Theft Deterrent / Keyless Entry

Diagnostic Trouble Code Chart

~1min read
DIAGNOSTIC TROUBLE CODE CHART

HINT:

If a trouble code is stored during the DTC check, inspect the trouble areas listed for that code. For details of the code, refer to the "See page" below.

1. CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) DIAGNOSTIC TROUBLE CODE CHART

Certification ECU (Smart Key ECU Assembly)

DTC Code

Detection Item

Trouble Area

See page

B2784

Antenna Coil Open / Short

1. Engine switch

2. Certification ECU (Smart key ECU assembly)

B278A

Short to GND in Immobiliser System Power Source Circuit

1. Wire harness or connector

2. Engine switch

3. Certification ECU (Smart key ECU assembly)

2. ECM DIAGNOSTIC TROUBLE CODE CHART

HINT:

The DTCs for the engine immobiliser system are specified above. If the other codes are output, check the DTC chart for the SFI system.

ECM

DTC Code

Detection Item

Trouble Area

See page

B2799

Engine Immobiliser System Malfunction

1. Wire harness or connector

2. ECM

3. Certification ECU (Smart key ECU assembly)

B279A

Theft Deterrent System Communication Line High Fixation

1. Wire harness or connector

2. ECM

3. Certification ECU (Smart key ECU assembly)

B279C

Theft Deterrent System Presence Detection

ECM

Test yourself

A quick Toyota Venza quiz: every answer comes with an explanation and a link to the manual page.