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Home >> Cadillac >> 2006 >> Escalade EXT >> Repair and Diagnosis >> Brakes >> Antilock Brake System With Traction Control System & Stability Control System >> Diagnostic Information and Procedures >> DTC C0196 >> Test Description
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Test Description

The number below refers to the step number on the diagnostic table.

  1. 12:  This step tests for a shorted resistor in the EBCM or a short to voltage within the circuit, by verifying that a large voltage drop occurs in the circuit when the test lamp is placed in parallel with the DMM.
DTC C0196

Step Action Values Yes No
Schematic Reference: ABS Schematics 
Connector End View Reference: ABS Connector End Views 
IMPORTANT:
  • If DTC C0292 is set, diagnose C0292 before proceeding with diagnostics for C0196.
  • Always use connector test adapters when performing tests to avoid damage to delicate connector terminals.
  • Do not turn OFF the ignition during this diagnostic procedure unless the step in the table instructs you to do so. The scan tool may display some incorrect data if the ignition is cycled.
1 Did you perform the Diagnostic System Check - Vehicle? - Go to Step 2  Go to Diagnostic System Check - Vehicle
2
  1. Use the scan tool to clear the DTCs.
  2. Turn OFF the ignition for 5 seconds.
  3. Turn ON the ignition.
  4. Operate the vehicle within the Conditions for Running the DTC, as specified in the supporting text.
Does the DTC reset?		 - Go to Step 3  Go to Diagnostic Aids
3
  1. Turn ON the ignition.
  2. Disconnect the yaw rate sensor/lateral accelerometer harness connector. Refer to Yaw Rate Sensor/Lateral Accelerometer Replacement .
  3. Select the VSES Data Display function on the scan tool.
  4. Observe the Yaw Rate Sensor Input on the scan tool.
Is the Yaw Rate Sensor Input less than the specified value?		 0.6 V Go to Step 4  Go to Step 19 
4
  1. Connect a fused jumper wire between the yaw rate sensor/lateral accelerometer 5-volt reference circuit and the yaw rate signal circuit. Refer to Using Fused Jumper Wires .
  2. Observe the Yaw Rate Sensor Input on the scan tool.
Is the Yaw Rate Sensor Input greater than the specified value?		 4.4 V Go to Step 5  Go to Step 7 
5
  1. Disconnect the fused jumper wire.
  2. Use a DMM to measure the voltage between the yaw rate sensor/lateral accelerometer 5-volt reference circuit and the yaw rate sensor/lateral accelerometer low reference circuit.
Does the voltage measure greater than the specified value?		 4.75 V Go to Step 9  Go to Step 6 
6 Test the yaw rate sensor/lateral accelerometer low reference circuit for an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 20  Go to Step 17 
7 Test the yaw rate signal circuit for the following conditions:
  • An open
  • A high resistance
  • A short to ground

Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 20  Go to Step 8 
8 Test the yaw rate sensor/lateral accelerometer 5-volt reference circuit for a high resistance or an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 20  Go to Step 17 
9 Use a DMM to measure the voltage on the yaw rate frequency circuit.
Does the voltage measure greater than the specified value?		 4.75 V Go to Step 10  Go to Step 13 
10 Use a DMM to measure the voltage on the yaw rate sensor test circuit.
Does the voltage measure greater than the specified value?		 4.75 V Go to Step 11  Go to Step 15 
11
  1. Turn OFF the ignition.
  2. Reconnect the yaw rate sensor/lateral accelerometer harness connector.
  3. Disconnect the electronic brake control module (EBCM) harness connector.
  4. Install a J 39700  Universal Breakout Box and a J 39700-650 Adapter Cable. See Special Tools . Install the equipment between the EBCM and the EBCM harness connector.
  5. Turn ON the ignition.
  6. At the breakout box, use a DMM to measure the Hz frequency between the yaw rate frequency circuit and a ground circuit.
Does the HZ frequency signal measure within the specified range?		 13.37-14.36 kHz Go to Step 16  Go to Step 12 
12 
  1. With the DMM still connected to monitor the yaw rate frequency circuit, set the DMM to measure DC voltage.
  2. Connect one end of a test lamp to a good ground.
  3. Connect the other end of the test lamp to the positive lead of the DMM.
Does the voltage measure less than the specified value?		 0.15 V Go to Step 16  Go to Step 14 
13 Test the yaw rate frequency circuit for an open or a short to ground. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 20  Go to Step 17 
14 Test the yaw rate frequency circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 20  Go to Step 19 
15 Test the yaw rate sensor test circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?		 - Go to Step 20  Go to Step 17 
16
  1. Inspect for poor connections at the harness connector of the yaw rate sensor/lateral accelerometer. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
  2. Ensure the yaw rate sensor/lateral accelerometer is mounted securely and that the mounting bracket is not bent or otherwise damaged.
Did you find and correct the condition?		 - Go to Step 20  Go to Step 18 
17 Inspect for poor connections at the harness connector of the EBCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 20  Go to Step 19 
18
IMPORTANT: The Yaw Rate Reference Table Reset Procedure must be performed when you are instructed to do so, during the Yaw Rate Sensor/Lateral Accelerometer Replacement procedure.
Replace the yaw rate sensor/lateral accelerometer. Refer to Yaw Rate Sensor/Lateral Accelerometer Replacement .Did you complete the replacement?		 - Go to Step 20  -
19 Replace the EBCM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?		 - Go to Step 20  -
20
  1. Use the scan tool Clear All Class 2 DTCs function to clear all of the DTCs from all modules.
  2. Turn OFF the ignition for 5 seconds.
  3. Turn ON the ignition.
  4. Operate the vehicle within the Conditions for Running the DTC, as specified in the supporting text.
Does the DTC reset?		 - Go to Step 3  System OK
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