Multiplex Communication System
TERMINALS OF ECU1. INSPECT INSTRUMENT PANEL J/B ASSY (MULTIPLEX NETWORK BODY ECU)
Terminals Of Control Module / Pinouts:
a. Disconnect the B7 ECU, 1C, 1E, 1K and 1L and 1C J/B connectors.
b. Check the voltage and resistance between each terminal of the wire harness side connectors and body ground.
If the result is not as specified, there may be a malfunction on the wire harness side.
2. CHECK AIRBAG SENSOR ASSY (AIRBAG ECU)
a. Disconnect the A21 ECU connector.
Terminals Of Control Module / Pinouts:
b. Check the voltage and resistance of each terminal of the wire harness side.
If the result is not as specified, there may be a malfunction on the wire harness side.
3. CHECK ECM
Terminals Of Control Module / Pinouts:
a. Disconnect the E4, E5 and E6 ECM connectors.
b. Check the voltage and resistance of each terminal of the wire harness side connector.
If the result is not as specified, there may be a malfunction on the wire harness side.
4. CHECK A/C AMPLIFIER ASSY (A/C ECU)
Terminals Of Control Module / Pinouts:
a. Disconnect the A9 ECU connector.
b. Check the voltage and resistance of each terminal of the wire harness side connector.
If the result is not as specified, there may be a malfunction on the wire harness side.
5. CHECK COMBINATION METER
Terminals Of Control Module / Pinouts:
a. Disconnect the C10 meter connector.
b. Check the voltage and resistance of each terminal of the wire harness side connector.
If the result is not as specified, there may be a malfunction on the wire harness side.
6. CHECK MULTIPLEX NETWORK DOOR ECU REAR RH (POWER SLIDE DOOR ECU RH)
Terminals Of Control Module / Pinouts:
a. Disconnect the P27 and P28 ECU connectors.
b. Check the voltage and resistance of each terminal of the wire harness side connectors.
If the result is not as specified, there may be a malfunction on the wire harness side.
7. CHECK MULTIPLEX NETWORK DOOR ECU REAR LH (POWER SLIDE DOOR ECU LH)
Terminals Of Control Module / Pinouts:
a. Disconnect the P25 and P26 ECU connectors.
b. Check the voltage and resistance of each terminal of the wire harness side connectors.
If the result is not as specified, there may be a malfunction on the wire harness side.
8. CHECK MULTIPLEX NETWORK DOOR ECU BACK (POWER BACK DOOR ECU)
Terminals Of Control Module / Pinouts:
a. Disconnect the P13 and P14 ECU connectors.
b. Check the voltage and resistance of each terminal of the wire harness side connectors.
If the result is not as specified, there may be a malfunction on the wire harness side.