Last Modified: 11-20-2023 6.11:8.1.0 Doc ID: RM10000000152ZR
Model Year Start: 2018 Model: Camry HV Prod Date Range: [07/2017 - 09/2019]
Title: VEHICLE PROXIMITY NOTIFICATION SYSTEM: VEHICLE PROXIMITY NOTIFICATION SYSTEM (w/o Rear Vehicle Approaching Speaker): There is No Sound Made; 2018 - 2019 MY Camry HV [07/2017 - 09/2019]

There is No Sound Made

DESCRIPTION

The vehicle approaching speaker controller receives stop light switch signals from the stop light switch assembly, vehicle speed signals from the combination meter assembly and permission signals from the hybrid vehicle control ECU assembly, and produces the warning sound from the vehicle approaching speaker assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • Before replacing the hybrid vehicle control ECU assembly, refer to Registration.

    Click here 2018 - 2019 MY Camry HV [07/2017 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function): REGISTRATION

  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.

CHECK FOR DTC

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Trouble Codes.

Body Electrical > Vehicle Proximity Notification System > Trouble Codes

(e) Check for DTCs.

Result

Proceed to

DTC B1350 is not output

A

DTC B1350 is output

B

Communication with the Techstream is not possible

C
B

GO TO DTC CHART B1350

C

GO TO OTHER DIAGNOSIS PROCEDURE (Communication between Vehicle Proximity Notification System and Diagnostic Tool is not Possible)

A

2.

PERFORM ACTIVE TEST USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Active Test.

(e) Perform the Active Test according to the display on the Techstream.

Body Electrical > Vehicle Proximity Notification System > Active Test

Tester Display

Measurement Item

Control Range

Diagnostic Note

Proximity Sound (Vehicle Stationary)

Proximity sound (Vehicle stationary)

OFF or ON

Produces warning sound when vehicle is stopped

Body Electrical > Vehicle Proximity Notification System > Active Test

Tester Display

Proximity Sound (Vehicle Stationary)

Result

Proceed to

The warning sound is produced

A

The warning sound is not produced

B
B

GO TO STEP 13

A

3.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Data List.

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

Body Electrical > Vehicle Proximity Notification System > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Stop Light SW

Stop light switch signal

OFF or ON

OFF: Brake pedal released

ON: Brake pedal depressed

-

Body Electrical > Vehicle Proximity Notification System > Data List

Tester Display

Stop Light SW

Result

Proceed to

The Techstream display changes according to brake pedal operation

A

The Techstream display does not change according to brake pedal operation

B
B

GO TO STEP 11

A

4.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Data List.

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

Body Electrical > Vehicle Proximity Notification System > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Vehicle Speed

Vehicle speed

Min.: 0 km/h (0 mph), Max.: 255 km/h (158 mph)

Almost the same as actual vehicle speed

-

Body Electrical > Vehicle Proximity Notification System > Data List

Tester Display

Vehicle Speed

Result

Proceed to

The Techstream display changes according to the vehicle speed

A

The Techstream display does not change according to the vehicle speed

B
B

GO TO STEP 9

A

5.

READ VALUE USING TECHSTREAM

(a) Connect the Techstream to the DLC3.

(b) Turn the power switch on (IG).

(c) Turn the Techstream on.

(d) Enter the following menus: Body Electrical / Vehicle Proximity Notification System / Data List.

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

Body Electrical > Vehicle Proximity Notification System > Data List

Tester Display

Measurement Item

Range

Normal Condition

Diagnostic Note

Permission Signal

Vehicle proximity notification system permission signal

OFF or ON

OFF: Vehicle proximity notification system operation prohibited (engine is operating or shift lever is in P).

ON: Vehicle proximity notification system operation permitted (engine is stopped and shift lever is not in P).

-

Body Electrical > Vehicle Proximity Notification System > Data List

Tester Display

Permission Signal

Result

Proceed to

The Techstream display changes according to the engine status or the shift lever position

A

The Techstream display does not change according to the engine status or the shift lever position

B
A

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

B

6.

CHECK VEHICLE APPROACHING SPEAKER CONTROLLER (PERMISSION SIGNAL)

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

K57-11 (KOK) - Body ground

Power switch on (READY), shift lever in P

Below 2.3 V

Power switch on (READY), engine stopped and shift lever not in P

8 V or higher

*a

Component with harness connected

(Vehicle Approaching Speaker Controller)
OK

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

NG

7.

CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - HYBRID VEHICLE CONTROL ECU ASSEMBLY)

(a) Disconnect the K57 vehicle approaching speaker controller connector.

(b) Disconnect the K69 hybrid vehicle control ECU assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K57-11 (KOK) - K69-7 (KOK)

Always

Below 1 Ω

K57-11 (KOK) or K69-7 (KOK) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

8.

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

(a) Replace the vehicle approaching speaker controller with a new or known good one.

Click here 2018 - 2019 MY Camry HV [07/2017 - 09/2019]; VEHICLE PROXIMITY NOTIFICATION SYSTEM: VEHICLE APPROACHING SPEAKER ECU: REMOVAL

OK:

The operation of the vehicle proximity notification system returns to normal.

OK

END (VEHICLE APPROACHING SPEAKER CONTROLLER WAS DEFECTIVE)
NG

REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY

9.

CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - VEHICLE APPROACHING SPEAKER CONTROLLER)

(a) Disconnect the K21 combination meter assembly connector.

(b) Disconnect the K57 vehicle approaching speaker controller connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K21-6 (+S) - K57-6 (SPD)

Always

Below 1 Ω

K21-6 (+S) or K57-6 (SPD) - Body ground

Always

10 kΩ or higher
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

10.

CHECK COMBINATION METER ASSEMBLY

*a

Component with harness connected

(Combination Meter Assembly)

(a) Connect the K21 combination meter assembly connector.

(b) Connect the K57 vehicle approaching speaker controller connector.

(c) Check the input waveform.

(1) Remove the combination meter assembly with the connector(s) still connected.

(2) Connect an oscilloscope to terminal K21-6 (+S) and body ground.

(3) Turn the power switch on (IG).

(4) Turn a wheel slowly.

(5) Check the signal waveform according to the condition(s) in the table below.

Item

Condition

Tool Setting

5 V/DIV., 20 ms./DIV.

Vehicle Condition

Power switch on (IG), wheel being rotated

OK:

The waveform is similar to that shown in the illustration.

HINT:

When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

OK

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

NG

GO TO METER / GAUGE SYSTEM

11.

CHECK STOP LIGHT OPERATION

(a) Check that the stop lights come on when the brake pedal is depressed, and go off when the brake pedal is released.

OK:

Condition

Illumination Condition

Brake pedal depressed

On

Brake pedal released

Off
NG

GO TO LIGHTING SYSTEM

w/ AFS: Click here 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; LIGHTING (EXT): LIGHTING SYSTEM (w/ AFS): HOW TO PROCEED WITH TROUBLESHOOTING

w/o AFS: Click here 2018 - 2020 MY Camry HV [07/2017 - 10/2020]; LIGHTING (EXT): LIGHTING SYSTEM (w/o AFS): HOW TO PROCEED WITH TROUBLESHOOTING

OK

12.

CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER CONTROLLER - STOP LIGHT SWITCH ASSEMBLY)

(a) Disconnect the K57 vehicle approaching speaker controller connector.

(b) Disconnect the A37 stop light switch assembly connector.

(c) Disconnect each ECU and stop light connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

K57-2 (STP) - A37-3 (L)

Always

Below 1 Ω

K57-2 (STP) or A37-3 (L) - Body ground

Always

10 kΩ or higher
OK

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.

INSPECT VEHICLE APPROACHING SPEAKER ASSEMBLY

(a) Remove the vehicle approaching speaker assembly.

Click here 2018 - 2019 MY Camry HV [07/2017 - 09/2019]; VEHICLE PROXIMITY NOTIFICATION SYSTEM: VEHICLE APPROACHING SPEAKER (for Front Side): REMOVAL

(b) Inspect the vehicle approaching speaker assembly.

Click here 2018 - 2019 MY Camry HV [07/2017 - 09/2019]; VEHICLE PROXIMITY NOTIFICATION SYSTEM: VEHICLE APPROACHING SPEAKER (for Front Side): INSPECTION

NG

REPLACE VEHICLE APPROACHING SPEAKER ASSEMBLY

OK

14.

CHECK HARNESS AND CONNECTOR (VEHICLE APPROACHING SPEAKER ASSEMBLY - VEHICLE APPROACHING SPEAKER CONTROLLER)

(a) Disconnect the K57 vehicle approaching speaker controller connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

A7-1 (+) - K57-3 (SP+)

Always

Below 1 Ω

A7-2 (-) - K57-8 (SP-)

Always

Below 1 Ω

A7-1 (+) or K57-3 (SP+) - Body ground

Always

10 kΩ or higher

A7-2 (-) or K57-8 (SP-) - Body ground

Always

10 kΩ or higher
OK

REPLACE VEHICLE APPROACHING SPEAKER CONTROLLER

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR