Inspection Procedure

CHECK DTC FOR ABS
1. Check DTC on PRE-CHECK .
1. YES: REPAIR CIRCUIT INDICATED BY OUTPUT CODE
2. NO: GO TO NEXT STEP.
INSPECT SKID CONTROL ECU CONNECTOR SECURELY CONNECTED
1. NO: CONNECT CONNECTOR TO ECU
2. YES: GO TO NEXT STEP.
INSPECT SKID CONTROL ECU TERMINAL VOLTAGE(IG1 TERMINAL)
IN CASE OF USING HAND-HELD TESTER:
1. Check the voltage condition output from the ECU displayed on the hand-held tester.
OK:

"Normal" is displayed.

IN CASE OF NOT USING HAND-HELD TESTER:
1. Remove the skid control ECU with connectors still connected.
2. Turn the ignition switch ON.
3. Measure voltage between terminals IG1 and GND of skid control ECU.
OK:

Voltage: 10 - 14 V

Fig 1: Inspecting Skid Control ECU Terminal Voltage (IG1 Terminal)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. OK: Go to step 5
2. NG: GO TO NEXT STEP.
INSPECT BATTERY
OK:

Voltage: 10 - 14 V
1. NG: CHECK AND REPLACE CHARGING SYSTEM
2. OK: GO TO NEXT STEP.
CHECK HARNESS AND CONNECTOR (DLC3 - SKID CONTROL ECU)
Check for short circuit in harness and connector between terminal TC of DLC3 and skid control ECU (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: GO TO NEXT STEP.
INSPECT ABS WARNING LIGHT
1. See HOW TO PROCEED WITH TROUBLESHOOTING .
1. NG: REPAIR OR REPLACE COMBINATION METER ASSEMBLY
2. OK: GO TO NEXT STEP.
CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - COMBINATION METER)
1. Check for open and short circuit in harness and connector between skid control ECU and combination meter (See ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
2. OK: GO TO NEXT STEP.
CHECK AND REPLACE SKID CONTROL ECU ASSY