DESCRIPTION
The main body ECU (driver side junction block assembly) controls operation of the DOME CUT relay in order to supply power to the interior lights.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1. |
INSPECT DOME CUT RELAY |
(a) Remove the DOME CUT relay.
(b) Measure the resistance according to the value(s) in the table below. Standard Resistance:
|
|
NG |
REPLACE DOME CUT RELAY |
|
2. |
CHECK HARNESS AND CONNECTOR (BATTERY - MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY)) |
(a) Disconnect the 2C main body ECU (driver side junction block assembly) connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
2C-27 - Body ground |
Ignition switch off |
11 to 14 V |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
3. |
CHECK HARNESS AND CONNECTOR (DOME CUT RELAY - MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) AND BODY GROUND) |
(a) Disconnect the 2R main body ECU (driver side junction block assembly) connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
Relay Terminal 5 - 2R-6 |
Always |
Below 1 Ω |
Relay Terminal 2 - 2R-7 |
Always |
Below 1 Ω |
Relay Terminal 5 - Body ground |
Always |
10 kΩ or higher |
Relay Terminal 2 - Body ground |
Always |
10 kΩ or higher |
Relay Terminal 1 - Body ground |
Always |
Below 1 Ω |
NG |
REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
4. |
INSPECT MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK ASSEMBLY) |
(a) Install the DOME CUT relay.
(b) Reconnect the 2C main body ECU (driver side junction block assembly) connector.
(c) Reconnect the 2R main body ECU (driver side junction block assembly) connector. |
|
(d) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection |
Condition |
Specified Condition |
---|---|---|
2R-6 - Body ground |
Ignition switch off |
11 to 14 V |
2R-7 - Body ground |
Ignition switch ON |
11 to 14 V |
*1 |
Component with harness connected (Main Body ECU (Driver Side Junction Block Assembly)) |
OK |
REPAIR OR REPLACE HARNESS OR CONNECTOR (DOME CUT RELAY - EACH LIGHT) |
NG |
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
Removal
REMOVAL
PROCEDURE
1. REMOVE FRONT SEAT HEADREST ASSEMBLY
2. REMOVE FRONT SEAT REAR OUTER TRACK COVER
3. REMOVE FRONT SEAT REAR INNER TRACK COVER
4. REMOVE FRONT SEAT ASSEMBLY
5. REMOVE RECLINING POWER SEAT SWITCH KNOB
6. REMOVE SLIDE AND VER ...
Engine compartment
► 2GR-FE engine
1. Engine coolant reservoir
2. Engine oil filler cap
3. Engine oil level dipstick
4. Brake fluid reservoir
5. Battery
6. Fuse box
7. Electric cooling fans
8. Condenser
9. Radiator
10.Washer fluid tank
► 1AR-FE engine
...
Terminals Of Ecu
TERMINALS OF ECU
1. REAR TELEVISION CAMERA ASSEMBLY
(a) Disconnect the R21 rear television camera assembly connector.
(b) Measure the voltage on the wire harness side connector according to the value(s)
in the table below.
Terminal No. (Symb ...