Toyota RAV4 Service Manual: Horn relay
On-vehicle inspection
- Remove engine room no. 1 Relay block cover
- Inspect integration relay (unit a: horn relay)
- Using a screwdriver, detach the 2 claws and disconnect the integration relay from the engine room junction block.
Hint:
Tape the screwdriver tip before use.
- Measure the resistance of the integration relay.
Standard voltage 
If the result is not as specified, replace the integration relay.
- Install engine room no. 1 Relay block cover
Horn system
Parts location
System diagram
Problem symptoms table
Hint:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms are
listed in ...
Low pitched horn
Components
Removal
Remove radiator support opening cover
(see page et-4)
Remove front fender liner lh (see page et-4)
Remove front fender liner rh (see page et-4)
Remove front bumper ...
Other materials:
Vin not programmed or mismatch - ecm / pcm
Description
Dtc p0630 is set when the vehicle identification number (vin) is not stored
in the engine control module
(ecm) or the input vin is incorrect. Input the vin with the intelligent tester.
Monitor strategy
Typical enabling conditions
Typical malfunction thresholds
Com ...
Precaution
If any of following conditions are met,
keep engine idling with a/c on (engine
speed at less than 2000 rpm) for at least 1
minute:
Refrigerant gas has been refilled or a/c parts have
been replaced.
A long time has elapsed since the engine was
stopped.
Notice:
If the engine s ...
Mass air flow circuit range / performance problem
Description
Refer to dtc p0100 (see page es-86).
Monitor description
The maf meter is a sensor that measures the amount of air flowing through the
throttle valve. The ecm
uses this information to determine the fuel injection time and to provide an
appropriate air-fuel ratio. Inside
...