Toyota Corolla Cross: Power Back Door System
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PARTS LOCATION ILLUSTRATION
*1 POWER BACK DOOR UNIT ASSEMBLY SET LH
*2 MULTIPLEX NETWORK DOOR ECU
*3 POWER BACK DOOR WARNING BUZZER
*4 POWER BACK DOOR UNIT ASSEMBLY SET
CAUTION / NOTICE / HINT
HINT:
The power back door system troubleshooting procedure is based on the premise that the smart key system (for Entry Function) is operating normally. Check the power back
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Inspection
INSPECTION
PROCEDURE
1. INSPECT BRAKE HOLD SWITCH (ELECTRIC PARKING BRAKE SWITCH ASSEMBLY)
(a) Check the resistance.
(1) Measure the resistance according to the value(s) in the
table below.
Standard Resistance:
Tester Connection
DESCRIPTION The battery ECU assembly monitors its internal operation and will store these DTCs when it detects an internal malfunction.
DTC No. Detection Item
DTC Detection Condition
Trouble Area MIL
Warning Indicate Note
P31B549 Hybrid/EV Battery Internal E