Inspection Procedure
- CHECK HARNESS AND CONNECTOR (MAYDAY ECU - MAP LIGHT (MAYDAY SWITCH))
- Disconnect the R23 ECU connector.
- Disconnect the X6 map light connector.
- Measure the resistance according to the value(s) in the table below.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition R23-4 (IND1) - X6-4 (IND1) Always Below 1 Ω R23-4 (IND1) or X6-4 (IND1) - Body ground Always 10 kΩ or higher Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR THEN CLEAR HISTORIC DTC
OK: Go to Next Step
- CHECK MAP LIGHT ASSEMBLY (RED LED OPERATION)
- Temporarily replace the map light with a new or normally functioning one for standard body (see REMOVAL ) or long body (see REMOVAL ).
- Check that the system operates normally.
OK: Red LED operates normally.
NG: REPLACE MAYDAY ECU TOGETHER WITH MAYDAY BATTERY AND THEN PERFORM REGISTRATION
OK: END (MAP LIGHT (RED LED) IS FAULTY; CLEAR HISTORIC DTC)