SYSTEM DIAGRAM
System Description
How To Proceed With TroubleshootingSliding Roof ECU Communication Stop (B1273)
DESCRIPTION
This DTC is stored when LIN communication between the sliding roof ECU (sliding
roof drive gear sub-assembly) and main body ECU (driver side junction block assembly)
stops for more than 10 seconds.
DTC No.
DTC Detection ...
Removal
REMOVAL
CAUTION / NOTICE / HINT
NOTICE:
Do not remove the oil pump or oil pump relief valve from the timing chain cover
sub-assembly.
PROCEDURE
1. INSTALL ENGINE ON ENGINE STAND
(See page )
2. REMOVE IGNITION COIL ASSEMBLY
3. REMOVE CYLINDER HEAD ...
Random Access Memory (RAM) (P0604)
MONITOR DESCRIPTION
The ECM continuously monitors its internal memory status. This self-check ensures
that the ECM is functioning properly. It is diagnosed by internal "mirroring" of
the main CPU and sub CPU to detect Random Access Memory (RAM) ...