LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 1991 >> LS 400 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Airflow Meter Air Temperature Sensor Resistance
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Airflow Meter Air Temperature Sensor Resistance

Turn ignition off. Disconnect the airflow meter connector. Using a DVOM, measure resistance between the airflow meter terminals as shown. See Fig 1 & 5. For resistance specifications, refer to the AIRFLOW METER AIR TEMPERATURE SENSOR RESISTANCE  table.

Fig 1: ES250 Airflow Meter Terminal ID
G90J18852Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: LS400 Airflow Meter Terminal ID
G91C16313Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
AIRFLOW METER AIR TEMPERATURE SENSOR RESISTANCE

Terminals Ohms Temp. °F (°C)
VS & E2 (1) 200-600 N/A
VC & E2 (1) 200-400 N/A
THA & E2 10,000-20,000 -4 (-20)
THA & E2 4000-7000 32 (0)
THA & E2 2000-3000 68 (20)
THA & E2 900-1300 104 (40)
THA & E2 400-700 140 (60)
FC & E1 (1) Infinity N/A
(1) Specification for ES250 only.