Multiplex Communication System

MULTIPLEX COMMUNICATION: MULTIPLEX COMMUNICATION SYSTEM: TERMINALS OF ECU

1. CHECK GATEWAY ECU

(a) Disconnect the E23 ECU connector.

(b) Measure the voltage between the specified terminals on the wire harness side connector.

Voltage:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

(c) Measure the resistance between the specified terminals on the wire harness side connector.

Resistance:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

2. CHECK RAIN SENSOR

(a) Disconnect the N3 ECU connector.

(b) Measure the voltage between the specified terminals on the wire harness side connector.

Voltage:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

3. CHECK BODY ECU

(a) Disconnect the II, IA, IE, IF, IM, IR and D6 ECU connectors.

(b) Measure the voltage between the specified terminals on the wire harness side connector.

Voltage:

(*1): w/ Smart Key System

(*2): w/o Smart Key System

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

(c) Measure the resistance between the specified terminals on the wire harness side connector.

Resistance:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

4. CHECK A/C ECU

(a) Disconnect the D37 ECU connector.

(b) Measure the voltage between the specified terminals on the wire harness side connector.

Voltage:

(*1): w/ Smart Key System

(*2): w/o Smart Key System

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

5. CHECK POWER SOURCE CONTROL ECU

(a) Disconnect the D44 ECU connector.

(b) Measure the voltage between the specified terminals on the wire harness side connector.

Voltage:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

6. CHECK CERTIFICATION ECU

(a) Disconnect the D39 ECU connectors.

(b) Measure the voltage between the specified terminals on the wire harness side connector.

Voltage:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

7. CHECK COMBINATION SWITCH ECU

(a) Disconnect the D13 ECU connector.

(b) Measure the voltage between the specified terminals on the wire harness side connector.

Voltage:

(*1): w/ Smart Key System

(*2): w/o Smart Key System

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

8. CHECK POWER SEAT ECU

(a) Disconnect the P13 and P14 ECU connectors.

(b) Measure the voltage between the specified terminals on the wire harness side connector.

Voltage:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

9. CHECK MEMORY MIRROR ECU (LH)

(a) Disconnect the H1 ECU connector.

(b) Measure the voltage between the specified terminals on the wire harness side connector.

Voltage:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

10. CHECK MEMORY MIRROR ECU (RH)

(a) Disconnect the G1 ECU connector.

(b) Measure the voltage between the specified terminals on the wire harness side connector.

Voltage:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

11. CHECK FRONT CONTROLLER

(a) Disconnect the 1E, 1H and 1G ECU connectors.

(b) Measure the voltage between the specified terminals on the wire harness side connector.

Voltage:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

12. COMBINATION METER ECU

(a) Disconnect the E30 ECU connector.

(b) Measure the voltage according to the value(s) in the table below.

Voltage:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

(c) Measure the resistance according to the value(s) in the table below.

Resistance:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

13. CHECK OPTION CONNECTOR

(a) Disconnect the D16 ECU connector.

(b) Measure the resistance between the specified terminals on the wire harness side connector.

Resistance:

If the values do not conform to the conditions specified, there may be a malfunction on the wire harness side.

14. AIRBAG SENSOR ASSEMBLY