AUTO-DIMMING REARVIEW MIRROR INSPECTION [(E)]

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Operational Inspection

1.  Switch the main power ON (READY off or on).

2.  Move the vehicle to a place with a showroom level of brightness.

3.  Verify that the indicator light is illuminated.

L.H.D.

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R.H.D.

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4.  Cover the front light sensor with a hand and verify that the mirror surface darkens when light is shone on the rear light sensor.

5.  Remove your hand covering the front light sensor and verify that the mirror surface brightens.

•  If the auto-dimming mirror does not operate, inspect the terminal voltage. (See Terminal Voltage Table (Reference).)


Terminal Voltage Table (Reference)

1.  Remove the cover. (See SENSOR COVER REMOVAL/INSTALLATION.)

2.  Measure the voltage at each terminal.

•  If the voltage is not as specified in the Terminal Voltage Table (Reference), inspect the parts under “Inspection item (s)” and related wiring harnesses.
―  If the system does not work properly even though the inspection items or related wiring harnesses do not have any malfunction, replace the auto-dimming mirror. (See AUTO-DIMMING REARVIEW MIRROR REMOVAL/INSTALLATION.)

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Terminal

Signal name

Connected to

Measured condition

Voltage (V)

Inspection item(s)
A
OEC(-)
Auto dimming outer mirror
Main power is switched ON (READY off or on)
0—1.3
•  Auto dimming outer mirror
•  Related wiring harnesses
Main power is switched OFF
1.0 or less
Detect the auto-dimming rearview mirror the level of the surrounding light and glare from vehicles at the rear using the light sensor.
0—1.3
B
GND
Body ground
Under any condition
Approx. 0
•  GND point
•  Related wiring harness
C
—
—
—
—
—
D
R position signal
Indicator unit
R position
B+
•  Indicator unit
•  Related wiring harnesses
Except above
1.0 or less
E
—
—
—
—
—
F
—
—
—
—
—
G
OEC(+)
Auto dimming outer mirror
Main power is switched ON (READY off or on)
0—1.3
•  Auto dimming outer mirror
•  Related wiring harnesses
Main power is switched OFF
1.0 or less
Detect the auto-dimming rearview mirror the level of the surrounding light and glare from vehicles at the rear using the light sensor.
0—1.3
H
—
—
—
—
—
I
Power supply (IG1)
F47 15A fuse
Main power is switched ON (READY off or on)
B+
•  F47 15A fuse
•  Related wiring harnesses
Main power is switched OFF
1.0 or less
J
—
—
—
—
—