Diagnosis Procedure
1.CHECK CONNECTOR
2.CHECK HARNESS FOR OPEN CIRCUIT

3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AV control unit. Refer to the following.
- Models without BOSE audio with color display: AV-231, "AV CONTROL UNIT : Diagnosis Procedure" - Models with BOSE audio with color display: AV-388, "AV CONTROL UNIT : Diagnosis Procedure" - Models with BOSE audio with color display with navigation system: AV-571, "AV CONTROL UNIT : Diagnosis Procedure"
M&A branch line circuit
HVAC branch line circuitB2630, B2631 sunload sensor
Description
COMPONENT DESCRIPTION
Sunload Sensor
The sunload sensor (1) is located on the driver side defroster
grille.
It detects sunload entering through windshield by means of a
photo diode. The sensor converts the sunload into a current value,
which is then input into the A/C auto ...
U1000 CAN comm circuit
Description
CAN (Controller Area Network) is a serial communication line for real time
application. It is an on-vehicle multiplex
communication line with high data communication speed and excellent malfunction
detection ability.
Many electronic control units are equipped onto a vehicle, an ...
B2622 inside key antenna 2
Description
Detects whether Intelligent Key is inside the vehicle.
Installed under the center console.
DTC Logic
NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following
functions. Refer to the Signal Tech II
User Guide for additional information.
Check Intelli ...