Diagnostic Test

CHECK FOR AN ACTIVE DTC
1. Turn the ignition on.
2. With the scan tool, read ABS DTCs and record on the repair order.
3. With the scan tool, read and record the Environmental Data to help identify the conditions in which the DTC was set.
4. With the scan tool, erase the DTCs.
5. Start the engine.
6. With the scan tool, read ABS DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - Perform the ABS-INTERMITTENT CONDITION TEST. Refer to ABS INTERMITTENT CONDITION .
(G4) DYNAMICS SENSOR SUPPLY CIRCUIT FOR VOLTAGE
1. Turn the ignition off.
2. Disconnect the Dynamics Sensor harness connector.
3. Turn the ignition on.
4. Measure the voltage of the (G4) Dynamics Sensor Supply Circuit in the Dynamics Sensor harness connector.
  Is the voltage below 10 volts?
  
  Yes
  - Go To 3
  No
  - Go To 5
(G4) DYNAMICS SENSOR SUPPLY CIRCUIT SHORTED TO GROUND
1. Turn the ignition off.
2. Disconnect the ABS Module harness connector.
3. Measure the resistance between ground and the (G4) Dynamics Sensor Supply circuit at the Dynamics Sensor harness connector.
  Is the resistance above 5 Ohms?
  
  Yes
  - Go To 4
  No
  - Repair the (G4) Dynamics Sensor Supply circuit for an open or high resistance.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
(G4) DYNAMICS SENSOR SUPPLY CIRCUIT FOR OPEN OR HIGH RESISTANCE
1. Measure the resistance of the (G4) Dynamics Sensor Supply circuit between the ABS Module harness connector and the Dynamics Sensor harness connector.
  Is the resistance above 5 Ohms?
  
  Yes
  - Repair the (G4) Dynamics Sensor Supply circuit for an open or high resistance.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Replace the Anti-lock Brake System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM (ABS), REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
CHECK (G94) DYNAMICS SENSOR GROUND CIRCUIT FOR OPEN OR HIGH RESISTANCE
1. Turn the ignition off.
2. Using a 12-volt test light connected to B+, check the (G94) Ground Circuit in the Dynamics Sensor harness connector.
  NOTE:
  The test light should be illuminated and bright. Compare the brightness to that of a direct connection to the battery.
  
  Does the test light illuminate brightly?
  
  Yes
  - Replace the Dynamic Sensor in accordance with the Service Information. Refer to SENSOR, DYNAMICS, REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Repair the (G94) Dynamics Sensor Ground circuit for an open or high resistance.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .