Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM1000000012SU0
Model Year Start: 2018 Model: Camry Prod Date Range: [03/2017 - 08/2021]
Title: POWER OUTLETS (INT): WIRELESS CHARGING SYSTEM: Status Signal Circuit; 2018 - 2021 MY Camry [03/2017 - 08/2021]

Status Signal Circuit

DESCRIPTION

This circuit sends a charging suspension signal from the certification ECU (smart key ECU assembly) to the mobile wireless charger cradle assembly (front console box insert sub-assembly). Based on this signal, the mobile wireless charger cradle assembly (front console box insert sub-assembly) suspends or resumes wireless charging.

HINT:

The wireless charging system uses the same radio wave frequency that is used to perform verification of the electrical key transmitter sub-assembly. Therefore, when the electrical key transmitter sub-assembly verification is being performed, the certification ECU (smart key ECU assembly) sends a charging suspension signal to the wireless charging system to suspend charging.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Before replacing the certification ECU (smart key ECU assembly), refer to Registration.

Click here 2018 - 2019 MY Camry [03/2017 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION 2020 - 2022 MY Camry [09/2019 - 08/2022]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION

PROCEDURE

1.

CHECK MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (FRONT CONSOLE BOX INSERT SUB-ASSEMBLY) (DIS TERMINAL)

*a

Component with harness connected

(Mobile Wireless Charger Cradle Assembly (Front Console Box Insert Sub-assembly))

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

k1-7 (DIS) - Body ground

For 5 seconds after turning engine switch from off to on (ACC)*1

4.5 to 6.0 V

Device being charged

Below 1 V

Charging suspended due to smart entry and start system status*2

4.5 to 6.0 V
  • *1: When the engine switch is turned from off to on (ACC), the mobile wireless charger cradle assembly (front console box insert sub-assembly) monitors the charging suspension signal for 5 seconds. If the charging suspension signal is not 4 V or more for 0.8 seconds or more during monitoring, the mobile wireless charger cradle assembly (front console box insert sub-assembly) determines that there is an open in the charging suspension signal line, blinks (pattern 1) the indicator light (amber), and prohibits operation until the engine switch is turned from off to on (ACC) again.
  • *2: For details about conditions when the certification ECU (smart key ECU assembly) sends the charging suspension signal, refer to System Description.

    Click here 2018 - 2021 MY Camry [03/2017 - 08/2021]; POWER OUTLETS (INT): WIRELESS CHARGING SYSTEM: SYSTEM DESCRIPTION

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) - MOBILE WIRELESS CHARGER CRADLE ASSEMBLY (FRONT CONSOLE BOX INSERT SUB-ASSEMBLY))

(a) Disconnect the R8 certification ECU (smart key ECU assembly) connector.

(b) Disconnect the k1 mobile wireless charger cradle assembly (front console box insert sub-assembly) connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

R8-7 (WCSW) - k1-7 (DIS)

Always

Below 1 Ω

R8-7 (WCSW) or k1-7 (DIS) - Body ground

Always

10 kΩ or higher
OK

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 2018 MY Camry [03/2017 - 06/2017]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2018 - 2020 MY Camry [06/2017 - 10/2020]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL 2021 - 2024 MY Camry [10/2020 -        ]; THEFT DETERRENT / KEYLESS ENTRY: CERTIFICATION ECU: REMOVAL

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR