Terminals Of Ecu [06/2015 - ]
- CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
- Remove the main body ECU (multiplex network body ECU) from instrument panel junction block assembly.
Refer to REMOVAL [06/2015 - 11/2018] , or refer to REMOVAL [11/2018 - ]
*1 Main Body ECU (Multiplex Network Body ECU) - - - Reconnect the instrument panel junction block assembly connectors.
- Measure the resistance and voltage according to the value(s) in the table below.
HINT:
Measure the values on the wire harness side with the connector disconnected.
Tester Connection Wiring Color Terminal Description Condition Specified Condition MB-31 (BECU) - Body ground - +B power supply Power switch off 11 to 14 V MB-32 (IG) - Body ground - IG power supply (IG signal) Power switch on (IG) → off 11 to 14 V → Below 1 V MB-30 (ACC) - Body ground - ACC power supply (ACC signal) Power switch on (ACC) → off 11 to 14 V → Below 1 V MB-11 (GND1) - Body ground - Ground Always Below 1 Ω G6-6 (FLCY) - Body ground P - Body ground Front door courtesy light switch assembly (for LH) input Front door LH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω G6-27 (FRCY) - Body ground L - Body ground Front door courtesy light switch assembly (for RH) input Front door RH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω MB-13 (LCTY) - Body ground - Rear door courtesy light switch assembly (for LH) input Rear door LH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω MB-2 (RCTY) - Body ground - Rear door courtesy light switch assembly (for RH) input Rear door RH closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω MB-4 (LGCY) - Body ground - Luggage compartment door courtesy light switch input Luggage compartment door closed (OFF) → open (ON) 10 kΩ or higher → Below 1 Ω G6-11 (HCTY) - Body ground W - Body ground Hood courtesy switch input Hood open (OFF) → closed (ON) 10 kΩ or higher → Below 1 Ω G6-18 (TKUL) - Body ground L - Body ground Luggage compartment door unlock switch input Luggage compartment door lock key cylinder in neutral position → unlock position 10 kΩ or higher → Below 1 Ω MB-14 (TRLY) - Body ground - Taillight relay driver output Power switch off 11 to 14 V If the result is not as specified, there may be a malfunction in the wire harness.
- Install the main body ECU (multiplex network body ECU) to instrument panel junction block assembly.
Refer to INSTALLATION [06/2015 - 11/2018] , or refer to INSTALLATION [11/2018 - ]
- Measure the voltage and check for pulses according to the value(s) in the table below.
Tester Connection Wiring Color Terminal Description Condition Specified Condition 4B-26 (LSFL) - Body ground P - Body ground Front door LH unlock detection switch input Front door LH unlocked Below 1 V Front door LH locked Pulse generation 4B-27 (LSFR) - Body ground LG - Body ground Front door RH unlock detection switch input Front door RH unlocked Below 1 V Front door RH locked Pulse generation 4B-23 (LSWL) - Body ground GR - Body ground Rear door LH unlock detection switch input Rear door LH unlocked Below 1 V Rear door LH locked Pulse generation G5-2 (LSWR) - Body ground Y - Body ground Rear door RH unlock detection switch input Rear door RH unlocked Below 1 V Rear door RH locked Pulse generation G6-29 (L2) - Body ground GR - Body ground Driver door key-linked lock input Driver door key cylinder turned to lock position Below 1 V Driver door key cylinder off Pulse generation G6-2 (UL3) - Body ground BR - Body ground Driver door key-linked unlock input Driver door key cylinder turned to unlock position Below 1 V Driver door key cylinder off Pulse generation 4C-26 (SH) - Body ground L - Body ground Security horn assembly drive Security horn assembly sounding
(Theft deterrent system is in alarm sounding state)Pulse generation
(Below 1 V ← → 11 to 14 V)4C-24 (HORN) - Body ground B - Body ground Vehicle horns drive Vehicle horns sounding
(Theft deterrent system is in alarm sounding state)Pulse generation
(Below 1 V ← → 11 to 14 V)4C-29 (HRLY) - Body ground P - Body ground Headlight relay driver output Headlights blinking
(Theft deterrent system is in alarm sounding state)Pulse generation
(Below 1 V ← → 11 to 14 V)G5-4 (MILE) - Body ground SB - Body ground Map light driver output Map light illuminated
(Theft deterrent system is in alarm sounding state)11 to 14 V If the result is not as specified, the main body ECU (multiplex network body ECU) may be malfunctioning.
- Remove the main body ECU (multiplex network body ECU) from instrument panel junction block assembly.