DESCRIPTION
Based on changes in the power source voltage, the main body ECU (multiplex network body ECU) can detect if the auxiliary battery has been disconnected and reconnected.
WIRING DIAGRAM
*a | from Auxiliary Battery |
*b | ECU-DCC NO. 2 |
*c | Instrument Panel Junction Block Assembly |
*d | Main Body ECU (Multiplex Network Body ECU) |
CAUTION / NOTICE / HINT
Note
Before replacing the main body ECU (multiplex network body ECU), refer to Service Bulletin.
Inspect the fuses for circuits related to this system before performing the following procedure.
PROCEDURE
CHECK HARNESS AND CONNECTOR (POWER SUPPLY)
Disconnect the 3F instrument panel junction block assembly connector.
Measure the voltage according to the value(s) in the table below.
Standard Voltage | ||||||
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|
Result | |||
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|
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
OK |
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
Remove the main body ECU (multiplex network body ECU).
*a | Component without harness connected (Instrument Panel Junction Block Assembly) |
- | - |
Measure the resistance according to the value(s) in the table below.
Standard Resistance | ||||||
---|---|---|---|---|---|---|
|
Result | |||
---|---|---|---|
|
OK |
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) Click here |
NG |
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY Click here |