Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

CHECK WIRE HARNESS (MAIN BODY ECU - DOOR CONTROL RECEIVER)

Disconnect the E17 ECU connector.
Disconnect the L18 receiver connector.

Fig 1: Identifying E17 ECU And L18 Receiver Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance of the wire harness side connectors.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
E17-5 (RDA) - L18-2 (RDA)	Below 1 Ω
E17-6 (PRG) - L18-3 (PRG)	Below 1 Ω
E17-5 (RDA) or L18-2 (RDA) - Body ground	10 kΩ or higher
E17-6 (PRG) or L18-3 (PRG) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

CHECK WIRE HARNESS (DOOR CONTROL RECEIVER - BATTERY AND BODY GROUND)

Disconnect the L18 receiver connector.

Fig 2: Identifying L18 Receiver Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Measure the resistance and voltage of the wire harness side connector.

Standard resistance

STANDARD RESISTANCE

Tester Connection	Specified Condition
L18-1 (GND) - Body ground	Below 1 Ω

Standard voltage

STANDARD VOLTAGE

Tester Connection	Specified Condition
L18-5 (+B) - Body ground	10 to 14 V

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

OK: Go to next step

REPLACE DOOR CONTROL RECEIVER
1. Temporarily replace the door control receiver with a new or normally functioning one.
2. Perform the REGISTRATION procedures (see REGISTRATION ).
CHECK FOR DTC
1. Clear the DTC (see DATA LIST / ACTIVE TEST ).
2. Recheck for DTC.
  OK:
  
  DTC B1242 is not output.
NG: REPLACE INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU)

OK: END (DOOR CONTROL RECEIVER IS DEFECTIVE)