POWER DOOR LOCK CONTROL SYSTEM TERMINALS OF ECU
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CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
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Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
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Reconnect the instrument panel junction block assembly connectors.
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Measure the resistance and voltage according to the value(s) in the table below.
Tech Tips
Measure the values on the wire harness side with the connectors disconnected.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition MB-11 (GND1) - Body ground - Ground Always Below 1 Ω MB-31 (BECU) - Body ground - Auxiliary battery power supply Power switch off 11 to 14 V MB-30 (ACC) - Body ground - ACC power supply Power switch on (ACC) 11 to 14 V MB-30 (ACC) - Body ground - ACC power supply Power switch off Below 1 V MB-32 (IG) - Body ground - IG power supply Power switch on (IG) 11 to 14 V MB-32 (IG) - Body ground - IG power supply Power switch off Below 1 V -
Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.
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Measure the voltage and check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition 4B-3 (ACT-) - Body ground L - Body ground Door lock motor unlock drive output (except driver door) Unlock side of door control switch (multiplex network master switch assembly) not pushed and driver door key cylinder not turned Below 1 V 4B-3 (ACT-) - Body ground L - Body ground Door lock motor unlock drive output (except driver door) Unlock side of door control switch (multiplex network master switch assembly) pushed or driver door key cylinder turned to unlock position 11 to 14 V 4B-2 (ACTD) - Body ground L - Body ground Door lock motor unlock drive output (for driver door) Unlock side of door control switch (multiplex network master switch assembly) not pushed and driver door key cylinder not turned Below 1 V 4B-2 (ACTD) - Body ground L - Body ground Door lock motor unlock drive output (for driver door) Unlock side of door control switch (multiplex network master switch assembly) pushed or driver door key cylinder turned to unlock position 11 to 14 V 4D-7 (ACT+) - Body ground R - Body ground Door lock motor lock drive output (all doors) Lock side of door control switch (multiplex network master switch assembly) not pushed and driver door key cylinder not turned to lock position Below 1 V 4D-7 (ACT+) - Body ground R - Body ground Door lock motor lock drive output (all doors) Lock side of door control switch (multiplex network master switch assembly) pushed or driver door key cylinder turned to lock position 11 to 14 V 4B-6 (ACT+) - Body ground R - Body ground Door lock motor lock drive output (all doors) Lock side of door control switch (multiplex network master switch assembly) not pushed and driver door key cylinder not turned to lock position Below 1 V 4B-6 (ACT+) - Body ground R - Body ground Door lock motor lock drive output (all doors) Lock side of door control switch (multiplex network master switch assembly) pushed or driver door key cylinder turned to lock position 11 to 14 V O2-27 (FRCY) - Body ground V - Body ground Front door courtesy light switch RH input Front door RH open Below 1 V O2-27 (FRCY) - Body ground V - Body ground Front door courtesy light switch RH input Front door RH closed 11 to 14 V O2-6 (FLCY) - Body ground V - Body ground Front door courtesy light switch LH input Front door LH open Below 1 V O2-6 (FLCY) - Body ground V - Body ground Front door courtesy light switch LH input Front door LH closed 11 to 14 V 4B-25 (L1) - Body ground G - Body ground*1
L - Body ground*2
Door control switch input Lock side of door control switch pushed Below 1 V 4B-25 (L1) - Body ground G - Body ground*1
L - Body ground*2
Door control switch input Lock side of door control switch not pushed Pulse generation 4B-24 (UL1) - Body ground Y - Body ground*1
LG - Body ground*2
Door control switch input Unlock side of door control switch pushed Below 1 V 4B-24 (UL1) - Body ground Y - Body ground*1
LG - Body ground*2
Door control switch input Unlock side of door control switch the not pushed Pulse generation O2-29 (L2) - Body ground L - Body ground*1
G - Body ground*2
Driver door key-linked lock input Driver door key cylinder turned to lock position Below 1 V O2-29 (L2) - Body ground L - Body ground*1
G - Body ground*2
Driver door key-linked lock input Driver door key cylinder not turned to lock position Pulse generation O2-2 (UL3) - Body ground LG - Body ground*1
Y - Body ground*2
Driver door key-linked unlock input Driver door key cylinder turned to unlock position Below 1 V O2-2 (UL3) - Body ground LG - Body ground*1
Y - Body ground*2
Driver door key-linked unlock input Driver door key cylinder not turned to unlock position Pulse generation 4B-26 (LSFL) - Body ground G - Body ground Front door LH unlock detection switch input Front door LH unlocked Below 1 V 4B-26 (LSFL) - Body ground G - Body ground Front door LH unlock detection switch input Front door LH locked Pulse generation 4B-27 (LSFR) - Body ground B - Body ground Front door RH unlock detection switch input Front door RH unlocked Below 1 V 4B-27 (LSFR) - Body ground B - Body ground Front door RH unlock detection switch input Front door RH locked Pulse generation 4D-16 (LGCY) - Body ground G - Body ground Luggage door courtesy light switch input Luggage compartment door open Below 1 V 4D-16 (LGCY) - Body ground G - Body ground Luggage door courtesy light switch input Luggage compartment door closed 11 to 14 V 4D-1 (TR+) - Body ground B - Body ground Luggage compartment door lock motor unlock drive output Luggage compartment door opener switch (open switch) pushed 11 to 14 V 4D-1 (TR+) - Body ground B - Body ground Luggage compartment door lock motor unlock drive output Luggage compartment door opener switch (open switch) not pushed Below 1 V 4A-7 (GSW) - Body ground B - Body ground Airbag ECU signal (collision detection signal) Power switch on (IG) with airbag ECU assembly connector disconnected 4.3 to 5.5 V
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*1: for LHD
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*2: for RHD
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CHECK DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY (w/ Double Locking System)
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Disconnect the O143 double lock door control relay assembly connector.
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Measure the voltage and resistance according to the value(s) in the table below.
Tech Tips
Measure the values on the wire harness side with the connector disconnected.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition O143-12 (+B) - Body ground W - Body ground Auxiliary battery power supply Power switch off 11 to 14 V O143-11 (CPUB) - Body ground LG - Body ground Auxiliary battery power supply Power switch off 11 to 14 V O143-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω -
Reconnect the O143 double lock door control relay assembly connector.
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Measure the voltage and check for pulses according to the value(s) in the table below.
Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition O143-5 (DLPP) - Body ground GR - Body ground Front LH double lock position switch input Double lock unset Pulse generation O143-5 (DLPP) - Body ground GR - Body ground Front LH double lock position switch input Double lock set Below 1 V O143-6 (DLPD) - Body ground G - Body ground Front RH double lock position switch input Double lock unset Pulse generation O143-6 (DLPD) - Body ground G - Body ground Front RH double lock position switch input Double lock set Below 1 V O143-8 (ACTS) - Body ground V - Body ground All door double lock motor set on output Double lock unset Below 1 V O143-8 (ACTS) - Body ground V - Body ground All door double lock motor set on output Double lock set 11 to 14 V O143-1 (ACTR) - Body ground P - Body ground All door double lock motor set off output Double lock set Below 1 V O143-1 (ACTR) - Body ground P - Body ground All door double lock motor set off output Double lock unset 11 to 14 V
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