| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001FWRJ |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - ] |
| Title: LIGHTING (INT): LIGHTING SYSTEM: IG Signal Circuit; 2019 - 2024 MY RAV4 RAV4 HV [11/2018 - ] | ||
|
IG Signal Circuit |
DESCRIPTION
This circuit detects the ignition switch ON or off condition, and sends it to the main body ECU (multiplex network body ECU).
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
-
w/ Smart Key System:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.
PROCEDURE
|
1. |
CHECK VEHICLE TYPE |
(a) Check vehicle type.
|
Result |
Proceed to |
|---|---|
|
w/ Smart Key System |
A |
|
w/o Smart Key System |
B |
| B |
|
|
|
2. |
CHECK FOR DTC (SMART KEY SYSTEM [for Start Function]) |
(a) Check for DTCs.
-
for HV Model:
Click here
![2019 - 2021 MY RAV4 HV [11/2018 - 12/2021]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
-
for Gasoline Model:
Click here
Body Electrical > Power Source Control > Trouble Codes
OK:
Smart key system (for Start Function) DTCs are not output.
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (for HV Model) |
B |
|
NG (for Gasoline Model) |
C |
| B |
|
GO TO SMART KEY SYSTEM (for Start Function, HV Model)
|
| C |
|
GO TO SMART KEY SYSTEM (for Start Function, Gasoline Model)
|
|
|
3. |
READ VALUE USING TECHSTREAM |
(a) Read the Data List according to the display on the Techstream.
Click here
Body Electrical > Main Body > Data List
|
Tester Display |
Measurement Item |
Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|---|
|
IG SW |
Ignition switch ON signal |
OFF or ON |
OFF: Ignition switch off ON: Ignition switch ON |
"OFF" is also displayed for this item when the ignition switch is ACC. |
Body Electrical > Main Body > Data List
|
Tester Display |
|---|
|
IG SW |
OK:
Normal conditions listed above are displayed.
| OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
|
|
4. |
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BATTERY AND BODY GROUND) |
(a) Disconnect the instrument panel junction block assembly connectors.
|
*a |
Front view of wire harness connector (to Instrument Panel Junction Block Assembly) |
- |
- |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
4K-1 - Body ground |
Ignition switch off |
11 to 14 V |
|
4A-17 - Body ground |
Ignition switch ON |
11 to 14 V |
|
Ignition switch off |
Below 1 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4D-3 - Body ground |
Always |
Below 1 Ω |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
5. |
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
(a) Remove the instrument panel junction block assembly.
Click here
|
*a |
Component without harness connected (Instrument Panel Junction Block Assembly) |
- |
- |
(b) Remove the main body ECU (multiplex network body ECU) from the instrument panel junction block assembly.
Click here
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
A-32 (IG) - 4K-1 |
Auxiliary battery not connected to 4A-17 and 4D-3 |
10 kΩ or higher |
|
Auxiliary battery positive (+) → 4A-17 Auxiliary battery negative (-) → 4D-3 |
Below 1 Ω |
|
|
A-11 (GND1) - 4D-3 |
Always |
Below 1 Ω |
| OK |
|
REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
|