| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001G14X |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 12/2021] |
| Title: DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM (for Gasoline Model, with Smart Key System): No Answer-Back; 2019 - 2021 MY RAV4 [11/2018 - 12/2021] | ||
|
No Answer-Back |
DESCRIPTION
In some cases, wireless door lock control functions are normal but the hazard warning light and/or wireless door lock buzzer answer-back function does not operate. In such cases, hazard warning light and wireless door lock buzzer signal output from the main body ECU (multiplex network body ECU) may be malfunctioning.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
-
Before performing the inspection, check that DTC B1242 (wireless door lock control) is not output.
Click here
![2019 - 2024 MY RAV4 [11/2018 - ]; DOOR LOCK: WIRELESS DOOR LOCK CONTROL SYSTEM (for Gasoline Model, with Smart Key System): DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
-
If the main body ECU (multiplex network body ECU) is replaced, refer to the Smart Key System (for start function).
Click here
PROCEDURE
|
1. |
CHECK CUSTOMIZE SETTING |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(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 |
When the doors are locked by wireless operation, the hazard warning lights flash once. When the doors are unlocked by wireless operation, the hazard warning lights flash twice. |
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 Vol |
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) |
|
Result |
Proceed to |
|---|---|
|
Both items are ON and except Level 0 |
A |
|
Either item is OFF or Level 0 |
B |
| B |
|
PERFORM CUSTOMIZE FUNCTION
|
|
|
2. |
CHECK WIRELESS DOOR LOCK CONTROL FUNCTIONS |
(a) Check the wireless door lock control function using the electrical key transmitter sub-assembly.
Click here
|
Result |
Proceed to |
|---|---|
|
Wireless door lock/unlock operates properly. |
A |
|
Wireless door lock/unlock does not operate properly. |
B |
| B |
|
|
|
3. |
READ VALUE USING TECHSTREAM (FR Door Lock Pos, FL Door Lock Pos, RR Door Lock Pos, RL Door Lock Pos) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(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 |
- |
|
RR-Door Lock Pos SW |
Rear door RH unlock detection switch signal*1 |
OFF or ON |
OFF: Rear door RH locked ON: Rear door RH unlocked |
- |
|
RL-Door Lock Pos SW |
Rear door LH unlock detection switch signal*1 Rear door RH and LH unlock detection switch signal*2 |
OFF or ON |
OFF: Rear door LH locked*1 OFF: Rear door RH and LH locked*2 ON: Rear door LH unlocked*1 ON: Rear door RH or LH unlocked*2 |
- |
- *1: w/ Memory Call Function
- *2: w/o Memory Call Function
Body Electrical > Main Body > Data List
|
Tester Display |
|---|
|
FR Door Lock Pos |
|
FL Door Lock Pos |
|
RR-Door Lock Pos SW |
|
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) |
|
|
4. |
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 |
|
|
|
5. |
PERFORM ACTIVE TEST USING TECHSTREAM (Wireless Buzzer) |
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(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)
|
|
|
6. |
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 |
|
REPLACE WIRELESS DOOR LOCK BUZZER
|
|
|
7. |
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.
Click here
(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)
|
|
|
8. |
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 |
|
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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