| Last Modified: 01-30-2024 | 6.11:8.1.0 | Doc ID: RM100000001G2CG |
| Model Year Start: 2019 | Model: RAV4 | Prod Date Range: [11/2018 - 12/2021] |
| Title: LIGHTING (EXT): LIGHTING SYSTEM (w/ Headlight ECU without AFS): Back-up Light Circuit; 2019 - 2021 MY RAV4 RAV4 HV [11/2018 - 12/2021] | ||
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Back-up Light Circuit |
DESCRIPTION
The hybrid vehicle control ECU assembly controls the back-up lights via the BKUP LP relay.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
- Before replacing the hybrid vehicle control ECU assembly, refer to Registration.
PROCEDURE
|
1. |
CHECK FOR DTC |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Hybrid Control / Trouble Codes.
(e) Check for DTCs.
Powertrain > Hybrid Control > Trouble Codes
|
Result |
Proceed to |
|---|---|
|
Hybrid control system DTCs are not output |
A |
|
Hybrid control system DTCs are output |
B |
| B |
|
GO TO HYBRID CONTROL SYSTEM
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![2019 - 2020 MY RAV4 HV [11/2018 - 06/2020]; HYBRID / BATTERY CONTROL: HYBRID CONTROL SYSTEM (for 2WD with NICKEL METAL HYDRIDE BATTERY): DIAGNOSTIC TROUBLE CODE CHART](/t3Portal/stylegraphics/info.gif)
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2. |
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - BODY GROUND) |
(a) Disconnect the 4D instrument panel junction block assembly connector.
|
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
3. |
CHECK HARNESS AND CONNECTOR (HYBRID VEHICLE CONTROL ECU ASSEMBLY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 4F instrument panel junction block assembly connector.
(b) Disconnect the A29 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 |
|---|---|---|
|
A29-20 (BL) - 4F-19 |
Always |
Below 1 Ω |
|
A29-20 (BL) or 4F-19 - Body ground |
Always |
10 kΩ or higher |
| NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
|
4. |
CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY (OUTPUT VOLTAGE) |
|
*a |
Component with harness connected (Instrument Panel Junction Block Assembly) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4F-19 - Body ground |
Ignition switch ON, shift lever not in R |
Below 1 V |
|
4F-19 - Body ground |
Ignition switch ON, shift lever in R |
11 to 14 V |
| NG |
|
REPLACE HYBRID VEHICLE CONTROL ECU ASSEMBLY
|
|
|
5. |
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY (OUTPUT VOLTAGE) |
|
*a |
Component with harness connected (Instrument Panel Junction Block Assembly) |
(a) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4H-10 - Body ground |
Ignition switch ON, shift lever not in R |
Below 1 V |
|
4H-10 - Body ground |
Ignition switch ON, shift lever in R |
11 to 14 V |
| OK |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR |
| NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
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