Toyota RAV4 manuals

Toyota RAV4 Service Manual: Back-up power source circuit

Description

This is the back-up power source circuit for the air conditioning amplifier. Power is supplied even when the ignition switch is turned off and is used for functions such as the diagnostic trouble code memory.

wiring diagram

Toyota RAV4. Back-up power source circuit


Inspection procedure

  1. Inspect fuse (ecu-b2)

  1. Remove the ecu-b2 fuse from the engine room no. 2 Relay block.
  2. Measure the resistance of the fuse.

Standard resistance: below 1




  1. Check wire harness (air conditioning amplifier - battery)

Toyota RAV4. Check wire harness (air conditioning amplifier - battery)


  1. Disconnect the e37 amplifier connector.
  2. Measure the voltage of the wire harness side connector.

Standard voltage




  1. Check wire harness (air conditioning amplifier - body ground)

Toyota RAV4. Check wire harness (air conditioning amplifier - body ground)


  1. Disconnect the e37 amplifier connector.
  2. Measure the resistance of the wire harness side connector.

Standard resistance




Proceed to next circuit inspection shown in problem symptoms table

Ig power source circuit
Description This is the main power source supplied to the air conditioning amplifier when the ignition switch is on (ig). This power source is used for operating components, such as the air cond ...

Air conditioning system (for manual air conditioning system)
...

Other materials:

Using the bluetooth® audio/phone
Audio unit Bluetooth® connection condition If “bt” is not displayed, the bluetooth® audio/phone cannot be used. Displays set up menu Selects items such as menu and number Turn: selects an item Press: inputs the selected item Off-hook switch Turns the hands-free sy ...

If equipped with Equipment Stop Assistant
Concept If the driver is no longer fit to drive, the system helps to safely bring the vehicle to a standstill. General information The emergency stop function is not triggered automatically. The emergency stop function can only be triggered manually by the occupants. When the system is activated, t ...

Evaporator temperatur sensor
Removal Remove air conditioning unit Remove the air conditioning radiator (see page ac- 185). Remove evaporator temperature sensor (see page ac-193) Inspection Inspect evaporator temperature sensor Measure the resistance of the sensor. Standard resistance No ...

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