DIAGNOSIS SYSTEM
DESCRIPTION
The main body ECU (multiplex network body ECU) stores DTCs when malfunctions occur.
The diagnostic system allows for reading of the DTCs from the DLC3.
Use the Techstream to check for malfunctions and perform repairs.
CHECK DLC3
(a) Check the DLC3.
Click here
INSPECT BATTERY VOLTAGE
(a) Measure the vehicle battery voltage.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery.
SELF-DIAGNOSTIC MODE (USING Techstream)
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Smart Key / Utility / Wireless Door Lock Diagnosis Mode.
Body Electrical > Smart Key > Utility
Tester Display |
---|
Wireless Door Lock Diagnosis Mode |
(e) Proceed to the next step in accordance with the prompts on the Techstream screen.
(f) Check that the system has switched to self-diagnostic mode by checking the wireless door lock buzzer output pattern.
(g) Check the diagnostic output when an electrical key transmitter sub-assembly switch is pressed. The diagnostic outputs can be checked by the wireless door lock buzzer pattern.
Wireless Door Lock Buzzer Output |
Suspected Area |
---|---|
A |
Normal (No malfunction) |
B |
Register electrical key transmitter sub-assembly |
C |
Wave interference or malfunction of a related component |
Toyota CH-R Service Manual > Smart Key System(for Start Function): How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use these procedures to troubleshoot the smart key system (for Start
Function).
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
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Toyota CH-R Service Manual > Occupant Classification System: Occupant Classification ECU Malfunction (B1795)
DESCRIPTION
DTC B1795 is stored when a malfunction is detected in the occupant detection
ECU.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
B1795
Occupant Classification ECU Malfunction
Occupant dete ...