Inspection Procedure
- CHECK WIRE HARNESS (CERTIFICATION ECU - DOOR CONTROL RECEIVER)
- Disconnect the E84 ECU connector.
- Disconnect the L24 receiver connector.
- Measure the resistance of the wire harness side connectors.
Standard resistance
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Specified Condition E84-38 (RDA) - L24-5 (DATA) Below 1 Ω E84-39 (RSSI) - L24-2 (RSSI) E84-29 (RCO) - L24-4 (+5) E84-38 (RDA) or L24-5 (DATA) - Body ground 10 kΩ or higher E84-39 (RSSI) or L24-2 (RSSI) - Body ground E84-29 (RCO) or L24-4 (+5) - Body ground NG: REPAIR OR REPLACE HARNESS AND CONNECTOR
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: Go to next step
- CHECK DOOR CONTROL RECEIVER (+B TERMINAL)
- Measure the voltage of the connector.
Standard voltage
TESTER CONNECTION SPECIFIED CONDITIONTester Connection Condition Specified Condition L24-4 (+5) - Body ground Engine switch off, all doors closed and transmitter switch not pressed → pressed 5 to below 1 V → 5 V NG: REPLACE CERTIFICATION ECU
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: Go to next step
- REPLACE DOOR CONTROL RECEIVER
- Temporarily replace the door control receiver with a new or normally functioning one (see REMOVAL ).
- Perform the REGISTRATION procedures.
- CHECK FOR DTC
- Clear the DTC (see DIAGNOSIS SYSTEM ).
- Check if the same DTC is detected.
OK: DTC B1242 is not output.
NG: REPLACE CERTIFICATION ECU
OK: END (DOOR CONTROL RECEIVER IS DEFECTIVE)