Toyota Tundra (2015 year). Manual — part 2368
NEXT
NEXT
NEXT
1.
CLEAR DTC
(a) Clear the DTC
.
2.
CHECK FOR DTC
(a) Check for DTC
.
OK:
DTC B2799 is not output.
NG
GO TO STEP 3
OK
USE SIMULATION METHOD TO CHECK
3.
REREGISTER ECU - ECM COMMUNICATION ID
(a) Reregister the ECU - ECM communication ID
.
4.
CLEAR DTC
(a) Clear the DTC
.
5.
CHECK FOR DTC
(a) Check for DTC
.
OK:
DTC B2799 is not output.
NG
GO TO STEP 6
ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: B2799; E...
OK
OK
END
6.
CHECK CONNECTION OF CONNECTOR
(a) Turn the ignition switch off.
(b) Check that the connectors are properly connected to the ECM and the transponder key ECU.
OK:
Connectors are properly connected.
NG
CONNECT CONNECTOR CORRECTLY
7.
CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU - ECM)
(a) Disconnect the J26 ECU connector.
(b) Disconnect the A24 ECM connector.
(c) Measure the resistance according to the value(s) in the table
below.
Standard resistance:
TESTER CONNECTION
CONDITION
SPECIFIED
CONDITION
J26-13 (EFIO) - A24-40 (IMI)
Always
Below 1 Ω
J26-12 (EFII) - A24-29 (IMO)
J26-13 (EFIO) or A24-40 (IMI) -
Body ground
Always
10 kΩ or higher
J26-12 (EFII) or A24-29 (IMO) -
Body ground
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: B2799; E...
OK
NEXT
NEXT
8.
REPLACE TRANSPONDER KEY ECU
(a) Temporarily replace the transponder key ECU with a new one
.
9.
CLEAR DTC
(a) Clear the DTC
.
10.
CHECK FOR DTC
(a) Check for DTC
.
Result
RESULT
PROCEED TO
DTC B2799 is not output
A
DTC B2799 is output (for 1UR-FE)
B
DTC B2799 is output (for 3UR-FE)
C
DTC B2799 is output (for 3UR-FBE)
D
B
REPLACE ECM
C
REPLACE ECM
D
REPLACE ECM
A
END (TRANSPONDER KEY ECU IS DEFECTIVE)
ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: B2799; E...
Last Modified: 9-16-2014
6.6 C
Doc ID: RM000002X2F06DX
Model Year: 2015
Model: Tundra
Prod Date Range: [08/2014 - ]
Title: ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: B279A; Theft Deterrent System Communication
Line High Fixation; 2015 MY Tundra [08/2014 - ]
DTC
B279A
Theft Deterrent System Communication Line High Fixation
DESCRIPTION
If the communication line (EFIO-IMI) to the transponder key ECU is stuck on HI output, the ECM outputs this DTC.
DTC
CODE
DTC DETECTION CONDITION
TROUBLE AREA
B279A
When communication line (EFIO-IMI) between ECM and transponder key
ECU is stuck on HI output for 6 seconds or more
Harness or
connector
Transponder key
ECU
ECM
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1.
CLEAR DTC
(a) Clear the DTC
.
ENGINE IMMOBILISER: ENGINE IMMOBILISER SYSTEM: B279A; ...
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