CHECK MAIN BODY ECU
*1 | Cowl Side Junction Block LH | - | - |
*1 | Main Body ECU | - | - |
Remove the main body ECU from the cowl side junction block LH.
for LHD: Click here
for RHD: Click here
Connect the cowl side junction block LH connectors.
Measure the resistance and voltage according to value(s) in the table below.
Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
A-11 (GND1) - Body ground | None - Body ground | Ground | Always | Below 1 Ω |
A-30 (ACC) - Body ground | None - Body ground | ACC power supply | Engine switch on (ACC) | 11 to 14 V |
Engine switch off | Below 1 V | |||
2A-1 (ACC) - 2D-62 (GND2) | None - Body ground | Battery power supply | Always | 11 to 14 V |
A-32 (IG) - Body ground | None - Body ground | IG power supply | Engine switch on (IG) | 11 to 14 V |
Engine switch off | Below 1 V |
Install the main body ECU to the cowl side junction block LH.
for LHD: Click here
for RHD: Click here
Measure the voltage according to the value(s) in the table below.
Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
2H-29 (BZR) - Body ground | G - Body ground | Wireless door lock buzzer signal | Wireless door lock buzzer off | Below 1 V |
Wireless door lock buzzer on | Pulse generation | |||
2I-9 (ACTD) - Body ground | LA-L - Body ground | Door lock motor unlock drive output signal (driver door) | Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off | Below 1 V |
Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked | 11 to 14 V | |||
2J-3 (ACT-) - Body ground | LA-L - Body ground | Door lock motor unlock drive output signal (front passenger side door and rear door RH) | Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off | Below 1 V |
Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked | 11 to 14 V | |||
2J-4 (ACT-) - Body ground | LA-V - Body ground | Door lock motor unlock drive output signal (rear door RH) | Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off | Below 1 V |
Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked | 11 to 14 V | |||
2J-5 (ACT+) - Body ground | LA-B - Body ground*3 LA-R - Body ground*4 |
Door lock motor lock drive output signal (front passenger side door) | Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off | Below 1 V |
Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder locked | 11 to 14 V | |||
2J-6 (ACT+) - Body ground | LA-R - Body ground | Door lock motor lock drive output signal (driver door) | Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off | Below 1 V |
Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder locked | 11 to 14 V | |||
2J-7 (ACT+) - Body ground | LA-GR - Body ground | Door lock motor lock drive output signal (rear door RH) | Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off | Below 1 V |
Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder locked | 11 to 14 V | |||
2J-16 (LSFR) - Body ground | B - Body ground | Front door RH unlock detection switch input signal | Front door RH unlocked | Below 1 V |
Engine switch off, all doors closed and front door RH locked | Pulse generation | |||
2J-19 (LSFL) - Body ground | G - Body ground | Front door LH unlock detection switch input signal | Front door LH unlocked | Below 1 V |
Engine switch off, all doors closed and front door LH locked | Pulse generation | |||
2J-21 (UL1) - Body ground | LG - Body ground | Door control switch assembly input | Door control switch assembly off | Pulse generation |
Door control switch assembly on (unlock) | Below 1 V | |||
2J-21 (UL1) - Body ground*1 | LG - Body ground | Master switch (door control switch) input | Master switch (door control switch) off | Pulse generation |
Master switch (door control switch) on (unlock) | Below 1 V | |||
2J-26 (L1) - Body ground | L - Body ground | Door control switch assembly input | Door control switch assembly off | Pulse generation |
Door control switch assembly on (lock) | Below 1 V | |||
2J-26 (L1) - Body ground*1 | L - Body ground | Master switch (door control switch) input | Master switch (door control switch) off | Pulse generation |
Master switch (door control switch) on (lock) | Below 1 V | |||
2J-29 (RCTY) - Body ground | BE - Body ground | Rear door courtesy light switch assembly RH input signal | Rear door RH open | Below 1 V |
Rear door RH closed | Pulse generation | |||
2K-7 (ACT+) - Body ground | LA-SB - Body ground*5 SB - Body ground*6 |
Door lock motor lock drive output signal (rear door LH) | Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off | Below 1 V |
Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder locked | 11 to 14 V | |||
2K-8 (TR+) - Body ground*7 | G - Body ground | Back door lock motor drive output | Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off | Below 1 V |
Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked | 11 to 14 V | |||
2K-9 (ACT-) - Body ground | LA-P - Body ground*5 P - Body ground*6 |
Door lock motor unlock drive output signal (rear door LH and back door*6) | Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder off | Below 1 V |
Multiplex network master switch assembly (door control switch), power window regulator switch assembly (door control switch) or driver door key cylinder unlocked | 11 to 14 V | |||
2K-31 (BCTY) - Body ground*5, *7 | W - Body ground | Back door courtesy light switch input | Back door closed | Below 1 V |
Back door open | Pulse generation | |||
2K-33 (LSWL) - Body ground | L - Body ground | Rear door LH unlock detection switch input signal | Rear door LH unlocked | Below 1 V |
Engine switch off, all doors closed and rear door LH locked | Pulse generation | |||
2K-34 (LCTY) - Body ground | BE - Body ground | Rear door courtesy light switch assembly LH input signal | Rear door LH open | Below 1 V |
Rear door LH closed | Pulse generation | |||
E117-2 (LSWR) - Body ground | W - Body ground | Rear door RH unlock detection switch input signal | Rear door RH unlocked | Below 1 V |
Engine switch off, all doors closed and rear door RH locked | 11 to 14 V | |||
E117-3 (ACTG) - Body ground*5 | B - Body ground | Collision door lock release signal | Collision door lock release function does not operate | Below 2 V*8 7.3 to 9.9 V*9 |
Collision door lock release function operates | Below 1 V | |||
E118-2 (UL3) - Body ground | P - Body ground | Driver door key-linked unlock input | Driver door key cylinder turned to neutral position | Pulse generation |
Driver door key cylinder turned to on (unlock) | Below 1 V | |||
E118-6 (FLCY) - Body ground | V - Body ground | Front door courtesy light switch assembly LH input signal | Front door LH open | Below 1 V |
Front door LH closed | Pulse generation | |||
E118-17 (LSWB) - Body ground*6 | B - Body ground | Back door unlock detection switch input signal | Back door unlocked | Below 1 V |
Engine switch off, all doors closed and back door locked | 11 to 14 V | |||
E118-27 (FRCY) - Body ground | V - Body ground | Front door courtesy light switch assembly RH input signal | Front door RH open | Below 1 V |
Front door RH closed | Pulse generation | |||
E118-29 (L2) - Body ground | G - Body ground | Driver door key-linked unlock input | Driver door key cylinder turned to neutral position | Pulse generation |
Driver door key cylinder turned to on (lock) | Below 1 V |
*1: for LHD
*2: for RHD
*3: w/ Panic Switch
*4: for GRJ200L-GNANKC, URJ202L-GNTEKC
If the result is not as specified, the ECU may have a malfunction.
CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
Disconnect the E129 and E130 certification ECU (smart key ECU assembly) connectors.
Measure the resistance and voltage according to the value(s) in the table below.
Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
E130-10 (+B) - Body ground | P - Body ground | Battery power supply | Always | 11 to 14 V |
E130-11 (E) - 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 E129 and E130 certification ECU (smart key ECU assembly) connectors.
Measure the voltage according to the value(s) in the table below.
Terminal No. (Symbol) | Wiring Color | Terminal Description | Condition | Specified Condition |
---|---|---|---|---|
E129-18 (RCO) - E130-11 (E) | B - BR | Output to door control receiver (Power supply for door control receiver. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.) |
Procedure: |
Pulse generation (See waveform 1) |
E129-20 (RDAM) - E130- 11 (E) | LG - BR | Door control receiver verifies data received from electrical key transmitter sub-assembly. Door control receiver sends data to ECU and intermittently grounds 12 V signal from certification ECU (smart key ECU assembly). |
Proceed: |
Pulse generation (See waveform 2) |
E130-19 (CSEL) - E130-11 (E) | L - BR | Communication channel switching circuit |
Procedure: |
Below 1 V → 4.5 to 6 V → Below 1 V |
If the result is not as specified, the ECU may have a malfunction.
*a | Before lock or unlock button of electrical key transmitter sub-assembly pressed |
*b | After lock or unlock button of electrical key transmitter sub-assembly pressed |
Using an oscilloscope, check waveform 1.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Item | Content |
---|---|
Tester Connection | E129-18 (RCO) - E130-11 (E) |
Tool Setting | 2 V/DIV., 500 ms/DIV. |
Condition |
Procedure: |
*a | Before lock or unlock button of electrical key transmitter sub-assembly pressed |
*b | After lock or unlock button of electrical key transmitter sub-assembly pressed |
Using an oscilloscope, check waveform 2.
Tech Tips
The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.
Item | Content |
---|---|
Tester Connection | E129-20 (RDAM) - E130-11 (E) |
Tool Setting | 5 V/DIV., 500 ms/DIV. |
Condition |
Procedure: |