DTC Logic

Diagnosis Procedure
1.CHECK USB HARNESS
Visually check USB harness.
U1243 display unit
U1255 satellite radio tunerADP 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).
...
Compressor control function
Description
PRINCIPLE OF OPERATION
A/C compressor is not activated.
Functional circuit diagram
CAN (1): A/C switch signal
: Blower fan motor switch signal
CAN (2): A/C compressor request signal
RX: A/C switch signal
: Fan ON signal
: Defroster signal
Functional initial inspection chart ...
Engine compartment check locations
VQ35DE engine
Engine coolant reservoir
Drive belt location
Engine oil filler cap
Brake fluid reservoir
Air cleaner
Fuse block
Fuse block/Fusible links
Fusible links
Battery
Engine oil dipstick
Radiator cap
Power steering fluid reservoir
Windshield-washer fluid reservo ...