Code 21, 27/Test No. 4 - O2 Sensor Signal

NOTE: Code 27 applies to 4A-GE only.

Fig 1: Code 21/Test No. 4 Schematic (4A-FE) O2 Sensor Signal

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Fig 2: Code 21/Test No. 4 Flow Chart (4A-FE) O2 Sensor Signal

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Fig 3: Code 21, 27/Test No. 4 Schematic (4A-GE California) O2 Sensor Signal

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Fig 4: Code 21, 27/Test No. 4 Schematic (4A-GE Federal) O2 Sensor Signal

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Fig 5: Code 21, 27/Test No. 4 Flow Chart (4A-GE) O2 Sensor Signal

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