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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
G91I17721Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Code 21/Test No. 4 Schematic (4A-FE) Oxygen Sensor Signal
G91A17723Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Code 21, 27/Test No. 4 Schematic (5S-FE) Oxygen Sensor Signal
G91C17725Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 4: Code 21/Test No. 4 Flow Chart (3S-GTE) Oxygen Sensor Signal
G91J17722Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 5: Code 21, 27/Test No. 4 Flow Chart (4A-FE & 5S-FE) Oxygen Sensor Signal
G91B17724Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002