Toyota Camry (XV70): Diagnosis System
Toyota Camry Repair Manual XV70 (2018-2024) / Power Source, Network / Networking / Lin Communication System / Diagnosis System
DIAGNOSIS SYSTEM
DESCRIPTION
The main body ECU (multiplex network body ECU) and certification ECU (smart key ECU assembly) control the LIN communication system. LIN communication system data and Diagnostic Trouble Codes (DTCs) can be read through the Data Link Connector 3 (DLC3).
When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
CHECK DLC3
(a) Check the DLC3.
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INSPECT BATTERY VOLTAGE
(a) Measure the battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery.
READ NEXT:
Dtc Check / Clear
DTC CHECK / CLEAR CHECK DTC (a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON. (c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Main Body or Sm
Data List / Active Test
DATA LIST / ACTIVE TEST DATA LIST HINT:
Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any parts.
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART LIN Communication System
DTC No. Detection Item
Link B1206
P/W Master Switch Communication Stop
B1273 Sliding Roof ECU Communica
SEE MORE:
Sound of Portable Player cannot be Heard from Speakers or Sound is Low
PROCEDURE
1. CHECK PORTABLE PLAYER SETTINGS
(a) Check the portable player settings. (1) Check that the volume is not set to "0".
(2) Check that mute is off. (b) Check that the sound of the portable player can be heard from the speakers.
OK: Sound of the portable player can be hear
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 s
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