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

1 Connector Type

-

-

*A

2 Connector Type

-

-

(a) Disconnect the MB main body ECU (multiplex network body ECU) connector.

Click here

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

HINT:

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

-

Battery power supply

Always

11 to 14 V

MB-30 (ACC) - Body ground

-

ACC power supply

Ignition switch ACC

11 to 14 V

Ignition switch off

Below 1 V

MB-32 (IG) - Body ground

-

IG power supply

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

(c) Reconnect the MB main body ECU (multiplex network body ECU) connector.

Click here

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

3H-25 (LIN2) - Body ground

LG - Body ground

LIN communication line

Ignition switch ON

Pulse generation

3D-17 (LIN2) - Body ground*1

P - Body ground

LIN communication line

Ignition switch ON

Pulse generation

  • *1: w/ Double Locking System

CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Driver Door)

(a) Disconnect the J2 power window regulator motor assembly (for driver door) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

J2-2 (B) - Body ground

L - Body ground

Battery power supply

Always

11 to 14 V

J2-1 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the J2 power window regulator motor assembly (for driver door) connector.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

J2-9 (LIN) - Body ground

R - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Front Passenger Door)

(a) Disconnect the I2 power window regulator motor assembly (for front passenger door) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

I2-2 (B) - Body ground

L - Body ground

Battery power supply

Always

11 to 14 V

I2-1 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the I2 power window regulator motor assembly (for front passenger door) connector.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

I2-9 (LIN) - Body ground

P - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear RH Door)

(a) Disconnect the K2 power window regulator motor assembly (for rear RH door) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K2-2 (B) - Body ground

R - Body ground

Battery power supply

Always

11 to 14 V

K2-1 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the K2 power window regulator motor assembly (for rear RH door) connector.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

K2-9 (LIN) - Body ground

LG - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK POWER WINDOW REGULATOR MOTOR ASSEMBLY (for Rear LH Door)

(a) Disconnect the L2 power window regulator motor assembly (for rear LH door) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

L2-2 (B) - Body ground

R - Body ground

Battery power supply

Always

11 to 14 V

L2-1 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the L2 power window regulator motor assembly (for rear LH door) connector.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

L2-9 (LIN) - Body ground

LG - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK MULTIPLEX NETWORK MASTER SWITCH ASSEMBLY

(a) Disconnect the J6 multiplex network master switch assembly connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

J6-11 (B) - Body ground

B - Body ground

Battery power supply

Always

11 to 14 V

J6-12 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

(c) Reconnect the J6 multiplex network master switch 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

J6-17 (LIN1) - Body ground

P - Body ground

LIN communication line

Ignition switch ON

Pulse generation

J6-16 (LIN2) - Body ground

R - Body ground

LIN communication line

Ignition switch ON

Pulse generation

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.

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F1-18 (E) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

F1-4 (+B) - Body ground

L - Body ground

+B power supply

Always

11 to 14 V

(c) Reconnect the F1 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

F1-13 (LIN) - Body ground

B - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR OR UPPER BRACKET ASSEMBLY) (w/ Smart Key System)

(a) Disconnect the F78 steering lock ECU (steering lock actuator or upper bracket assembly) connector.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F78-1 (GND) - Body ground

W-B Body ground

Ground

Always

Below 1 Ω

F78-7 (B) - Body ground

L - Body ground

Battery power supply

Always

11 to 14 V

(c) Reconnect the F78 steering lock ECU (steering lock actuator or upper bracket 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

F78-5 (LIN) - Body ground

V - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK ID CODE BOX (IMMOBILISER CODE ECU) (w/ Smart Key System)

(a) Disconnect the F21 ID code box (immobiliser code ECU) connector.

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

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F21-5 (GND) - Body ground

W-B - Body ground

Ground

Always

Below 1 Ω

F21-1 (+B) - Body ground

W - Body ground

+B power supply

Always

11 to 14 V

(c) Reconnect the F21 ID code box (immobiliser code ECU) connector.

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F21-2 (LIN1) - Body ground

B - Body ground

LIN communication line

Ignition switch ON

Pulse generation

CHECK DOUBLE LOCK DOOR CONTROL RELAY ASSEMBLY (w/ Double Locking System)

(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.

HINT:

Measure the values on the wire harness side with the connector disconnected.

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F14-12 (+B) - Body ground

BE - Body ground

Battery power supply

Always

11 to 14 V

F14-11 (CPUB) - Body ground

SB - Body ground

Battery power supply

Always

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

Terminal No. (Symbol)

Wiring Color

Terminal Description

Condition

Specified Condition

F14-9 (LIN) - Body ground

P - Body ground

LIN communication line

Double lock unset

Pulse generation

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