NG -- REPAIR OR REPLACE REMOTE ENGINE STARTER WIRE HARNESS
OK -- Continue to next step.
5. REPLACE REMOTE ENGINE STARTER ECU ASSEMBLY
(a) Replace the remote engine starter ECU assembly See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Keyless
Entry/Keyless Starting System/Keyless Start Control Module/Service and Repair/Removal.
NEXT -- Continue to next step.
6. REGISTER REMOTE ENGINE STARTER SYSTEM
(a) Register the remote engine starter system See: Accessories and Optional Equipment/Antitheft and Alarm Systems/Testing and
Inspection/Programming and Relearning/Engine Immobilizer System.
NEXT -- Continue to next step.
7. CHECK ENGINE START (REMOTE ENGINE START FUNCTION)
(a) Check that the engine starts using the remote engine start function.
OK:
Engine starts using remote engine start function.
NG -- REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
OK -- END (REMOTE ENGINE STARTER ECU ASSEMBLY WAS DEFECTIVE)
8. REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
(a) Replace the main body ECU (multiplex network body ECU) See: Body and Frame/Body Control Systems/Body Control
Module/Service and Repair/Removal.
NEXT -- Continue to next step.
9. CHECK ENGINE START (REMOTE ENGINE START FUNCTION)
(a) Check that the engine starts using the remote engine start function.
OK:
Engine starts using remote engine start function.
NG -- REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) See: Accessories and Optional
Equipment/Antitheft and Alarm Systems/Alarm Module/Service and Repair/Removal
OK -- END (MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) WAS DEFECTIVE)
From 08/2009
THEFT DETERRENT / KEYLESS ENTRY: ENGINE IMMOBILISER SYSTEM: B2779: Engine Starter Communication Malfunction
B2779 - Engine Starter Communication Malfunction
DESCRIPTION
This DTC is stored when the ID for the remote engine starter is not registered or the certification ECU (smart key ECU assembly) does not respond,
even though the remote engine starter system (Toyota supplied part) has been operated to start the engine
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