Toyota Corolla Cross: Problem Symptoms Table

Toyota Corolla Cross (2022-2024) Service Manual / Vehicle Interior / Seat / Rear Seat Reminder System / Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.

Rear Seat Reminder System

Symptom	Suspected Area	Link
Rear seat reminder function does not operate	CAN communication system (for HEV Model)
	CAN communication system (for Gasoline Model)
	IG signal circuit
	Rear door courtesy switch circuit
	Main body ECU (Multiplex network body ECU)
	Power distribution box assembly
	Hybrid vehicle control ECU*1
	ECM*2
	Combination meter assembly

*1: for HEV Model
*2: for Gasoline Model

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DC/DC Converter Voltage Sensor "A"(VL) Stuck On (P1CB59E)

DTC SUMMARY MALFUNCTION DESCRIPTION If an overvoltage malfunction occurs in the boost converter, the motor generator control ECU (MG ECU) detects the malfunction and stores this DTC. The cause of this malfunction may be one of the following: Internal inverter malfunction Inverter with convert

Power Back Door Main Switch

RemovalREMOVAL CAUTION / NOTICE / HINT COMPONENTS (REMOVAL) Procedure Part Name Code 1 LOWER NO. 1 INSTRUMENT PANEL FINISH PANEL 55432D - - - 2 NO. 1 POWER BACK DOOR CONTROL SWITCH 84966A - - - PROCEDURE 1. REMOVE LOWER NO. 1

Toyota Corolla Cross: Problem Symptoms Table

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DC/DC Converter Voltage Sensor "A"(VL) Stuck On (P1CB59E)

Power Back Door Main Switch