Mitsubishi Electric 55624R(S)-MF Service Manual page 173

5. DOOR SWITCH (LEFT-FRONT DOOR AND RIGHT-FRONT DOOR) INPUT CIRCUIT
Sub fusible link
JIB
Door switch
THEFT-ALARM SYSTEM
Description of operation
When the door is closed (the door switch is switched OFF),
HIGH-level signals are sent to the ECU:
When the door is opened (the door switch is switched ON).
LOW-level signals are sent to the ECU.
ECU terminal voltage (Connection condition of the ECU)
ECU
terminal No.
by using an oscilloscope.
Checking the door switch circuit (Disconnect the connector of
the ECU and check at the wiring harness side)
Diode
Checking individual part:
Door switch - Refer to GROUP 42-Door Assembly.
Signal Condition
I
Terminal
voltage