| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001HO5G |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [02/2019 - 08/2020] |
| Title: DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Key System): No Answer-Back; 2019 - 2020 MY RAV4 RAV4 HV [02/2019 - 08/2020] | ||
|
No Answer-Back |
DESCRIPTION
In some cases, wireless door lock control functions are normal but the hazard warning light answer-back function does not operate. In such cases, hazard warning light signal output from the main body ECU (multiplex network body ECU) may be malfunctioning.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
The wireless door lock control system uses the CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the wireless door lock control system after confirming that the communication system is functioning properly.
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![2019 - 2024 MY RAV4 RAV4 HV [02/2019 - ]; DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM (w/o Smart Key System): HOW TO PROCEED WITH TROUBLESHOOTING](/t3Portal/stylegraphics/info.gif)
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The vehicle auxiliary battery supplies power to the main body ECU (multiplex network body ECU) via the door control battery. Therefore, before performing this troubleshooting procedure, make sure to perform an on-vehicle inspection to confirm that the main body ECU (multiplex network body ECU) power source circuit is normal.
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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: Customize Setting / Wireless Door Lock.
(e) Select the setting by referring to the table below.
Wireless Door Lock
|
Tester Display |
Description |
Default |
Setting |
ECU |
|---|---|---|---|---|
|
Hazard Answer Back |
Function that flashes the hazard warning lights once when the doors are locked by wireless operation and twice when the doors are unlocked by wireless operation |
ON |
0:OFF,1:ON |
Main body ECU (Multiplex network body ECU) |
|
Wireless Buzzer Resp |
Wireless door lock buzzer response* |
ON |
0:OFF,1:ON |
Main body ECU (Multiplex network body ECU) |
|
Wireless Buzzer Volume |
Wireless door lock buzzer volume* |
Level5 |
0000:Level7,0001:Level6,0010:Level5,0011:Level4,0100:Level3,0101:Level2,0110:Level1,0111:Level0 |
Main body ECU (Multiplex network body ECU) |
- *: w/ Wireless Door Lock Buzzer Answer-back Function
| Customize setting is OFF |
|
|
|
2. |
CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS |
(a) Check the wireless door lock control function using the door control transmitter module set sub-assembly.
| Wireless door lock/unlock does not operate properly |
|
|
|
3. |
CHECK WIRELESS ANSWER-BACK OPERATION |
(a) Check the wireless answer-back operation using the electrical key transmitter sub-assembly.
Click here
|
Result |
Proceed to |
|---|---|
|
Only wireless door lock buzzer answer-back does not occur. |
A |
|
Only hazard warning light answer-back does not occur. |
B |
| B |
|
|
|
4. |
PERFORM ACTIVE TEST USING TECHSTREAM (Wireless Buzzer) |
(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 / Active Test.
(e) Perform Active Test according to the display on the Techstream.
Body Electrical > Main Body > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Wireless Buzzer |
Wireless door lock buzzer |
OFF/ON |
- |
Body Electrical > Main Body > Active Test
|
Tester Display |
|---|
|
Wireless Buzzer |
|
Result |
Proceed to |
|---|---|
|
Wireless buzzer does not sound |
A |
|
Wireless buzzer sounds |
B |
| B |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
|
|
5. |
CHECK MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) |
(a) Disconnect the A18 wireless door lock buzzer connector.
(b) Perform the Active Test using the Techstream and sound the wireless door lock buzzer.
Body Electrical > Main Body > Active Test
|
Tester Display |
Measurement Item |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Wireless Buzzer |
Wireless door lock buzzer |
OFF/ON |
- |
Body Electrical > Main Body > Active Test
|
Tester Display |
|---|
|
Wireless Buzzer |
(c) While performing the Active Test, measure the voltage between the terminals of the wireless door lock buzzer.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A18-1 (B) - A18-2 (E) |
Active Test Wireless Buzzer ON |
Pulse generation (frequency: 2 kHz, high voltage: 11 to 14 V, low voltage: below 1 V) |
|
Active Test Wireless Buzzer OFF |
Below 1 V |
| OK |
|
|
|
6. |
CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) AND BODY GROUND) |
(a) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
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(b) Disconnect the A18 wireless door lock buzzer connector.
(c) Reconnect the 4F instrument panel junction block assembly connector.
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A18-1 (B) - A-21 (BZR) |
Always |
Below 1 Ω |
|
A18-2 (E) - Body ground |
Always |
Below 1 Ω |
|
A18-1 (B) or A-21 (BZR) - Other terminals and body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
|
|
7. |
CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 4F instrument panel junction block assembly connector.
(b) Disconnect the A18 wireless door lock buzzer connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A18-1 (B) - 4F-29 |
Always |
Below 1 Ω |
|
A18-1 (B) or 4F-29 - Other terminals and body ground |
Always |
10 kΩ or higher |
| OK |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
8. |
READ VALUE USING TECHSTREAM (FR Door Lock Pos, FL Door Lock Pos, RL-Door Lock Pos SW) |
(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 |
- |
|
RL-Door Lock Pos SW |
Rear door RH and LH unlock detection switch signal |
OFF or ON |
OFF: Rear door RH and LH locked ON: Rear door RH or LH unlocked |
- |
Body Electrical > Main Body > Data List
|
Tester Display |
|---|
|
FR Door Lock Pos |
|
FL Door Lock Pos |
|
RL-Door Lock Pos SW |
OK:
The Techstream display changes correctly in response to the lock/unlock operation.
| NG |
|
GO TO LIGHTING SYSTEM (Proceed to Door Unlock Detection Switch Circuit) |
|
|
9. |
CHECK HAZARD WARNING LIGHTS OPERATION |
(a) Check that the hazard warning lights blink when the hazard warning signal switch is pressed.
OK:
Hazard warning lights blink.
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
GO TO LIGHTING SYSTEM (Proceed to Hazard Warning Switch Circuit) w/ Headlight ECU: Click here
w/o Headlight ECU: Click here
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