Key Reminder Warning System Unlock Warning Switch Circuit

Body Electrical. Camry. Acv40 Gsv40
Door Lock. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING INTELLIGENT TESTER

INSPECT UNLOCK WARNING SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - MAIN BODY ECU)

CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - BODY GROUND)

KEY REMINDER WARNING SYSTEM - Unlock Warning Switch Circuit


DESCRIPTION

The unlock warning switch detects if the key is in the ignition key cylinder.
The unlock warning switch turns on when the key is inserted into the ignition key cylinder and turns off when the key is removed from the cylinder.
The main body ECU is connected to the unlock warning switch via terminal KSW and key detection status signals are input to the main body ECU.
The main body ECU applies voltage to the unlock warning switch via terminal KSW. When the unlock warning switch is on (there is continuity between the switch terminals), a signal indicating that the key is in the ignition key cylinder is input to the main body ECU. When the switch is off (there is no continuity between the switch terminals), a signal indicating that the key is not in the cylinder is input.

WIRING DIAGRAM


Camry. Acv40 Gsv40.Door Lock.Power Door Lock Control System.Key Reminder Warning System Unlock Warning Switch Circuit


INSPECTION PROCEDURE

1.READ VALUE USING INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position and turn the intelligent tester main switch on.

  1. Select Key Unlock Warning SW in the DATA LIST and read the value displayed on the tester.

    BODY:
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    Key Unlock Warning SW
    		Unlock warning switch signal
    /ON or OFF
    		ON: Key is in ignition key cylinder
    OFF: No key is in ignition key cylinder
    		-
    OK:
    ON (Key is in ignition key cylinder) appears on the screen.


OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG


2.INSPECT UNLOCK WARNING SWITCH ASSEMBLY


    Camry. Acv40 Gsv40.Door Lock.Power Door Lock Control System.Key Reminder Warning System Unlock Warning Switch Circuit

  1. Remove the unlock warning switch assembly (CAMRY_ACV40 RM0000026TU01BX.html).

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		Switch free (Key removed)
    		10 kΩ or higher
    1 - 2
    		Switch pushed (Key set)
    		Below 1 Ω


NG
REPLACE UNLOCK WARNING SWITCH ASSEMBLY (CAMRY_ACV40 RM0000026TU01BX.html)
OK


3.CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - MAIN BODY ECU)


    Camry. Acv40 Gsv40.Door Lock.Power Door Lock Control System.Key Reminder Warning System Unlock Warning Switch Circuit

  1. Disconnect the E22 switch and E9 ECU connectors.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E22-1 - E9-5 (KSW)
    		Always
    		Below 1 Ω
    E22-1 - Body ground
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SWITCH - BODY GROUND)


    Camry. Acv40 Gsv40.Door Lock.Power Door Lock Control System.Key Reminder Warning System Unlock Warning Switch Circuit

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    E22-2 - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE