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EC-1358
[YD (WITH EURO-OBD)]
DTC P1472, P1473 ENGINE ROOM AIR TEMPERATURE SENSOR
2. CHECK ENGINE ROOM AIR TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1. Disconnect engine room air temperature sensor (1) harness
connector.
– : Vehicle front
– Differential exhaust pressure sensor (2)
– Battery (3)
2. Turn ignition switch ON.
3. Check voltage between engine room air temperature sensor ter-
minal 1 and ground with CONSULT-II or tester.
OK or NG
OK >> GO TO 4.
NG >> GO TO 3.
3. DETECTED MALFUNCTIONING PART
Check the following.
● Harness connectors E84, F51
● Harness for open or short between engine room air temperature sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK ENGINE ROOM AIR TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between engine room air temperature sensor terminal 2 and ECM terminal 75.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> GO TO 5.
5. DETECTED MALFUNCTIONING PART
Check the following.
● Harness connectors E84, F51
● Harness for open or short between engine room air temperature sensor and ECM
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB3158E
Voltage: Approximately 5.3V
PBIB2245E
Continuity should exist.
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