Manual air conditioning
systemPassenger side buckle switch circuit malfunction
   
Description
The passenger side buckle switch circuit consists of the occupant 
classification ecu and the front seat
inner belt rh.
Dtc b1771 is recorded when a malfunction is detected in the passenger side 
buckle switch circuit.
Troubleshoot dtc b1771 first when dtcs b1771 and b1795  ...
   
Engine
   On-vehicle inspection
	Inspect engine coolant
	Inspect engine oil
	Inspect battery
	Inspect air cleaner filter element subassembly
	Remove the air cleaner cap.
	Remove the air filter element.
	Visually check that the air filter is not excessively
	damaged or oily.
	If necessary, rep ...
   
Check for intermittent problems
   
	Check for intermittent problems
Hint:
A momentary interruption (open circuit) in the connectors
and/or wire harness between the sensors and ecus can
be detected by using the ecu data list function of an
intelligent tester.
	Turn the ignition switch off and connect the
	intelligent test ...