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

NOTE: Code 27 applies to 5S-FE only.

Fig 1: Code 21/Test No. 4 Schematic (3S-GTE) Oxygen Sensor Signal

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Fig 2: Code 21, 27/Test No. 4 Schematic (5S-FE) Oxygen Sensor Signal

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Fig 3: Code 21, 27/Test No. 4 Flow Chart (All Engines) Oxygen Sensor Signal

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