DESCRIPTION
This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and steering lock ECU steering lock actuator or upper bracket assembly) stops for 10 seconds or more.
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
---|---|---|---|
B2786 |
No Response from Steering Lock ECU |
No communication between steering lock ECU (steering lock actuator or upper bracket assembly) and certification ECU (smart key ECU assembly) for 10 seconds or more. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Click here
PROCEDURE
1. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY)) |
(a) Disconnect the F1 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the F78 steering lock ECU (steering lock actuator or upper bracket assembly) connector.
(c) Measure the resistance according to the value(s) in the table below.
NOTICE:
Make sure that each ECU is in sleep mode before performing the inspection. To enter sleep mode, turn the ignition switch from ON to off and wait for 180 seconds or more without operating any switches.
Standard Resistance:
Tester Connection |
Switch Condition |
Specified Condition |
---|---|---|
F1-13 (LIN) - F78-5 (LIN) |
Ignition switch off |
Below 1 Ω |
F1-13 (LIN) or F78-5 (LIN) - Body ground |
Ignition switch off |
10 kΩ or higher |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
2. |
CHECK HARNESS AND CONNECTOR (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) - BATTERY, BODY GROUND) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F78-7 (B) - F78-1 (GND) |
Always |
11 to 14 V |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
F78-1 (GND) - Body ground |
Always |
Below 1 Ω |
NG | ![]() |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
REPLACE STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) |
(a) Replace the steering lock ECU (steering lock actuator or upper bracket assembly).
Click here
|
4. |
REGISTER ECU CODE REGISTRATION |
(a) Register the recognition codes in the ECUs.
HINT:
Refer to Registration.
Click here
|
5. |
CHECK FOR DTC |
(a) Clear the DTCs.
Click here
(b) Recheck for DTCs.
Body Electrical > Smart Key > Trouble CodesOK:
DTC B2786 is not output.
OK | ![]() |
END (STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) WAS DEFECTIVE) |
NG | ![]() |
REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) |
Toyota CH-R Owners Manual > Adjusting the steering wheel and mirrors: Steering wheel
Adjustment procedure
1. Hold the steering wheel and push the lever down.
2. Adjust to the ideal position by moving the steering wheel horizontally and
vertically.
After adjustment, pull the lever up to secure the steering wheel.
Horn
To sound the horn, press on or close to the
mark.
...
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Perform the following to protect the vehicle and maintain it in prime
condition:
Working from top to bottom, liberally apply water to the vehicle body, wheel
wells and underside of the vehicle to remove any dirt and dust.
Wash the vehicle body using a sponge or soft cloth, such as a chamo ...