Last Modified: 04-05-2023 |
6.11:8.1.0 |
Doc ID: RM100000000ZY85 |
Model Year Start: 2017 |
Model: Sienna |
Prod Date Range: [08/2016 -
] |
Title: LIGHTING (EXT): LIGHTING SYSTEM: Front Fog Light Circuit; 2017 - 2020 MY Sienna [08/2016 - ] |
DESCRIPTION
The main body ECU controls the front fog light relay.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
PROCEDURE
1.
|
PERFORM ACTIVE TEST USING TECHSTREAM (FRONT FOG LIGHT RELAY)
|
(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) Check that the relay operates.
Main Body
Tester Display
|
Test Part
|
Control Range
|
Diagnostic Note
|
Front Fog Light Relay
|
Front fog light relay
|
ON/OFF
|
-
|
OK:
Front fog light relay operates. (Front fog lights come on.)
OK |
|
PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE
(See page
)
|
NG
|
|
|
2.
|
INSPECT FRONT FOG LIGHT RELAY (FOG FR RELAY)
|
(a) Remove the front fog light relay.
(b) Inspect the front fog light relay (See page
).
NG |
|
REPLACE FRONT FOG LIGHT RELAY
|
OK
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (BATTERY - FRONT FOG LIGHT RELAY)
|
(a) Remove the front fog light relay.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
1 - Body ground
|
Always
|
11 to 14 V
|
5 - Body ground
|
Always
|
11 to 14 V
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
4.
|
CHECK HARNESS AND CONNECTOR (FRONT FOG LIGHT RELAY - INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)
|
(a) Disconnect the 2F 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
|
1 - 2F-38
|
Always
|
Below 1 Ω
|
1 or 2F-38 - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
OK
|
|
|
5.
|
INSPECT INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
(a) Remove the instrument panel junction block assembly.
|
|
*a
|
Component without harness connected
(Instrument Panel Junction Block Assembly)
|
|
|
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
2F-38 - 2I-13 (FFGO)
|
Always
|
Below 1 Ω
|
2F-38 or 2I-13 (FFGO) - Body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPLACE INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY
|
|