. CKT 151. Refer to Go to A
8
Wiring· Repairs.
-
Diagnostic
-
ls.the circuit repair complete?
System
Check-ABS
Replace the ASM .. Refer to Accelerator and.Servo Control Goto A
9
Module (ASM) Replacement.
-
Diagnostic
-
Is the replacement complete?
System
Check-ABS
1. Turn the ignition switch to the OFF position.
2. Disconnect the EBCM connector C1.
3. Install t~e
J
39700 Univers.al Pinout Box using the
J39700-530 cable adapterto the EBCM harness
10
connector C1 only. OL (infinite)
4. Using
J 39200DMM, measure the resistance
between terminals 9 and 15 of
J
39700.
Is the resistance withih the range specified in the value(s)
column?
Go to Step 12 Go to Step 11
Repair CKT 464 for a short to ground. Refer to Wiring
Go to A
11
Repairs.
-
Diagnostic
-
Is the circuit repair complete?
System
Check-ABS