DESCRIPTION
LOCATION
The Active Control Engine Mount (ACM) system decreases engine vibration at engine idling using the ACM VSV. The VSV is controlled by a pulse signal transmitted to the VSV from the ECM. The frequency of this pulse signal is matched to the engine speed to decrease engine vibration.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK VACUUM HOSES
2 CHECK VACUUM
OK: Vacuum pressure exists.
3 INSPECT ECM
Standard voltage
4 INSPECT DUTY VACUUM SWITCHING VALVE (RESISTANCE)
Standard resistance: 19 to 21 Ω at 20C (68F)
5 CHECK HARNESS AND CONNECTOR (VSV FOR ACM - ECM)
Standard resistance: Check for open
Check for open
6 INSPECT FUSE (EFI NO. 2 FUSE)
Standard resistance: Below 1 Ω
7 INSPECT RELAY (EFI RELAY)
Standard resistance
8 CHECK HARNESS AND CONNECTOR (VSV FOR ACM - EFI RELAY)
Standard resistance: Check for open
CHECK ECM POWER SOURCE CIRCUIT
9 INSPECT DUTY VACUUM SWITCHING VALVE (OPERATION)
Positive battery voltage is not applied: The air from pipe G is flowing out through pipes E and H.
Positive battery voltage is applied: The air from pipe F is flowing out through pipes E and H.
10 INSPECT ENGINE MOUNTING INSULATOR ASSEMBLY FRONT
OK: Vacuum pressure exists.
SYSTEM OK
Vehicle exterior
Items
Check points
Doors
Do the doors operate smoothly?
Engine hood
Does the engine hood lock system work
properly?
Fluid leaks
There should not be any signs of fluid
leakage after the vehicle ha ...
Occupant Classification ECU Malfunction
DTC B1795 Occupant Classification ECU Malfunction
DESCRIPTION
DTC B1795 is recorded when a malfunction is detected in the occupant
classification ECU.
Troubleshoot DTC B1771 first when the DTCs B1771 and B1795 are output
simultaneously.
DTC No.
DTC Detecting Condition
...
Throttle Actuator Control System
DESCRIPTION
The throttle actuator is operated by the ECM, and opens and closes the
throttle valve using the gears.
The opening angle of the throttle valve is detected by the Throttle Position
(TP) sensor, which is mounted
on the throttle body. The TP sensor provides feedback to the ECM ...