Door Unlock Detection Switch Circuit - CapHector

CIRCUIT DESCRIPTION. The door unlock detection switch is built in the door lock motor assembly. This switch is ON when the door lock knob is in the unlock ...
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DI-439 DIAGNOSTICS

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THEFT DETERRENT SYSTEM DI029-15

Door Unlock Detection Switch Circuit CIRCUIT DESCRIPTION The door unlock detection switch is built in the door lock motor assembly. This switch is ON when the door lock knob is in the unlock position and OFF when the lock knob is in the lock position. The ECU detects the door lock knob conditions from this circuit. It is used as one of the operating conditions for the key confinement prevention function.

WIRING DIAGRAM

L-R (*1) L-B (*2)

J8 J/C

11 IA1 11 IF1

L-R

L-R

D17 (*2) D15 (*1) Door Unlock Detection Switch Front LH

4

3

W-B

14 IA1

4

W-B 14 IF1

W-B

A

D18 (*2) D16 (*1) Door Unlock Detection Switch Front RH

3

BA2

J4 J/C

GR A (*3)

A GR (*3) A GR (*3)

D11 7 BB2 Door Unlock Detection Switch GR Rear LH

4 IB1 1

W-B (*3) 8 BA2

LSWP LSWR

D12 Door Unlock Detection Switch Rear RH

(*3) 2 W-B (*3)

3

GR (*3)

LSWD

8 BB2

W-B

A

J5 J/C ID

14 T5 15 T5 16 T5

L-B

A

L-B 7

GR (*3) 4

A

Theft Deterrent ECU

J9 J/C IF

W-B (*3) W-B (*3) W-B BG

*1: w/ Door Lock Control *2: w/o Door Lock Control *3: 4-Door

I22568

2002 ECHO (RM884U)

Author:

Date:

609

DI-440 DIAGNOSTICS

-

THEFT DETERRENT SYSTEM

INSPECTION PROCEDURE 1

Check Door Unlock Detection Switch. PREPARATION: (a) Remove the door trim and service hole cover. (b) Disconnect the door unlock detection switch connector. CHECK: Check continuity between terminals 3 and 4 of door unlock detection switch connector, when the door lock knob is operated to the lock side and unlock side. OK:

Disconnect

I14917

Switch Condition

Tester connection

Specified condition

Door unlock

3-4

Continuity

Door lock

-

No continuity

NG

Replace door unlock detection switch.

OK

2

Check harness and connectors between ECU and door unlock detection switch, door unlock detection switch and body ground (See page IN-29 ).

NG

Repair or replace harness or connector.

OK

Proceed to next circuit inspection shown in problem symptoms table (See page DI-412 ).

2002 ECHO (RM884U)

Author:

Date:

610