| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001GV7Z |
| Model Year Start: 2020 | Model: GR Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): B2796,B2798; No Communication in Immobiliser System; 2020 - 2022 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2022] | ||
|
DTC |
B2796 |
No Communication in Immobiliser System |
|
DTC |
B2798 |
Communication Malfunction No. 2 |
DESCRIPTION
This DTC is stored when a door control transmitter assembly is inserted into the ignition key cylinder but no communication occurs between the door control transmitter assembly and transponder key ECU assembly.
|
DTC No. |
Detection Item |
DTC Detection Condition |
Trouble Area |
Note |
|---|---|---|---|---|
|
B2796 |
No Communication in Immobiliser System |
The key ID code cannot be transmitted to the transponder key ECU assembly (1 trip detection logic*). |
|
DTC Output Confirmation Operation:
|
|
B2798 |
Communication Malfunction No. 2 |
Key ID code identification cannot be completed within the specified time (1 trip detection logic*). |
|
DTC Output Confirmation Operation:
|
- *: Only output while a malfunction is present.
Vehicle Condition and Fail-safe Operation when Malfunction Detected
|
Vehicle Condition when Malfunction Detected |
Fail-safe Operation when Malfunction Detected |
|---|---|
|
Engine cannot be started |
- |
Related Data List and Active Test
|
DTC No. |
Data List and Active Test |
|---|---|
|
B2796 |
- |
|
B2798 |
- |
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
If the door control transmitter assembly is replaced, refer to Registration.
Click here
![2020 MY Corolla Corolla Hatchback Corolla HV GR Corolla [01/2019 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: IMMOBILISER SYSTEM (w/o Smart Key System): REGISTRATION](/t3Portal/stylegraphics/info.gif)
- After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".
PROCEDURE
|
1. |
CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - TRANSPONDER KEY COIL) |
(a) Disconnect the I67 transponder key ECU assembly connector.
(b) Disconnect the I64 transponder key coil connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
I67-2 (ANT1) - I64-1 (ANT1) |
Always |
Below 1 Ω |
|
I67-3 (ANT2) - I64-5 (ANT2) |
Always |
Below 1 Ω |
|
I67-2 (ANT1) or I64-1 (ANT1) - Other terminals and body ground |
Always |
10 kΩ or higher |
|
I67-3 (ANT2) or I64-5 (ANT2) - Other terminals and body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE DOOR CONTROL TRANSMITTER ASSEMBLY |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|