the moment a DTC is stored. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, if the
engine was warmed up or not, if the air fuel ratio was lean or rich, and other data from the time the malfunction occurred.
PROCEDURE
1. INSPECT AIR FUEL RATIO SENSOR (HEATER RESISTANCE)
(a) Disconnect the air fuel ratio sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
(c) Reconnect the air fuel ratio sensor connector.
NG -- REPLACE AIR FUEL RATIO SENSOR See: Powertrain Management/Computers and Control Systems/Oxygen
Sensor/Service and Repair/Air Fuel Ratio Sensor/Removal
OK -- Continue to next step.
2. CHECK TERMINAL VOLTAGE (+B OF AIR FUEL RATIO SENSOR)
(a) Disconnect the air fuel ratio sensor connector.
(b) Turn the engine switch on (IG).
(c) Measure the voltage according to the value(s) in the table below.
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