CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND POWER DISTRIBUTION BOX ASSEMBLY
| *A | Main Body ECU (Multiplex Network Body ECU) with 2 connectors | - | - |
| *1 | Power Distribution Box Assembly | *2 | Main Body ECU (Multiplex Network Body ECU) |
| *A | Main Body ECU (Multiplex Network Body ECU) with 3 connectors | - | - |
| *1 | Power Distribution Box Assembly | *2 | Main Body ECU (Multiplex Network Body ECU) |
Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.
Connect the power distribution box assembly connector.
Measure the voltage and resistance according to the value(s) in the table below.
Measure the values on the wire harness side with the connectors connected.
| Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition | Related Data List Item |
|---|---|---|---|---|
| A-13 (GND1) - Body ground | Ground | Always | Below 1 Ω | - |
| A-26 (BECU) - Body ground | Battery power supply | Always | Always | - |
| A-27 (IGR) - Body ground | IG power supply | Ignition switch ON | 11 to 14 V | IGR Power |
| Ignition switch off | Below 1 V |
Install the main body ECU (multiplex network body ECU) to power distribution box assembly.
Measure the voltage and check for pulses according to the value(s) in the table below.
| Terminal No. (Symbol) | Terminal Description | Condition | Specified Condition | Related Data List Item |
|---|---|---|---|---|
| G169-16 (KSW) - Body ground | Unlock warning switch input | No key in ignition key cylinder | 11 to 14 V | Key Unlock Warning Switch |
| Key in ignition key cylinder | Below 1 V | |||
| G169-18 (RDA) - Body ground | Input from door control receiver | Procedure:
1.
Remove key from ignition key cylinder 2.
Close all doors 3.
Press lock or unlock switch of door control transmitter assembly |
11 to 14 V → Pulse generation | - |
| G169-17 (PRG) - Body ground | Output to door control receiver | Key inserted into ignition key cylinder → Key pulled out of ignition key cylinder | 11 to 14 V → Pulse generation → 11 to 14 V | - |