Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Isuzu >> 2007 >> Ascender RWD >> Repair and Diagnosis >> Brakes >> Antilock Brake System, Traction Control System & Stability Control System >> Diagnostic Information and Procedures >> DTC C0196 >> Test Description

Test Description

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

  1. 11:  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
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.
Schematic Reference: Antilock Brake System Schematics Connector End View Reference: Antilock Brake System Connector End Views 
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 OFF the ignition.
  2. Disconnect the yaw rate sensor/lateral accelerometer harness connector. Refer to Yaw Rate Sensor/Lateral Accelerometer Replacement .
  3. Turn ON the ignition.
  4. Select the vehicle stability enhancement system (VSES) Data Display function on the scan tool.
  5. 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 17 
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 18  Go to Step 15 
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 18  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 18  Go to Step 15 
9 Use a DMM to measure the voltage on the yaw rate frequency circuit.
Does the voltage measure greater than the specified value?		 3 V Go to Step 10  Go to Step 12 
10 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 14  Go to Step 11 
11 
  1. With the DMM 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 14  Go to Step 13 
12 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 18  Go to Step 15 
13 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 18  Go to Step 17 
14 Inspect for poor connections at the harness connector of the yaw rate/lateral accelerometer sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 18  Go to Step 16 
15 Inspect for poor connections at the harness connector of the electronic brake control module (EBCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?		 - Go to Step 18  Go to Step 17 
16
IMPORTANT: Replace the lateral accelerometer/yaw rate sensor. Use the scan tool to perform a Yaw Rate Sensor Recalibration procedure.
Replace the yaw rate/lateral accelerometer sensor. Refer to Control Module References .Did you complete the replacement?		 - Go to Step 18  -
17
IMPORTANT: Following EBCM replacement, perform the set-up procedure for the EBCM. Use the scan tool to perform the Tire Size Calibration procedure.
Replace the EBCM. Refer to Control Module References .Did you complete the replacement?		 - Go to Step 18  -
18
  1. Use the scan tool Clear serial data 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
scientia non olet · About Mike's Workshop Manuals