Electro Chromic Mirror System: Inspection

INSPECT ELECTRO CHROMIC INNER MIRROR OPERATION
1. Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 4.
2. Connect the positive (+) lead from the voltmeter to terminal 2 and the negative (-) lead to terminal 3.
3. Attach a black colored tape to forward sensor to prevent it from sensing.
4. When the mode is turned to AUTO, check that indicator light lights up.
5. Light up the mirror with an electric light, and check that there is battery positive voltage and mirror surface changes "bright" to "dark".
If operation is not as specified, replace the inner mirror.

Fig 1: Inspecting Electro Chromic Inner Mirror Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

INSPECT ELECTRO CHROMIC INNER MIRROR CIRCUIT

Disconnect the connector from the mirror and inspect the connector on the wire harness side, as shown in Fig 2 .

Fig 2: Inspecting Electro Chromic Inner Mirror Circuit

G03494430

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TERMINAL SPECIFICATION

Tester connection	Condition	Specified condition
4 - Ground	Always	Continuity
1 - Ground	Ignition switch LOCK or ACC	No voltage
1 - Ground	Ignition switch ON	Battery positive voltage

If circuit is not as specified, inspect the circuits connected to other parts.

INSPECT ELECTRO CHROMIC OUTER MIRROR OPERATION
1. Disconnect the outer mirror connector.
2. Connect the positive (+) lead from the dry cell battery to terminal 4 and the negative (-) lead to terminal 5, then check that the mirror surface changes to "dark".
3. Check the mirror turns to "bright" after disconnecting the battery.
If operation is not as specified, replace the mirror assembly.

Fig 3: Inspecting Electro Chromic Outer Mirror Operation
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002