| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001FNIB |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 12/2021] |
| Title: NETWORKING: LIN COMMUNICATION SYSTEM: B2786; No Response from Steering Lock ECU; 2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021] | ||
|
DTC |
B2786 |
No Response from Steering Lock ECU |
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 actuator with ECU assembly and certification ECU (smart key ECU assembly) for 10 seconds or more. |
|
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
When using the Techstream with the ignition switch off to troubleshoot:
Connect the Techstream to the vehicle, and turn a courtesy light switch on and off at 1.5 second intervals until communication between the Techstream and vehicle begins.
- Inspect the fuses for circuits related to this system before performing the following inspection procedure.
-
Before replacing the certification ECU (smart key ECU assembly) or steering lock actuator with ECU assembly, refer to the smart key system (for start function).
for HV Model: Click here
![2019 MY RAV4 HV [11/2018 - 10/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION](/t3Portal/stylegraphics/info.gif)
for Gasoline Model: Click here
HINT:
When the communication between the steering lock actuator with ECU assembly and certification ECU (smart key ECU assembly) stops, DTC B2785 is also stored.
PROCEDURE
|
1. |
CHECK FOR DTC |
(a) Clear the DTCs.
Click here
Body Electrical > Smart Key > Clear DTCs
(b) Recheck for DTCs.
Click here
Body Electrical > Smart Key > Trouble Codes
OK:
DTC B2786 is not output.
| OK |
|
|
|
2. |
CHECK HARNESS AND CONNECTOR (STEERING LOCK ACTUATOR WITH ECU ASSEMBLY - AUXILIARY BATTERY AND BODY GROUND) |
|
(a) Disconnect the steering lock actuator with ECU assembly connector. |
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G56-1 (GND) - Body ground |
Always |
Below 1 Ω |
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
G56-7 (B) - Body ground |
Ignition switch off |
11 to 14 V |
|
G56-6 (IG2) - G56-7 (B) |
Ignition switch ON |
11 to 14 V |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU [SMART KEY ECU ASSEMBLY] - STEERING LOCK ACTUATOR WITH ECU ASSEMBLY) |
(a) Disconnect the G54 certification ECU (smart key ECU assembly) connector.
(b) Disconnect the G56 steering lock actuator with ECU assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
G54-13 (LIN) - G56-5 (LIN) |
Always |
Below 1 Ω |
| OK |
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|