Toyota Camry (XV70): Inside Handle Illumination Light Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) controls the operation of the following lights:
- Inside Handle Illumination Light LH (No. 1 Interior Illumination Light Assembly LH)
- Inside Handle Illumination Light RH (No. 1 Interior Illumination Light Assembly RH)
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
- Inspect the fuses for circuits related to this system before performing the following procedure.
- Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*
Click here
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- *: w/ Smart Key System
PROCEDURE
|
1. | PERFORM ACTIVE TEST 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: Body Electrical / Main Body / Active Test.
(e) Perform the Active Test according to the display on the Techstream.
Body Electrical > Main Body > Active Test|
Tester Display | Measurement Item |
Control Range | Diagnostic Note |
|---|---|---|---|
|
Interior Illumination Light2 |
Inside handle illumination light (No. 1 interior illumination light assembly) |
OFF or ON | Preconditions for using the Active Test to check dimmer controlled illumination:
|
|
Tester Display |
|---|
| Interior Illumination Light2 |
OK:
Inside handle illumination lights come on.
|
Result | Proceed to |
|---|---|
|
OK | A |
|
NG (Inside handle illumination light LH does not come on) |
B |
| NG (Inside handle illumination light RH does not come on) |
C |
| NG (Inside handle illumination light LH and RH do not come on) |
D |
| A |
.gif) | USE SIMULATION METHOD TO CHECK
|
| C |
| GO TO STEP 5 |
| D |
| GO TO STEP 8 |
|
.gif)
| 2. |
INSPECT NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY LH |
(a) Remove the inside handle illumination light LH (No. 1 interior illumination light assembly LH).
Click here
(b) Inspect the inside handle illumination light LH (No. 1 interior illumination light assembly LH).
Click here
| NG | | REPLACE INSIDE HANDLE ILLUMINATION LIGHT LH (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY LH)
|
|
| 3. |
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY LH) |
(a) Disconnect the 3B instrument panel junction block assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
3B-26 - O14-2 (+) | Always |
Below 1 ? |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 4. |
CHECK HARNESS AND CONNECTOR (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the K53 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
O14-1 (-) - K53-21 (LED2) |
Always | Below 1 ? |
| OK | | USE SIMULATION METHOD TO CHECK
|
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 5. |
INSPECT NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY RH |
(a) Remove the inside handle illumination light RH (No. 1 interior illumination light assembly RH).
Click here
(b) Inspect the inside handle illumination light RH (No. 1 interior illumination light assembly RH).
Click here
| NG | | REPLACE INSIDE HANDLE ILLUMINATION LIGHT RH (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY RH)
|
|
| 6. |
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY RH) |
(a) Disconnect the 3B instrument panel junction block assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
3B-26 - N14-2 (+) | Always |
Below 1 ? |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 7. |
CHECK HARNESS AND CONNECTOR (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the K53 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
N14-1 (-) - K53-21 (LED2) |
Always | Below 1 ? |
| OK | | USE SIMULATION METHOD TO CHECK
|
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 8. |
CHECK HARNESS AND CONNECTOR (POWER SOURCE - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY) |
(a) Disconnect the 3F instrument panel junction block assembly connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
3F-1 - Body ground | Always |
11 to 14 V |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 9. |
CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY |
|
*a | Component without harness connected (Instrument Panel Junction Block Assembly) |
- | - |
(a) Disconnect the 3B instrument panel junction block assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
3B-26 - 3F-1 | Always |
Below 1 ? |
| NG | | REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|
| 10. |
CHECK HARNESS AND CONNECTOR (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY - NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY) |
(a) Disconnect the O14 inside handle illumination light LH (No. 1 interior illumination light assembly LH) connector.
(b) Disconnect the N14 inside handle illumination light RH (No. 1 interior illumination light assembly RH) connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
3B-26 - O14-2 (+) | Always |
Below 1 ? |
|
3B-26 - N14-2 (+) | Always |
Below 1 ? |
|
3B-26, O14-2 (+) or N14-2 (+) - Body ground |
Always | 10 k? or higher |
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 11. |
CHECK HARNESS AND CONNECTOR (NO. 1 INTERIOR ILLUMINATION LIGHT ASSEMBLY - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the K53 main body ECU (multiplex network body ECU) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection | Condition |
Specified Condition |
|---|---|---|
|
O14-1 (-) - K53-21 (LED2) |
Always | Below 1 ? |
|
N14-1 (-) - K53-21 (LED2) |
Always | Below 1 ? |
|
O14-1 (-), N14-1 (-) or K53-21 (LED2) - Body ground |
Always | 10 k? or higher |
| OK | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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