Inspection Procedure

READ VALUE OF HAND-HELD TESTER
1. Warm up the engine.
2. Turn the ignition switch OFF.
3. Connect the OBD II scan tool or hand-held tester to the DLC3.
4. Turn the ignition switch ON and push the OBD II scan tool or hand-held tester main SW ON.
5. Select the item "STOP LIGHT SW" in the DATALIST and read its value displayed on the OBD II scan tool or hand-held tester.
NOTE: The values given below for "Normal Condition" are representative values, so a vehicle may still be normal even if its value differs from those listed here. Do not depend solely on the "Normal Condition" here when deciding whether or not the part is faulty.

Fig 1: Hand Held Tester Normal Value
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: CHECK AND REPLACE ECM (See TESTING PROCEDURE )

NG
INSPECT STOP LAMP SWITCH ASSY (See DTC C1249/49: OPEN CIRCUIT IN STOP LIGHT SWITCH CIRCUIT )
NG: REPLACE STOP LAMP SWITCH ASSY

OK
CHECK HARNESS AND CONNECTOR (STOP LAMP SWITCH ASSY - ECM)
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (See TESTING PROCEDURE )

OK

CHECK AND REPLACE ECM (See TESTING PROCEDURE )