Component Function Check
1.CHECK REFRIGERANT PRESSURE SENSOR FUNCTION
Is the inspection result normal? YES >> INSPECTION END
NO >> Proceed to EC-482, "Diagnosis Procedure".
Diagnosis Procedure
1.CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY
Is the inspection result normal? YES >> GO TO 3.
NO >> GO TO 2.
2.CHECK REFRIGERANT PRESSURE SENSOR POWER SUPPLY CIRCUIT
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
3.CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT
Is the inspection result normal? YES >> GO TO 5.
NO >> Repair or replace error-detected parts.
5.CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to GI-41, "Intermittent Incident".
Is the inspection result normal? YES >> Replace refrigerant pressure sensor. Refer to HAC-108, "Removal and Installation" (with automatic air conditioner) or HAC-183, "Removal and Installation" (with manual air conditioner).
NO >> Repair or replace error-detected parts.
P0420 three way catalyst function
DTC Description
DTC DETECTION LOGIC
The ECM monitors the switching frequency ratio of air fuel ratio (A/F)
sensor 1 and heated oxygen sensor 2.
A three way catalyst (manifold) with high oxygen storage capacity
will indicate a low switching frequency of heated oxygen sensor 2.
As oxygen sto ...
Preparation
Special Service Tool
The actual shape of the tools may differ from those illustrated here.
Tool number
(TechMate No.)
Tool name
Description
—
(J-41425-NIS)
Aluminum tube repair kit
Repairing leaks in A/C tube
—
(J-38873-A)
Drive ...
System
INTERIOR ROOM LAMP CONTROL SYSTEM
INTERIOR ROOM LAMP CONTROL SYSTEM : System Description
SYSTEM DIAGRAM
OUTLINE
Interior room lamps* are controlled by interior room lamp timer control
function of BCM.
*: Map lamp and room lamp (when map lamp switch and room lamp switch are in
...