Retrieving Diagnostic Trouble Codes
NOTE:
Speed sensor diagnostics and code retrieval use different DLC1 terminals with service connector or short pin connected. If a speed sensor or speed sensor circuit problem is suspected, see SPEED SENSOR DIAGNOSTICS .
- Ensure battery voltage is about 12 volts. Turn ignition on. ABS light should come on, then go out after 3 seconds. If warning light does not come on, check fuse, bulb, and wiring harness.
- With ignition on, unplug DLC1 short pin. Connect jumper wire between DLC terminals Tc and E1. See Fig 1. If a DTC is stored, 4 seconds will elapse, then ABS light will begin to flash a 2-digit DTC. First series of flashes indicates first digit of DTC. After a 1.5-second pause, second series of flashes indicates second digit of DTC.
- If 2 or more DTCs are stored, there will be a 2.5-second pause between each DTC. After all DTCs are displayed, a 4-second pause will occur, then all DTCs will repeat. If ABS system is functioning properly, ABS light will flash 2 times every second. For DTC interpretation, see DTC DEFINITIONS. If DTCs exist, go to appropriate DTC TEST under DIAGNOSTIC TESTS .
- After replacing or repairing malfunctioning components, clear DTCs. If a battery cable was disconnected during repairs, all DTCs will be erased. If battery cable was not disconnected during repairs, see CLEARING DTCS.