CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY
Disconnect the I11*1 or I22*2 switch connector.
Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| I11-12 (GND) - Body ground*1 | W-B - Body ground | Ground | Always | Below 1 Ω |
| I11-11 (B) - I11-12 (GND)*1 | L - W-B | Battery power supply | Always | 11 to 14 V |
| I22-12 (GND) - Body ground*2 | W-B - Body ground | Ground | Always | Below 1 Ω |
| I22-11 (B) - I22-12 (GND)*2 | L - W-B | Battery power supply | Always | 11 to 14 V |
*1: for LHD
*2: for RHD
If the result is not as specified, there may be a malfunction on the wire harness side.
CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)
Disconnect the 2A, 2B, 2D and E3 ECU connectors.
Measure the voltage and resistance according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| 2B-20 (BATB) - Body ground | L - Body ground | Battery power supply | Always | 11 to 14 V |
| 2A-1 (ALTB) - Body ground | B - Body ground | Power supply | Engine switch on (ACC) | 11 to 14 V |
| 2A-1 (ALTB) - Body ground | B - Body ground | Power supply | Engine switch off | 11 to 14 V |
| 2D-62 (GND2) - Body ground | W-B - Body ground | Ground | Always | Below 1 Ω |
| E3-1 (GND3) - Body ground | BR - Body ground | Ground | Always | Below 1 Ω |
If the result is not as specified, there may be a malfunction on the wire harness side.
Reconnect the 2A, 2B, 2D and E3 ECU connectors.
Measure the voltage according to the value(s) in the table below.
| Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
|---|---|---|---|---|
| E1-24 (DCTY) - Body ground | L*1 - Body ground P*2 - Body ground |
Driver side door courtesy light switch input | Driver side door open | Below 1 V |
| E1-24 (DCTY) - Body ground | L*1 - Body ground P*2 - Body ground |
Driver side door courtesy light switch input | Engine switch off and driver side door courtesy light switch off | Pulse generation (see waveform 1 or 2) |
| E2-21 (PCTY) - Body ground | P*1 - Body ground L*2 - Body ground |
Front passenger side door courtesy light switch input | Front passenger side door open | Below 1 V |
| E2-21 (PCTY) - Body ground | P*1 - Body ground L*2 - Body ground |
Front passenger side door courtesy light switch input | Engine switch off and passenger side door courtesy light switch off | Pulse generation (see waveform 3 or 4) |
| 2C-2 (LCTY) - Body ground | W - Body ground | Rear door LH courtesy light switch input | Rear door LH open | Below 1 V |
| 2C-2 (LCTY) - Body ground | W - Body ground | Rear door LH courtesy light switch input | Engine switch off and rear LH side door courtesy light switch off | Pulse generation (see waveform 5 or 6) |
| E2-7 (RCTY) - Body ground | G - Body ground | Rear door RH courtesy light switch input | Rear door RH open | Below 1 V |
| E2-7 (RCTY) - Body ground | G - Body ground | Rear door RH courtesy light switch input | Engine switch off and rear RH side door courtesy light switch off | Pulse generation (see waveform 7 or 8) |
| E2-25 (BCTY) - Body ground | W - Body ground | Back door courtesy light switch input | Back door open | Below 1 V |
| E2-25 (BCTY) - Body ground | W - Body ground | Back door courtesy light switch input | Engine switch off and back door closed | Pulse generation (see waveform 9 or 10) |
| 2D-3 (ACT+) - Body ground | L - Body ground | Door lock motor lock drive output | Master switch (door control switch) or driver side door key cylinder neutral position | Below 1 V |
| 2D-3 (ACT+) - Body ground | L - Body ground | Door lock motor lock drive output | Master switch (door control switch) or driver side door key cylinder lock | 11 to 14 V |
| 2C-24 (ACT+) - Body ground | L - Body ground | Door lock motor lock drive output | Master switch (door control switch) or driver side door key cylinder neutral position | Below 1 V |
| 2C-24 (ACT+) - Body ground | L - Body ground | Door lock motor lock drive output | Master switch (door control switch) or driver side door key cylinder lock | 11 to 14 V |
| E1-5 (ACTD) - Body ground | B - Body ground | Driver side door lock motor unlock drive output | Master switch (door control switch) or driver side door key cylinder neutral position | Below 1 V |
| E1-5 (ACTD) - Body ground | B - Body ground | Driver side door lock motor unlock drive output | Master switch (door control switch) or driver side door key cylinder unlock | 11 to 14 V |
| 2D-2 (ACT-) - Body ground | B - Body ground | Front passenger side, and rear door RH door lock motor unlock drive output | Master switch (door control switch) or driver side door key cylinder neutral position | Below 1 V |
| 2D-2 (ACT-) - Body ground | B - Body ground | Front passenger side, and rear door RH door lock motor unlock drive output | Master switch (door control switch) or driver side door key cylinder unlock | 11 to 14 V |
| 2C-23 (ACT-) - Body ground | B - Body ground | Rear door LH and RH door lock motor unlock drive output | Master switch (door control switch) or driver side door key cylinder neutral position | Below 1 V |
| 2C-23 (ACT-) - Body ground | B - Body ground | Rear door LH and RH door lock motor unlock drive output | Master switch (door control switch) or driver side door key cylinder unlock | 11 to 14 V |
| E1-10 (UL3) - Body ground | Y*1 - Body ground L*2 - Body ground |
Driver side door lock key switch input | Driver side door key cylinder unlock | Below 1 V |
| E1-10 (UL3) - Body ground | Y*1 - Body ground L*2 - Body ground |
Driver side door lock key switch input | Engine switch off, all doors closed and driver side door key cylinder neutral position | Pulse generation (see waveform 11 or 12) |
| 2D-53 (L2) - Body ground | LG - Body ground | Driver side door lock key switch input | Driver side door key cylinder lock | Below 1 V |
| 2D-53 (L2) - Body ground | LG - Body ground | Driver side door lock key switch input | Engine switch off, all doors closed and driver side door key cylinder neutral position | Pulse generation (see waveform 13 or 14) |
| E1-1 (TR+) - Body ground | L - Body ground | Back door lock motor unlock drive output | Master switch (door control switch) or driver side door key cylinder neutral position | Below 1 V |
| E1-1 (TR+) - Body ground | L - Body ground | Back door lock motor unlock drive output | Master switch (door control switch) or driver side door key cylinder unlock | 11 to 14 V |
| E1-9 (LSWD) - Body ground | BE - Body ground | Driver side door lock position switch input | Driver side door unlocked | Below 1 V |
| E1-9 (LSWD) - Body ground | BE - Body ground | Driver side door lock position switch input | Engine switch off, all doors closed and driver side door locked | Pulse generation (see waveform 15 or 16) |
| E2-27 (LSWP) - Body ground | Y*1 - Body ground BE*2 - Body ground |
Front passenger side door lock position switch input | Front passenger side door unlocked | Below 1 V |
| E2-27 (LSWP) - Body ground | Y*1 - Body ground BE*2 - Body ground |
Front passenger side door lock position switch input | Engine switch off, all doors closed and passenger side door locked | Pulse generation (see waveform 17 or 18) |
| 2C-1 (LSWL) - Body ground | BE - Body ground | Rear door LH lock position switch input | Rear door LH unlocked | Below 1 V |
| 2C-1 (LSWL) - Body ground | BE - Body ground | Rear door LH lock position switch input | Engine switch off, all doors closed and rear door LH locked | Pulse generation (see waveform 19 or 20) |
| E2-5 (LSWR) - Body ground | BE - Body ground | Rear door RH lock position switch input | Rear door RH unlocked | Below 1 V |
| E2-5 (LSWR) - Body ground | BE - Body ground | Rear door RH lock position switch input | Engine switch off, all doors closed and rear door RH locked | Pulse generation (see waveform 21 or 22) |
| E1-26 (BDSU) - Body ground | L - Body ground | Back door opener switch input | Back door opener switch off | Below 1 V |
| E1-26 (BDSU) - Body ground | L - Body ground | Back door opener switch input | Back door opener switch on | Pulse generation (see waveform 23 or 24) |
*1: for LHD
*2: for RHD
If the result is not as specified, the ECU may have a malfunction.
Using an oscilloscope, check waveform 1.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E1-24 (DCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off and driver side door courtesy light switch off |
Using an oscilloscope, check waveform 2.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E1-24 (DCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off and driver side door courtesy light switch off |
Using an oscilloscope, check waveform 3.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E2-21 (PCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off and passenger side door courtesy light switch off |
Using an oscilloscope, check waveform 4.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E2-21 (PCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off and passenger side door courtesy light switch off |
Using an oscilloscope, check waveform 5.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 2C-2 (LCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off and rear LH side door courtesy light switch off |
Using an oscilloscope, check waveform 6.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 2C-2 (LCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off and rear LH side door courtesy light switch off |
Using an oscilloscope, check waveform 7.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E2-7 (RCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off and rear RH side door courtesy light switch off |
Using an oscilloscope, check waveform 8.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E2-7 (RCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off and rear RH side door courtesy light switch off |
Using an oscilloscope, check waveform 9.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E2-25 (BCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off and back door closed |
Using an oscilloscope, check waveform 10.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E2-25 (BCTY) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off and back door closed |
Using an oscilloscope, check waveform 11.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E1-10 (UL3) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and driver side door key cylinder neutral position |
Using an oscilloscope, check waveform 12.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E1-10 (UL3) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and driver side door key cylinder neutral position |
Using an oscilloscope, check waveform 13.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 2D-53 (L2) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and driver side door key cylinder neutral position |
Using an oscilloscope, check waveform 14.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 2D-53 (L2) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and driver side door key cylinder neutral position |
Using an oscilloscope, check waveform 15.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E1-9 (LSWD) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and driver side door locked |
Using an oscilloscope, check waveform 16.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E1-9 (LSWD) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and driver side door locked |
Using an oscilloscope, check waveform 17.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E2-27 (LSWP) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and passenger side door locked |
Using an oscilloscope, check waveform 18.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E2-27 (LSWP) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and passenger side door locked |
Using an oscilloscope, check waveform 19.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 2C-1 (LSWL) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and rear door LH locked |
Using an oscilloscope, check waveform 20.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | 2C-1 (LSWL) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and rear door LH locked |
Using an oscilloscope, check waveform 21.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E2-5 (LSWR) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and rear door RH locked |
Using an oscilloscope, check waveform 22.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E2-5 (LSWR) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and rear door RH locked |
Using an oscilloscope, check waveform 23.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E1-26 (BDSU) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and back door opener switch on |
Using an oscilloscope, check waveform 24.
| Item | Content |
|---|---|
| Terminal No. (Symbol) | E1-26 (BDSU) - Body ground |
| Tool Setting | 5 V/DIV., 20 ms/DIV. |
| Condition | Engine switch off, all doors closed and back door opener switch on |