GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Cavalier 🢒 Brakes 🢒 Antilock Brake System 🢒 ETS Off Indicator Always On

Object Number: 183227 Size: MF
ABS Components
ABS/ETS Schematics

Circuit Description

Two-way serial communication is sent back and forth between the EBCM and the IPC. A message from the IPC is sent to the EBCM within seven seconds after ABS initialization. A serial communication failure does not allow the proper warning indicator commands to be sent back to the IPC.

Diagnostic Aids

The ETS OFF indicator will be ON and the Enhanced Traction System will be disabled whenever the scan tool is connected to the DLC with the ignition switch is in the RUN position.

Use the Lamp Test function of the Scan Tool in order to turn the indicator on while looking for an intermittent malfunction in the ETS OFF warning indicator circuitry.

Thoroughly inspect any circuitry that may cause the intermittent complaint for the following conditions:

    • Backed out terminals
    • Improper mating
    • Broken locks
    • Improperly formed or damaged terminals
    • Poor terminal-to-wiring connections
    • Physical damage to the wiring harness

Step

Action

Value(s)

Yes

No

Important: Zero the J 39200 test leads before making any resistance measurements. Refer to the J 39200 user's manual.

1

Was the Diagnostic System Check performed?

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Go to Step 2

Go to A Diagnostic System Check - ABS

2
  1. Turn the ignition switch to the OFF position.
  2. Connect a Scan Tool .
  3. Turn the ignition switch to the ON position.
  4. Use the Scan Tool in order to check for any PCM DTCs.

Are there any PCM DTCs?

--

Go to A Powertrain On Board Diagnostic (OBD) System Check (2.2L) or Powertrain On Board Diagnostic (OBD) System Check (2.4L) in Engine Controls

Go to Step 3

3
  1. Use the Scan Tool to select the BODY Menu.
  2. Use the Scan Tool to select IPC then Lamp Test.
  3. Use the Scan Tool to turn the warning indicators OFF.

Did the warning indicators turn OFF?

--

Go to Step 4

Go to A Diagnostic System Check - Instrument Cluster in Instrument Panel, Gages and Console

4

Disconnect the ETS Off switch connector.

Does the ETS Off indicator turn OFF?

--

Go to Step 7

Go to Step 5

5
  1. Disconnect the IPC connector C1.
  2. Using the J 39200 measure the resistance between the ETS Off switch harness connector terminal B and ground.

Is the resistance within the specified range?

OL

(Infinite)

Go to Step 6

Go to Step 8

6
  1. Turn the ignition switch to the OFF position.
  2. Inspect the following components:
    3. • The IPC connector C1
    • The ETS Off connector
  3. Inspect the above components for the following conditions:
    4. • Damage
    • Poor terminal contact
    • Terminal corrosion

Are there signs of poor terminal contact, corrosion or damaged terminals?

--

Go to Step 9

Go to Step 10

7

Replace the ETS Off switch.

Is the repair complete?

--

Go to A Diagnostic System Check - ABS

--

8

Repair short to ground in CKT 1571.

Is the repair complete?

--

Go to A Diagnostic System Check - ABS

--

9

Replace all of the terminals or connectors that exhibit signs of poor terminal contact, corrosion or damaged terminal(s).

Is the repair complete?

--

Go to A Diagnostic System Check - ABS

--

10

Replace the EBCM. Refer to Electronic Brake Control Module Replacement .

Is the repair complete?

--

Go to A Diagnostic System Check - ABS

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