CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
| *A | for LHD | *B | for RHD |
| *1 | Main body ECU (multiplex network body ECU) | - | - |
Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Reconnect the instrument panel junction block assembly connectors.
Measure the resistance and voltage according to the value(s) in the table below.
Measure the values on the wire harness side with the connector disconnected.
| Terminal No. (Symbol) | Wiring Color | Input/Output | Terminal Description | Condition | Specified Condition | Related Data List Item |
|---|---|---|---|---|---|---|
| A-11 (GND1) - Body ground | - | - | Ground | Always | Below 1 Ω | - |
| A-30 (ACC) - Body ground | - | Input | ACC power supply | Ignition switch ACC | 11 to 14 V | ACC SW |
| Ignition switch off | Below 1 V | |||||
| A-31 (BECU) - Body ground | - | Input | Battery power supply | Always | 11 to 14 V | - |
| A-32 (IG) - Body ground | - | Input | IG power supply | Ignition switch ON | 11 to 14 V*1
10.5 to 16 V*2 |
IG SW |
| Ignition switch off | Below 1 V |
*1: w/o Stop and Start System
*2: w/ Stop and Start System
Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.
Measure the voltage and check for pulses according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Input/Output | Terminal Description | Condition | Specified Condition | Related Data List Item |
|---|---|---|---|---|---|---|
| N20-11 (PRG) - Body ground | L - Body ground | Output | 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 | - |
| N20-10 (RDA) - Body ground | G - Body ground | Input | 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 module set sub-assembly |
11 to 14 V → Pulse generation | - |
| 3C-29 (BZR) - Body ground | LG - Body ground | Output | Wireless door lock buzzer output | Active Test Wireless Buzzer on | Pulse generation
(frequency: 2 kHz, high voltage: 11 to 14 V, low voltage: below 1 V) |
- |
| Active Test Wireless Buzzer off | Below 1 V | |||||
| 3A-41 (KSW) - Body ground | W - Body ground | Input | Un-lock warning switch input | No key in ignition key cylinder → Key in ignition key cylinder | 11 to 14 V → Below 1 V | Key Unlock Warning SW |