Unit disassembly and assembly
Basic inspectionHVAC branch line circuit
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 A/C auto amp. for
damage, bend and loose connection (unit
side and connector side).
2.CHECK HARNESS FOR OPEN CIRCUI ...
Inspection and adjustment
BASIC INSPECTION
BASIC INSPECTION : Special Repair Requirement
1.INSPECTION START
Check service records for any recent repairs that may indicate a
related malfunction, or a current need for
scheduled maintenance.
Open engine hood and check the following:
Harness connectors fo ...
P0171, P0174 fuel injection system function
DTC Logic
DTC DETECTION LOGIC
With the Air/Fuel Mixture Ratio Self-Learning Control, the actual mixture
ratio can be brought closely to the
theoretical mixture ratio based on the mixture ratio feedback signal from A/F
sensor 1. The ECM calculates
the necessary compensation to correct the o ...