- In P: ON
- Not in P: OFF
| Last Modified: 11-29-2007 | 1.6 J | |
| Service Category: Vehicle Exterior | Section: Lighting (ext) | |
| Model Year: 2008 | Model: Sequoia | Doc ID: RM000003F7C000X |
| Title: LIGHTING (EXT): LIGHTING SYSTEM: DESCRIPTION (2008 Sequoia) | ||
|
Door Mirror Foot Light Circuit |
DESCRIPTION
- Control of the exterior foot lights is performed by the mirror control ECU, which is installed inside the driver door and turns on/off the puddle light in each door mirror.
- The mirror control ECU uses CAN communication to receive signals transmitted from each ECU (the IG SW signal, park shift position signal, driver seat courtesy signal, passenger seat courtesy signal, and door lock/unlock output factor signal) and then controls the illumination of the exterior foot lights.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
PERFORM ACTIVE TEST USING TECHSTREAM (FOOT LIGHT) |
(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 / Mirror ECU / Active Test / Foot Light.
(e) Check that the Puddle light turns on/off.
Mirror ECU
|
Tester Display |
Test Part |
Control Range |
Diagnostic Note |
|---|---|---|---|
|
Foot Light |
Puddle light |
ON or OFF |
- |
OK:
Puddle light turns on/off.
|
|
2. |
CHECK CAN COMMUNICATION SYSTEM |
(a) Check for CAN communication system DTCs output.
OK:
CAN communication system DTCs are not output.
|
|
3. |
CHECK VEHICLE CONDITION |
(a) Identify the control system where the problem occurs.
Result
|
Result |
Proceed to |
|---|---|
|
All of the following apply |
A |
|
When changing the shift position |
B |
|
When operating the ignition switch |
C |
|
When opening or closing a door |
D |
|
When operating a door lock |
E |
|
|
4. |
READ VALUE USING TECHSTREAM (SHIFT SW STATUS (P RANGE)) |
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus:
(1) for 2UZ-FE engine model: Powertrain / ECT / Data List / Shift SW Status (P Range)
(2) for 3UR-FE engine model: Powertrain / Engine and ECT / Data List / Shift SW Status (P Range)
(e) According to the display on the Techstream, read the Data List.
ECT*1 or Engine and ECT*2
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
Shift SW Status (P Range) |
PNP switch status/ ON or OFF |
Shift lever is: |
When shift lever position displayed on Techstream differs from actual position, adjustment of PNP switch or shift cable may be incorrect |
*1: for 2UZ-FE engine model
*2: for 3UR-FE engine mode
OK:
The Techstream display changes normally when shift lever is moved.
Result
|
Result |
Proceed to |
|---|---|
|
OK |
A |
|
NG (for 2UZ-FE two wheel drive model) |
B |
|
NG (for 2UZ-FE four wheel drive model) |
C |
|
NG (for 3UR-FE two wheel drive model) |
D |
|
NG (for 3UR-FE four wheel drive model) |
E |
|
|
5. |
READ VALUE USING TECHSTREAM (IG SW) |
(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 / IG SW.
(e) According to the display on the Techstream, read the Data List.
Main Body
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
IG SW |
Ignition switch status/ ON or OFF |
Ignition switch is:
|
- |
OK:
The Techstream display changes normally when ignition switch is operated.
|
|
6. |
INSPECT FUSE (ECU-IG NO. 2) |
|
(a) Remove the ECU-IG No. 2 fuse from the main Body ECU. |
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
ECU-IG No. 2 fuse |
Always |
Below 1 Ω |
(c) Reinstall the ECU-IG No. 2 fuse.
|
|
7. |
READ VALUE USING TECHSTREAM (COURTESY SWITCH) |
(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) According to the display on the Techstream, read the Data List.
Main Body
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
D Door Courtesy SW |
Front door courtesy light switch LH signal / ON or OFF |
ON: Front door courtesy light switch LH ON OFF: Front door courtesy light switch LH OFF |
- |
|
P Door Courtesy SW |
Front door courtesy light switch RH signal / ON or OFF |
ON: Front door courtesy light switch RH ON OFF: Front door courtesy light switch RH OFF |
- |
OK:
The Techstream display changes normally when door courtesy light switch is operated.
|
|
8. |
READ VALUE USING TECHSTREAM (DOOR LOCK POSITION SWITCH) |
(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 / D-Door Lock Pos SW.
(e) According to the display on the Techstream, read the Data List.
Main Body
|
Tester Display |
Measurement Item/Range |
Normal Condition |
Diagnostic Note |
|---|---|---|---|
|
D-Door Lock Pos SW |
Front door lock switch signal / ON or OFF |
ON: Front door lock switch ON OFF: Front door lock switch OFF |
- |
OK:
The Techstream display changes normally when door lock switch is operated.
|
|
9. |
CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR - MIRROR ECU, BODY GROUND) |
(a) for LH:
(1) Disconnect the M5 outer rear view mirror assembly LH connector.
(2) Disconnect the M8 mirror control ECU connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
M5-6 (LP+) - M8-17 (LP) |
Always |
Below 1 Ω |
|
M5-5 (LP-) - Body Ground |
Always |
Below 1 Ω |
|
M5-6 (LP+) - Body Ground |
Always |
10 kΩ or higher |
(4) Reconnect the mirror control ECU connector.
(5) Reconnect the outer rear view mirror assembly LH connector.
(b) for RH:
(1) Disconnect the L6 outer rear view mirror assembly RH connector.
(2) Disconnect the M8 mirror control ECU connector.
(3) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
L6-6 (LP+) - M8-37 (LP) |
Always |
Below 1 Ω |
|
L6-5 (LP-) - Body Ground |
Always |
Below 1 Ω |
|
L6-6 (LP+) - Body Ground |
Always |
10 kΩ or higher |
(4) Reconnect the mirror control ECU connector.
(5) Reconnect the outer rear view mirror assembly RH connector.
|
|
10. |
INSPECT OUTER REAR VIEW MIRROR ASSEMBLY |
|
(a) Remove the outer rear view mirror assembly
|
(b) Apply battery voltage to the terminals and check that the puddle light turn on.
OK:
|
Measurement Connection |
Specified Condition |
|---|---|
|
Positive battery (+) → 6 (LP+) Negative battery (-) → 5 (LP-) |
Puddle light turn on. |
(c) Reinstall the outer rear view mirror assembly.
|
|
11. |
INSPECT PUDDLE LIGHT |
(a) Temporarily replace the puddle light bulb with a new or normally functioning one
.
(b) Check that the puddle light turn on.
OK:
Puddle light turn on.
|
|
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