Toyota CH-R Service Manual: Door Unlock Detection Switch Circuit

Toyota CH-R Service Manual / Lighting (int) / Lighting System / Door Unlock Detection Switch Circuit

DESCRIPTION

The main body ECU (multiplex network body ECU) detects the condition of each door unlock detection switch.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the main body ECU (multiplex network body ECU), refer to Registration*1.

Click here

  • *1: w/ Smart Key System

PROCEDURE

1.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Main Body / Data List.

(e) Read the Data List according to the display on the Techstream.

Body Electrical > Main Body > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

FR Door Lock Pos

Front door RH unlock detection switch signal

LOCK or UNLOCK

LOCK: Front door RH locked

UNLOCK: Front door RH unlocked

-

FL Door Lock Pos

Front door LH unlock detection switch signal

LOCK or UNLOCK

LOCK: Front door LH locked

UNLOCK: Front door LH unlocked

-

RR-Door Lock Pos SW

Rear door RH and LH unlock detection switch signal

ON or OFF

ON: Rear door RH or LH unlocked

OFF: Rear door RH and LH locked

-

RL-Door Lock Pos SW

Rear door RH and LH unlock detection switch signal

ON or OFF

ON: Rear door RH or LH unlocked

OFF: Rear door RH and LH locked

-

Body Electrical > Main Body > Data List

Tester Display

FR Door Lock Pos

FL Door Lock Pos

RR-Door Lock Pos SW

RL-Door Lock Pos SW

Result

Proceed to

OK

A

"FL Door Lock Pos" is not normal

B

"FR Door Lock Pos" is not normal

C

Both "RL-Door Lock Pos SW" and "RR-Door Lock Pos SW" are not normal

D

A

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

C

GO TO STEP 5

D

GO TO STEP 8

B

2.

INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH

(a) Remove the front door lock with motor assembly LH.

Click here

(b) Inspect the front door lock with motor assembly LH.

Click here

OK:

Front door lock with motor assembly LH is normal.

NG

REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY LH

OK

3.

CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

(a) Disconnect the 3D instrument panel junction block assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

J4-8 (LSSR) - 3D-13

Always

Below 1 Ω

J4-8 (LSSR) or 3D-13 - Body ground

Always

10 kΩ or higher

J4-7 (E) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

4.

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the instrument panel junction block assembly.

Click here

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

Click here

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

*a

Component without harness connected

(Instrument Panel Junction Block Assembly)

-

-

Standard Resistance:

Tester Connection

Condition

Specified Condition

3D-13 - MB-19 (LSFL)

Always

Below 1 Ω

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

5.

INSPECT FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH

(a) Remove the front door lock with motor assembly RH.

Click here

(b) Inspect the front door lock with motor assembly RH.

Click here

OK:

Front door lock with motor assembly RH is normal.

NG

REPLACE FRONT DOOR LOCK WITH MOTOR ASSEMBLY RH

OK

6.

CHECK HARNESS AND CONNECTOR (FRONT DOOR LOCK ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

(a) Disconnect the 3D instrument panel junction block assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I4-7 (LSSR) - 3D-12

Always

Below 1 Ω

I4-7 (LSSR) or 3D-12 - Body ground

Always

10 kΩ or higher

I4-8 (E) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

7.

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the instrument panel junction block assembly.

Click here

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

Click here

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

*a

Component without harness connected

(Instrument Panel Junction Block Assembly)

-

-

Standard Resistance:

Tester Connection

Condition

Specified Condition

3D-12 - MB-17 (LSFR)

Always

Below 1 Ω

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

8.

INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY LH

(a) Remove the rear door lock with motor assembly LH.

Click here

(b) Inspect the rear door lock with motor assembly LH.

Click here

OK:

Rear door lock with motor assembly LH is normal.

NG

REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY LH

OK

9.

CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK WITH MOTOR ASSEMBLY LH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

(a) Disconnect the 3D instrument panel junction block assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L1-5 (LSSR) - 3D-14

Always

Below 1 Ω

L1-5 (LSSR) or 3D-14 - Body ground

Always

10 kΩ or higher

L1-6 (E) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

10.

INSPECT REAR DOOR LOCK WITH MOTOR ASSEMBLY RH

(a) Remove the rear door lock with motor assembly RH.

Click here

(b) Inspect the rear door lock with motor assembly RH.

Click here

OK:

Rear door lock with motor assembly RH is normal.

NG

REPLACE REAR DOOR LOCK WITH MOTOR ASSEMBLY RH

OK

11.

CHECK HARNESS AND CONNECTOR (REAR DOOR LOCK ASSEMBLY RH - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND BODY GROUND)

(a) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

K1-9 (LSSR) - 3D-14

Always

Below 1 Ω

K1-9 (LSSR) or 3D-14 - Body ground

Always

10 kΩ or higher

K1-10 (E) - Body ground

Always

Below 1 Ω

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

12.

INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

(a) Remove the instrument panel junction block assembly.

Click here

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

Click here

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

*a

Component without harness connected

(Instrument Panel Junction Block Assembly)

-

-

Standard Resistance:

Tester Connection

Condition

Specified Condition

3D-14 - MB-5 (LSR)

Always

Below 1 Ω

OK

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

NG

REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY

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