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Sub Sending Unit

Remove sub fuel gauge sending unit. Measure resistance between terminals No. 1 and 2 at fuel gauge sending unit while moving float up and down. See Fig 2. Resistance should increase as float is lowered. See SUB FUEL GAUGE SENDING UNIT RESISTANCE  table. Replace if necessary.

MAIN FUEL GAUGE SENDING UNIT RESISTANCE

Float Position Distance From Sending Unit Base - In. (mm) Ohms
"F" 1.244-1.480 (31.6-37.6) 1.0-3.0
1/2 1.945-2.181 (49.4-55.4) 23.1-29.1
"E" 5.193-5.429 (131.9-137.9) 47.7-49.7
SUB FUEL GAUGE SENDING UNIT RESISTANCE

Float Position Distance From Sending Unit Base - In. (mm) Ohms
"F" .256-.492 (6.5-12.5) 1.0-3.0
1/2 4.232-4.468 (107.5-113.5) 30.0-36.0
"E" 8.012-8.248 (203.5-209.5) 60.3-62.3
Fig 1: Testing Main Fuel Gauge Sending Unit
G98C03721Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Testing Sub Fuel Gauge Sending Unit
G98E03722Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002