Toyota CH-R Service Manual: Terminals Of Ecu

Toyota CH-R Service Manual / Door Lock / Wireless Door Lock Control System(w/ Smart Key System) / Terminals Of Ecu

TERMINALS OF ECU

CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

*A	Main Body ECU (Multiplex Network Body ECU) with 2 Connectors	-	-
*1	Main Body ECU (Multiplex Network Body ECU)	-	-
*a	2 Connectors	-	-

*A	Main Body ECU (Multiplex Network Body ECU) with 1 Connector	-	-
*1	Main Body ECU (Multiplex Network Body ECU)	-	-
*a	1 Connector	-	-

(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.

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(b) Reconnect the instrument panel junction block assembly connectors.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
MB-11 (GND1) - Body ground	-	Ground	Always	Below 1 Ω
MB-30 (ACC) - Body ground	-	ACC power supply	Engine switch on (ACC)	11 to 14 V
MB-30 (ACC) - Body ground	-	ACC power supply	Engine switch off	Below 1 V
MB-31 (BECU) - Body ground	-	Battery power supply	Always	11 to 14 V
MB-32 (IG) - Body ground	-	IG power supply	Engine switch on (IG)	11 to 14 V
MB-32 (IG) - Body ground	-	IG power supply	Engine switch off	Below 1 V

(d) Install the main body ECU (multiplex network body ECU) to the instrument panel junction block assembly.

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(e) 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
3D-14 (LSR) - Body ground	LG - Body ground	Rear door LH/RH unlock detection switch input	Rear door LH or RH unlocked	Below 1 V
3D-14 (LSR) - Body ground	LG - Body ground	Rear door LH/RH unlock detection switch input	Rear door LH and RH locked	Pulse generation
3D-13 (LSFL) - Body ground	B - Body ground	Front door LH unlock detection switch input	Front door LH unlocked	Below 1 V
3D-13 (LSFL) - Body ground	B - Body ground	Front door LH unlock detection switch input	Front door LH locked	Pulse generation
3D-12 (LSFR) - Body ground	GR - Body ground	Front door RH unlock detection switch input	Front door RH unlocked	Below 1 V
3D-12 (LSFR) - Body ground	GR - Body ground	Front door RH unlock detection switch input	Front door RH locked	Pulse generation
F15-2 (UL3) - Body ground	L - Body ground	Driver door key-linked unlock input	Driver door key cylinder in neutral position → on (unlock)	Pulse generation → Below 1 V
F15-29 (L2) - Body ground	G - Body ground	Driver door key-linked lock input	Driver door key cylinder in neutral position → on (lock)	Pulse generation → Below 1 V
F15-6 (FLCY) - Body ground	R - Body ground	Front door courtesy light switch (for LH) input	Front door LH open	Below 1 V
F15-6 (FLCY) - Body ground	R - Body ground	Front door courtesy light switch (for LH) input	Front door LH closed	Pulse generation
F15-27 (FRCY) - Body ground	BR - Body ground	Front door courtesy light switch (for RH) input	Front door RH open	Below 1 V
F15-27 (FRCY) - Body ground	BR - Body ground	Front door courtesy light switch (for RH) input	Front door RH closed	Pulse generation
3H-24 (LCTY) - Body ground	BR - Body ground	Rear door courtesy light switch (for LH) input	Rear door LH open	Below 1 V
3H-24 (LCTY) - Body ground	BR - Body ground	Rear door courtesy light switch (for LH) input	Rear door LH closed	Pulse generation
3A-31 (RCTY) - Body ground	BR - Body ground	Rear door courtesy light switch (for RH) input	Rear door RH open	Below 1 V
3A-31 (RCTY) - Body ground	BR - Body ground	Rear door courtesy light switch (for RH) input	Rear door RH closed	Pulse generation
3H-34 (BCTY) - Body ground	SB - Body ground	Back door courtesy light switch input	Back door open	Below 1 V
3H-34 (BCTY) - Body ground	SB - Body ground	Back door courtesy light switch input	Back door closed	Pulse generation
3H-20 (TR+) - Body ground	Y - Body ground	Back door lock motor drive output	Back door closed → open	Below 1 V → 11 to 14 V → Below 1 V
3H-8 (ACT-) - Body ground	LA-B - Body ground	Door lock motor unlock drive output	Door control switch or driver door key cylinder off → on (unlock)	Below 1 V → 11 to 14 V → Below 1 V
3H-9 (ACT-) - Body ground	B - Body ground	Door lock motor unlock drive output	Door control switch or driver door key cylinder off → on (unlock)	Below 1 V → 11 to 14 V → Below 1 V
3H-18 (ACT+) - Body ground	R - Body ground	Door lock motor lock drive output	Door control switch or driver door key cylinder off → on (lock)	Below 1 V → 11 to 14 V → Below 1 V
3H-6 (ACT+) - Body ground	R - Body ground	Door lock motor lock drive output	Door control switch or driver door key cylinder off → on (lock)	Below 1 V → 11 to 14 V → Below 1 V
3D-4 (ACTD) - Body ground	B - Body ground	Door lock motor unlock drive output	Door control switch or driver door key cylinder off → on (unlock)	Below 1 V → 11 to 14 V → Below 1 V
3F-29 (BZR) - Body ground	L - Body ground	Wireless door lock buzzer signal	Wireless door lock buzzer off	Below 1 V
3F-29 (BZR) - Body ground	L - Body ground	Wireless door lock buzzer signal	Wireless door lock buzzer on	Pulse generation

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

(a) Disconnect the F1 certification ECU (smart key ECU assembly) connector.

(b) Measure the voltage and resistance according to the value(s) in the table below.

Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
F1-4 (+B) - Body ground	L - Body ground	Battery power supply	Always	11 to 14 V
F1-18 (E) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

(d) 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
M67-18 (RCO) - F1-18 (E)	LG - W-B	Output to electrical key and TPMS receiver assembly (Power supply for electrical key and TPMS receiver assembly. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.)	Procedure: Turn engine switch off Bring electrical key transmitter sub-assembly outside detection area but within wireless function operational area Press lock or unlock switch of electrical key transmitter sub-assembly	Below 1 V → 4.5 to 5.5 V
M67-20 (CSEL) - F1-18 (E)	V - W-B	Communication channel switching circuit	Procedure: Turn engine switch off Close all doors	No pulse generation → Pulse generation
M67-19 (RDAM) - F1-18 (E)	GR - W-B	Electrical key and TPMS receiver assembly communication circuit	Procedure: Turn engine switch off All doors locked Bring electrical key transmitter sub-assembly outside detection area but within wireless function operational area Press lock or unlock switch of electrical key transmitter sub-assembly	11 to 14 pulse generation at regular intervals → Pulse generation

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

M67-18 (RCO) - F1-18 (E)

LG - W-B

Output to electrical key and TPMS receiver assembly

(Power supply for electrical key and TPMS receiver assembly. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.)

Procedure:

Turn engine switch off
Bring electrical key transmitter sub-assembly outside detection area but within wireless function operational area
Press lock or unlock switch of electrical key transmitter sub-assembly

Below 1 V → 4.5 to 5.5 V

M67-20 (CSEL) - F1-18 (E)

V - W-B

Communication channel switching circuit

Procedure:

Turn engine switch off
Close all doors

No pulse generation → Pulse generation

M67-19 (RDAM) - F1-18 (E)

GR - W-B

Electrical key and TPMS receiver assembly communication circuit

Procedure:

Turn engine switch off
All doors locked
Bring electrical key transmitter sub-assembly outside detection area but within wireless function operational area
Press lock or unlock switch of electrical key transmitter sub-assembly

11 to 14 pulse generation at regular intervals → Pulse generation

Diagnosis System

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Toyota CH-R Service Manual: Terminals Of Ecu

Diagnosis System

Dtc Check / Clear

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