Toyota Sienna Service Manual: Air fuel ratio sensor relay
INSPECTION
1. INSPECT AIR FUEL RATIO SENSOR RELAY
(a) Using an ohmmeter, measure the resistance according to the value(s) in the table below.
Standard resistance
If the result is not as specified, replace the relay.
Circuit opening relay
INSPECTION
1. INSPECT CIRCUIT OPENING RELAY
(a) Using an ohmmeter, measure the resistance
according to the value(s) in the table below.
Standard resistance
If the result is not as specified ...
Engine
ON-VEHICLE INSPECTION
1. INSPECT ENGINE COOLANT
(a) Inspect the engine coolant (See page CO-1).
2. INSPECT ENGINE OIL
(a) Inspect the engine oil (See page LU-1).
3. INSPECT BATTERY
(a) Inspect t ...
Other materials:
Precaution
1. Check that the battery cables are connected to the
correct terminals.
2. Disconnect the battery cables when the battery is
given a quick charge.
3. Do not perform tests with a high voltage insulation
resistance tester.
4. Never disconnect the battery cables while the engine
is runnin ...
On-vehicle inspection
1. INSPECT OCCUPANT CLASSIFICATION ECU
(VEHICLE NOT INVOLVED IN COLLISION)
Perform a diagnostic system check.
2. INSPECT OCCUPANT CLASSIFICATION ECU
(VEHICLE INVOLVED IN COLLISION)
Perform a diagnostic system check.
Even if the airbag was not deployed, check if there
is ...
Precaution
NOTICE:
Because the compressor operates at high voltages, wear
electric insulated gloves and pull out the service plug to
cut the high-voltage circuit before inspection.
1. DO NOT HANDLE REFRIGERANT IN AN ENCLOSED AREA OR NEAR AN OPEN FLAME
2. ALWAYS WEAR EYE PROTECTION
3. BE CAREFUL NOT T ...
