Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side).
2.CHECK HARNESS FOR OPEN CIRCUIT
Check the resistance between the data link connector terminals.

BCM branch line circuit
M&A branch line circuitRCTA system operation
1. Side BSW/RCTA Indicator Light
2. BSW/RCTA Indicator
The RCTA system can help alert the driver of an
approaching vehicle when the driver is backing
out of a parking space.
When the shift position is in R (Reverse) and the
vehicle speed is less than approximately 5 mph
(8 km/h), the RC ...
U1255 satellite radio tuner
Descriptio
Part name
Description
SATELLITE RADIO TUNER
Inputs the satellite radio signal from satellite radio antenna
and outputs the sound signal to the AV control unit.
It is controlled with the AV control unit and serial
communicatio ...
ECM branch line circuit
Diagnosis Procedure
1.CHECK CONNECTOR
Turn the ignition switch OFF.
Disconnect the battery cable from the negative terminal.
Check the following terminals and connectors for damage, bend and
loose connection (unit side and connector
side).
- Models without automatic drive positione ...