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HOMESERVICE MANUALSMAZDA1999626 ES, 2.5 D, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESENSOR RANGE CHARTSENGINE CONTROLS - SENSOR OPERATING RANGE CHARTSINTRODUCTIONENGINE COOLANT TEMPERATURE (ECT) SENSOR
1999 Mazda 626 ES, 2.5 D, Standard

Engine Coolant Temperature (ECT) Sensor

1999 Mazda 626 ES, 2.5 D, StandardSECTION Engine Coolant Temperature (ECT) Sensor
ENGINE COOLANT TEMPERATURE (ECT) SENSOR SPECIFICATIONS (B2500, B3000 & B4000)

Temperature °F (°C) (1) PID Voltage Ohms
50 (10) 3.52 58,750
68 (20) 3.06 37,300
86 (30) 2.62 24,270
104 (40) 2.16 16,150
122 (50) 1.70 10,970
140 (60) 1.35 7600
158 (70) 1.04 5370
176 (80) 0.80 3840
194 (90) 0.61 2800
212 (100) 0.47 2070
230 (110) 0.36 1550
248 (120) 0.28 1180
(1) Check sensor voltage using New Generation Star (49 T088 0A0) scan tool connected to Data Link Connector (DLC) 2. DLC is located under left side of instrument panel, right of steering column.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE (EXCEPT B2500, B3000 & B4000)

Temperature °F (°C) Ohms
Miata & Protege(1)
68 (20) 2200-2700
176 (80) 290-350
Millenia(2)
68 (20) 2200-2700
176 (80) 290-350
626(2)
68 (20) 35,500-39,200
176 (80) 7180-7920
(1) Measure resistance between ECT sensor terminals "A" and "B". See Fig 1 or Fig 2 .
(2) Measure resistance between ECT sensor terminals.
Fig 1: Identifying ECT Sensor Terminals (Miata)
G97I07736Courtesy of MAZDA MOTORS CORP.
RENDER: 1.0x

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