Contents: Precautionary measures ↓ Turning on thermal fuses ↓ Replacing fuses ↓ Identification of connectors ↓
Precautionary measures
1. Before working on electrical equipment, disconnect the cable from the negative terminal of the battery.
2. If it is necessary to disconnect the battery for a check or repair, be sure to first disconnect the cable from the negative (-) terminal, which is connected to the vehicle body (ground).
3. When carrying out welding work, disconnect the battery and the electronic control unit connectors.
4. Do not open the ECU cover unless absolutely necessary, as the integrated circuit of the ECU may be damaged by static electricity.
Turning on thermal fuses
1. Remove the thermal fuse.
2. To turn on the fuse, insert the needle into the hole and press it.
3. Check the conductivity between the terminals with an ohmmeter.
If there is no conductivity after the fuse is turned on, install a new one with similar characteristics.
Note: If the fuse continues to trip after replacement, check the circuit it protects for a short circuit.
Replacing fuses
1. Before servicing, turn off the ignition and all electrical devices.
2. Install fuses only with the specified current rating.
Note: Do not use a fuse with a higher amperage rating or any other objects ("bugs") in place of a blown fuse. This may cause more serious damage or a fire.
Component arrangement (door locks, headlights and lighting).
1 - Multiplex control unit,
2 - main ignition key,
3 - turn signal repeater,
4 - main window control switch,
5 - door limit switch,
6 - electric drive of the front door lock,
7 - interior lighting lamp,
8 - electric drive of the rear side door lock,
9 - rear combination light,
10 - headlights,
11 - collision sensor.
3. Remove and install the fuse only with a straight movement, without twisting or rocking. Otherwise, the contacts may move too wide and the fuse will not hold in them.
Note: Use a special tool to remove and install the fuse (see picture).
[The original can be read on the website: www.TOYOTAMAN.ru]
4. If after replacing the fuse it burns out again, check the circuits for open circuits and short circuits.
Identification of connectors
1. The contacts in the female part of the connector are numbered from the top left to the bottom right.
2. The contacts of the plug part of the connector are numbered from the upper right to the lower left edge.
Note: When multiple connectors are used in one node, the names of each connector are indicated (letter of the alphabet) and contact number.
3. Unless otherwise stated, all connectors are shown from the opening side with the lock facing up.
4. When disconnecting connectors, do not pull on the wires and be careful when disconnecting the retaining clips.
1 - squeeze,
2 - press.