Toyota Camry (XV70): Front Door Courtesy Switch Circuit
DESCRIPTION
The main body ECU (multiplex network body ECU) detects the condition of the front door courtesy light switch assembly.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*
Click here .gif)
- *: w/ Smart Key System
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: 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 Courtesy SW | Front door courtesy light switch assembly RH signal |
OFF or ON | OFF: Front door RH closed ON: Front door RH open |
- |
| FL Door Courtesy SW |
Front door courtesy light switch assembly LH signal |
OFF or ON | OFF: Front door LH closed ON: Front door LH open |
- |
|
Tester Display |
|---|
| FR Door Courtesy SW |
|
FL Door Courtesy SW |
OK:
Normal conditions listed above are displayed.
|
Result | Proceed to |
|---|---|
|
OK | A |
|
"FR Door Courtesy SW" is not normal |
B |
| "FL Door Courtesy SW" is not normal |
C |
| A |
.gif) | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
|
| C |
| GO TO STEP 4 |
|
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| 2. |
INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH |
(a) Remove the front door courtesy light switch assembly RH.
Click here
(b) Inspect the front door courtesy light switch assembly RH.
Click here
| NG | | REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH |
|
| 3. |
CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY RH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the K52 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 |
|---|---|---|
|
R4-1 - K52-6 (FRCY) | Always |
Below 1 ? |
|
R4-1 or K52-6 (FRCY) - Body ground |
Always | 10 k? or higher |
| OK | | REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)
|
| NG | | REPAIR OR REPLACE HARNESS OR CONNECTOR |
| 4. |
INSPECT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH |
(a) Remove the front door courtesy light switch assembly LH.
Click here
(b) Inspect the front door courtesy light switch assembly LH.
Click here
| NG | | REPLACE FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH |
|
| 5. |
CHECK HARNESS AND CONNECTOR (FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY LH - MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)) |
(a) Disconnect the K52 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 |
|---|---|---|
|
R5-1 - K52-1 (FLCY) | Always |
Below 1 ? |
|
R5-1 or K52-1 (FLCY) - 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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