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Home >> Toyota >> 1991 >> Pickup Base, R150 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 4-CYL >> Code Charts >> Code 21, 27/Test No. 3 - Oxygen Sensor Signal
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Code 21, 27/Test No. 3 - Oxygen Sensor Signal

NOTE: Code 27 applies to Pickup only.
Fig 1: Code 21, 27/Test No. 3 Schematic (Pickup) Oxygen Sensor Signal
G91H18058Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Code 21/Test No. 3 Schematic (4Runner) Oxygen Sensor Signal
G91I18059Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Code 21, 27/Test No. 3 Flow Chart Oxygen Sensor Signal
G91J17722Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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