Accessing and Reading Trouble Codes
DIAGNOSTIC SYSTEM INSPECTIONThe ABS control unit contains self-diagnostic and memory functions to watch for and indicate present and past failures.
Read and note the diagnostic indications as shown below, then take action according to the Malfunction Code Table.
NOTE:
^ Verify the battery voltage is above 10 Volts at idle.
^ The malfunctions codes can only be obtained with the vehicle stopped. If the wiring harness for the warning lamp check connector is faulty, the diagnosis check cannot be made.
^ If the ABS warning lamp remains illuminated while the TBS terminal is grounded, it indicates a present failure and a malfunction code cannot be obtained by the warning lamp. A present failure code can only be obtained by connecting an analog voltmeter to the FBS terminal with the TBS terminal grounded.
^ If the ABS warning lamp starts flashing after the TBS terminal is grounded, it indicates a past failure and a malfunction code can be obtained by counting the flashing pattern or by connecting an analog voltmeter to the FBS terminal and counting the pulsations of the voltmeter pointer.
^ When all check items are complete, do not fail to disconnect the jumper wire from the check connector.
Reading Malfunction (trouble) Codes:
