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 coloured 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: Connecting Positive Lead From Battery To Terminal And Negative Lead To Terminal
  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.

Fig 2: Identifying Connector Terminal

G03380083

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

SPECIFIED CONDITION CHART

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
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002