IG Signal Circuit
DESCRIPTION
This circuit detects whether the ignition switch is ON or off, and sends this
information to the main body ECU (multiplex network body ECU).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing
the fol ...
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE PRESSURE RELIEF VALVE
(a) Remove the pressure relief valve and O-ring.
2. REMOVE MAGNET CLUTCH ASSEMBLY
(a) Secure the cooler compressor assembly in a vise between aluminum plates.
(b) Using SST, hold the magnet clutch hub.
SST: 09985-00260
(c) Remove the ...
Lost Communication with Power Source Control (B278C)
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
B278C
An internal malfunction occurs in the certification ECU (smart key ECU
assembly)
Certification ECU (smart key ECU assembly)
CAUTI ...