Description
The ECM controls the engine idle speed to a specified level via the fine adjustment of the air, which is let into the intake manifold, by operating the electric throttle control actuator. The operating of the throttle valve is varied to allow for optimum control of the engine idling speed. The crankshaft position sensor (POS) detects the actual engine speed and sends a signal to the ECM.
The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value memorized in the ECM. The target engine speed is the lowest speed at which the engine can operate steadily.
The optimum value stored in the ECM is determined by taking into consideration various engine conditions, such as during warming up, deceleration and engine load (air conditioner, power steering and cooling fan operation, etc.).
DTC Logic
DTC DETECTION LOGIC
NOTE: If DTC P0507 is displayed with other DTC, first perform the trouble diagnosis for the other DTC.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always perform the following before conducting the next test.
If the target idle speed is out of the specified value, perform EC-21, "IDLE AIR VOLUME LEARNING : Special Repair Requirement", before conducting DTC Confirmation Procedure.
TESTING CONDITION:
2.PERFORM DTC CONFIRMATION PROCEDURE
Diagnosis Procedure
1.CHECK PCV HOSE CONNECTION
Confirm that PCV hose is connected correctly.
2.CHECK INTAKE AIR LEAKAGE
3.REPLACE ECM
Audible reminders
Brake pad wear warning
The disc brake pads have audible wear warnings.
When a disc brake pad requires replacement, it
makes a high pitched scraping sound when the
vehicle is in motion, whether or not the brake
pedal is depressed. Have the brakes checked as
soon as possible if the warning sou ...
Sunshade motor assembly
Wiring Diagram
...
Unit disassembly and assembly
TORQUE CONVERTER
Exploded View
Torque converter
Transaxle assembly
Disassembly
Remove transaxle assembly. Refer to TM-188,
"Exploded View".
Remove torque converter from transaxle
assembly.
Assembly
Note the following, and i ...