- Key
- Transponder key amplifier
- Wire harness
- Transponder key ECU assembly
| Last Modified: 6-7-2017 | 6.8:8.0.40 | Doc ID: RM0000016J1002X |
| Model Year Start: 2007 | Model: Land Cruiser | Prod Date Range: [08/2006 - ] |
| Title: ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: B2796,B2798; No Communication in Immobiliser System; 2007 MY Land Cruiser [08/2006 - ] | ||
|
DTC |
B2796 |
No Communication in Immobiliser System |
|
DTC |
B2798 |
Communication Malfunction No. 2 |
DESCRIPTION
This DTC is stored in memory when a key that does not have a transponder chip is inserted or if communication between the key and transponder key ECU is impossible.
|
DTC No. |
DTC Detecting Condition |
Trouble Area |
|---|---|---|
|
B2796 |
No communication in immobiliser system |
|
|
B2798 |
Communication malfunction No. 2 |
Key |
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
DELETE DTC AND INSERT ALL PRESENTLY AVAILABLE KEYS TO CHECK WHETHER ENGINE STARTS OR NOT |
(a)
Delete DTC
![2007 MY Land Cruiser [08/2006 - ]; ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: DTC CHECK / CLEAR](../../../../stylegraphics/info.gif "2007 MY Land Cruiser [08/2006 - ]; ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: DTC CHECK / CLEAR")
.
(b) Insert all the presently available keys to check whether the engine starts or not.
Result:
|
Result |
Proceed to |
|---|---|
|
All keys do not start engine (B2796 is output) |
A |
|
All keys start engine (B2796 is not output) |
B |
|
Specific key does not start engine (B2796 is output) |
C |
| B |
|
| C |
|
|
|
2. |
CHECK WIRE HARNESS (TRANSPONDER KEY ECU ASSEMBLY - TRANSPONDER KEY AMPLIFIER) |
(a) Disconnect the T19 ECU connector.
(b) Disconnect the T10 amplifier connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:
|
Tester Connection |
Specified Condition |
|---|---|
|
T19-8 (VC5) - T10-1 (VC5) |
Below 1 Ω |
|
T19-11 (CODE) - T10-4 (CODE) |
|
|
T19-12 (TXCT) - T10-5 (TXCT) |
|
|
T19-13 (AGND) - T10-7 (GND) |
|
|
T19-8 (VC5) or T10-1 (VC5) - Body ground |
10 kΩ or higher |
|
T19-11 (CODE) or T10-4 (CODE) - Body ground |
|
|
T19-12 (TXCT) or T10-5 (TXCT) - Body ground |
|
|
T19-13 (AGND) or T10-7 (GND) - Body ground |
| NG |
|
|
|
3. |
CHECK OPERATION OF TRANSPONDER KEY AMPLIFIER |
(a) After replacing the transponder key amplifier with a normally functioning transponder key amplifier, check that the engine starts.
OK:
Engine starts.
| NG |
|
| OK |
|
|
|