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For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 1998 🢒 DeVille 🢒 DTC 🢒 DTC C1235 RR Wheel Speed Circuit Open or Shorted

Object Number: 413311 Size: MF
ABS Components
Cell 44: Wheel Speed Sensors and Variable Steering Actuator
Handling ESD Sensitive Parts Notice

Circuit Description

The wheel speed sensor used on this vehicle is a single point magnetic pickup. This sensor produces an AC signal that the EBTCM uses the frequency from to calculate the wheel speed.

Conditions for Setting the DTC

All of the following conditions occur:

    • The ignition is ON.
    • The EBTCM detects one of the following conditions:
       - An open
       - A short to ground
       - A short to voltage

Action Taken When the DTC Sets
    • A malfunction DTC is stored.
    • The ABS/TCS/Stabilitrak® is disabled.
    • The ABS indicator is turned ON.
    • The TRACTION CONTROL indicator is turned ON.
    • The DIC displays the SERVICE STABILITY SYS message.

Conditions for Clearing the DTC
    • The condition for DTC is no longer present and you used scan tool Clear DTCs function.
    • The condition for DTC is no longer present and you used the On-Board Clear DTCs function.
    • The EBTCM does not detect the DTC in 50 drive cycles.

Diagnostic Aids
    • Perform a thorough inspection of the wiring and the connectors. Failure to carefully and fully inspect wiring and connectors may result in misdiagnosis, causing part replacement with reappearance of the malfunction.
    • An intermittent malfunction may be caused by poor connections, broken insulation, or a wire that is broken inside the insulation.
    • If an intermittent malfunction exists, refer to Intermittents and Poor Connections .

Test Description

The numbers below refer to step numbers on the diagnostic table.

  1. This step checks for an open in the WSS or WSS CKT.

    2.

  2. This step checks for a short to ground in the WSS or WSS CKT.

    3.

  3. This step checks for a short to voltage in the WSS CKT.

    4.

  4. This step checks for a short to voltage in the WSS CKT.

DTC C1235 RR Wheel Speed Sensor Circuit Open or Shorted

Step

Action

Value(s)

Yes

No

1

Was the Diagnostic System Check performed?

--

Go to Step 2

Go to Diagnostic System Check

2
  1. Inspect the WSS wiring and connectors for damage.
  2. Inspect the WSS for looseness or damage.

Is physical damage of the sensor evident?

--

Go to Step 3

Go to Step 4

3

Repair the wiring as necessary. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Diagnostic System Check

--

4

  1. Turn the ignition switch to the OFF position.
  2. Disconnect the electronic brake traction control module (EBTCM).
  3. Use a J 39700-25 cable adapter in order to install a J 39700 universal pinout box to the EBTCM harness connector only.
  4. Use a J 39200 digital multimeter (DMM) in order to measure the resistance between terminal 13 and terminal 29 of the J 39700 .

Is the resistance within the specified range?

850-1350 ohms

Go to Step 12

Go to Step 5

5
  1. Disconnect the right rear wheel speed sensor (WSS).
  2. Use the DMM in order to measure the resistance between terminal A and terminal B of the WSS connector.

Is the resistance within the specified range?

850-1350 ohms

Go to Step 6

Go to Step 11

6
  1. Connect a fused jumper between the left rear WSS harness connector terminal B and ground.
  2. Use the DMM in order to measure the resistance between terminal 29 and terminal B of the J 39700 .

Is the resistance less than the specified value?

5 ohms

Go to Step 8

Go to Step 7

7

Repair an open or high resistance in CKT 882. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Diagnostic System Check

--

8
  1. Connect a fused jumper between the left rear WSS harness connector terminal A and ground.
  2. Use the DMM in order to measure the resistance between terminal 13 and terminal B of the J 39700 .

Is the resistance less than the specified value?

5 ohms

Go to Step 10

Go to Step 9

9

Repair an open or high resistance in CKT 883. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Diagnostic System Check

--

10

The malfunction is intermittent. Inspect all connectors and harnesses for damage that may result in an open or high resistance when connected. Refer to Intermittents and Poor Connections .

Did you complete the repair?

--

Go to Diagnostic System Check

--

11

Replace the WSS. Refer to Rear Wheel Bearing and Hub Replacement in Rear Suspension.

Did you complete the repair?

--

Go to Diagnostic System Check

--

12

Use the DMM in order to measure the resistance between terminal 13 and terminal B of the J 39700 .

Is the resistance equal to the specified value?

OL (infinite)

Go to Step 19

Go to Step 13

13
  1. Disconnect the right rear WSS.
  2. Use the DMM in order to measure the resistance between the WSS connector terminal A and ground.

Is the resistance equal to the specified value?

OL (infinite)

Go to Step 14

Go to Step 11

14

Use the DMM in order to measure the resistance between terminal 29 and terminal B of the J 39700 .

Is the resistance equal to the specified value?

OL (infinite)

Go to Step 16

Go to Step 15

15

Repair a short to ground in CKT 882. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Diagnostic System Check

--

16

Use the DMM in order to measure the resistance between terminal 13 and terminal B of the J 39700 .

Is the resistance equal to the specified value?

OL (infinite)

Go to Step 17

Go to Step 18

17

The malfunction is intermittent. Inspect all connectors and harnesses for damage that may result in a short to ground when connected. Refer to Intermittents and Poor Connections .

Did you complete the repair?

--

Go to Diagnostic System Check

--

18

Repair a short to ground in CKT 883. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Diagnostic System Check

--

19

  1. Disconnect the right rear WSS.
  2. Turn the ignition switch to the ON position, leaving the engine off.
  3. Use the DMM in order to measure the voltage at terminal 29 of the J 39700 .

Is the voltage greater than the specified value?

1 V

Go to Step 20

Go to Step 21

20

Repair a short to voltage in CKT 882. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Diagnostic System Check

--

21

Use the DMM in order to measure the voltage at terminal 13 of the J 39700 .

Is the voltage greater than the specified value?

1 V

Go to Step 22

Go to Step 23

22

Repair a short to voltage in CKT 883. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

--

Go to Diagnostic System Check

--

23

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

Did you complete the repair?

--

Go to Diagnostic System Check

--