Inspection Procedure
- READ VALUE ON TECHSTREAM (BACK DOOR COURTESY LIGHT SWITCH)
- Check the Data List to determine if the back door courtesy light switch function properly.
Back door (Power back door ECU)
DATA LIST REFERENCETester Display Measurement Item/Range Normal Condition Diagnostic Note Courtesy SW Back door courtesy light switch signal/ON or OFF ON: Back door is open
OFF: Back door is closed- OK:
The display is as specified in the normal condition.
NG: Go to step 2
OK: REPLACE POWER BACK DOOR DRIVE UNIT (POWER BACK DOOR ECU) (See REMOVAL )
- INSPECT BACK DOOR LOCK (BACK DOOR COURTESY LIGHT SWITCH)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- Remove the back door lock. (See REMOVAL )
- Measure the resistance according to the value (s) in the table below.
Standard resistance:
Back door courtesy light switch
RESISTANCE SPECIFICATIONTester Connection Door lock latch Position Specified Condition 3 (BDCY) - 4 (GND) Open-latch Below 1 Ω 3 (BDCY) - 4 (GND) Half-latch Below 1 Ω 3 (BDCY) - 4 (GND) Full-latch 10 kΩ or higher 3 (BDCY) - 4 (GND) Over-latch 10 kΩ or higher NG: REPLACE BACK DOOR LOCK (See REMOVAL )
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (BACK DOOR LOCK - POWER BACK DOOR ECU AND BODY GROUND)
- Disconnect the T4 door lock connector.
- Disconnect the 015 ECU connector.
- Measure the resistance according to the value (s) in the table below.
Standard resistance
RESISTANCE SPECIFICATIONTester Connection Condition Specified Condition T4-3 (BDCY) - O15-20 (FUL) Always Below 1 Ω T4-4 (GND) - Body ground Always Below 1 Ω T4-3 (BDCY) - Body ground Always 10 kΩ or higher NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: REPLACE POWER BACK DOOR DRIVE UNIT (POWER BACK DOOR ECU) (See REMOVAL )