Toyota CH-R Service Manual: 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.

Click here

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

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

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

Ignition switch ACC

11 to 14 V

MB-30 (ACC) - Body ground

-

ACC power supply

Ignition 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

Ignition switch ON

11 to 14 V

MB-32 (IG) - Body ground

-

IG power supply

Ignition switch off

Below 1 V

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

Click here

(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

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-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-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

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

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

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

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-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

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

3A-39 (UL1) - Body ground

SB - Body ground

Door control switch input

Door control switch locked

Below 1 V

3A-39 (UL1) - Body ground

SB - Body ground

Door control switch input

Door control switch off

Pulse generation

3D-16 (L1) - Body ground

B - Body ground

Door control switch input

Door control switch unlocked

Below 1 V

3D-16 (L1) - Body ground

B - Body ground

Door control switch input

Door control switch off

Pulse generation

F15-18 (BDSU) - Body ground*1

LG - Body ground

Back door opener switch input

Back door opener switch pushed

Below 1 V

F15-18 (BDSU) - Body ground*1

LG - Body ground

Back door opener switch input

Back door opener switch not pushed

Pulse generation

*1: w/o Smart Key System

CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) (w/ Smart Key System)

(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

(c) Reconnect the M67 certification ECU (smart key ECU assembly) connector.

(d) Check for pulses according to the value(s) in the table below.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

M67-26 (TSW5) - Body ground

LG - Body ground

Back door opener switch input

Back door opener switch assembly (open switch) off → on

Below 1 V → Pulse generation

CHECK DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY (w/o Toyota Safety Sense P)

(a) Disconnect the F14 double lock door control relay 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

F14-12 (+B) - Body ground

BE - Body ground

Battery power supply

Ignition switch off

11 to 14 V

F14-11 (CPUB) - Body ground

SB - Body ground

Battery power supply

Ignition switch off

11 to 14 V

F14-7 (GND) - Body ground

LA - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the F14 double lock door control relay assembly connector.

(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

F14-8 (ACTS) - Body ground

LG - Body ground

All door double lock motor set on output

Double lock unset

Below 1 V

F14-8 (ACTS) - Body ground

LG - Body ground

All door double lock motor set on output

Double lock set

11 to 14 V

F14-1 (ACTR) - Body ground

GR - Body ground

All door double lock motor set off output

Double lock set

Below 1 V

F14-1 (ACTR) - Body ground

GR - Body ground

All door double lock motor set off output

Double lock unset

11 to 14 V

F14-6 (DLPD) - Body ground

Y - Body ground

Front RH double lock position switch input

Double lock unset

Pulse generation

F14-6 (DLPD) - Body ground

Y - Body ground

Front RH double lock position switch input

Double lock set

Below 1 V

F14-5 (DLPP) - Body ground

V - Body ground

Front LH double lock position switch input

Double lock unset

Pulse generation

F14-5 (DLPP) - Body ground

V - Body ground

Front LH double lock position switch input

Double lock set

Below 1 V

F14-4 (DLPR) - Body ground

B - Body ground

Rear RH double lock position switch input

Double lock unset

Pulse generation

F14-4 (DLPR) - Body ground

B - Body ground

Rear RH double lock position switch input

Double lock set

Below 1 V

F14-3 (DLPL) - Body ground

L - Body ground

Rear LH double lock position switch input

Double lock unset

Pulse generation

F14-3 (DLPL) - Body ground

L - Body ground

Rear LH double lock position switch input

Double lock set

Below 1 V

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