IMU (Inertial Measurement Unit) Communication Error (Service Code E8F)
IMU Communication Line Inspection
When the data (for status of IMU) is not sent from the IMU
to the ECU, the service code E8F is displayed.
The data is sent through the CAN communication line.
The service code E8F is detected with the ECU.
When the service code E8F is detected, the IMU indicator
[A] blinks, yellow warning indicator light (LED) [B] goes on
and code of E8F [C] displayed on the LCD.
Disconnect the ECU and IMU connectors, and check the
wiring for continuity between main harness connectors.
Wiring Continuity Inspection
ECU Connector [A] ←→ IMU Connector [B]
ECU Terminal 60 [C] ←→ IMU Terminal [D]
ECU Terminal 61 [E] ←→ IMU Terminal [F]
If the wiring is good, replace the IMU (see IMU Installa-
If the IMU is normal, check the ECU for its ground and
power supply (see ECU Power Supply Inspection in the
Fuel System (DFI) chapter).
If the ground and power supply are good, replace the ECU
(see ECU Removal/Installation in the Fuel System (DFI)
SELF-DIAGNOSIS SYSTEM 17-127