Toyota RAV4 Service Manual: Ig power source circuit

Toyota RAV4 Service Manual / Air conditioning / Air conditioning system (for automatic air conditioning system) / Diagnostic trouble code chart (2006/01- ) / 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 conditioning amplifier and servo motors.

Wiring diagram

Toyota RAV4. Ig power source circuit

Inspection procedure

Inspect fuse (ecu-ig2)

Remove the ecu-ig2 fuse from the instrument panel junction block.
Measure the resistance of the fuse.

Standard resistance: below 1

Check wire harness (air conditioning amplifier - battery)

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

Standard voltage

Check wire harness (air conditioning amplifier - body ground)

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

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

Standard resistance

Proceed to next circuit inspection shown in problem symptoms table

Compressor circuit

Description When the a/c switch is turned on, the magnetic clutch on signal is sent from the air conditioning amplifier. Then the mg clt relay turns on to operate the magnetic clutch. Wiring diag ...

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 diagnos ...

Other materials:

Removal (2006/01- )
Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. Remove air cleaner case sub-assembly (for 2az-fe) Remove the air clea ...

Remote Control Parking
Concept The vehicle can be remotely parked and driven out in reverse in the case of suitable forwardparking spaces, for instance a garage. The driver is not in the vehicle, but controls the parking procedure responsibly from the outside using the BMW display key. Stop the vehicles manually in the c ...

Removal
Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. Remove radiator support opening cover Remove front wheel rh Remove no. 1 ...