1996 Mazda MX-6 Base, AutomaticFACTORY OEM SERVICE PROCEDURE

Engine Controls - Sensor Operating Range Charts - 2.0L: Introduction

Sensor operating range information can help determine if a sensor is out of calibration. An out-of-calibration sensor may not set a diagnostic trouble code, but it may cause driveability problems.

NOTE: Unless stated otherwise in test procedure, perform all voltage tests using a Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance.
CAMSHAFT POSITION (CMP) SENSOR VOLTAGE (A/T)

ECM/PCM Terminal (1) (2) Voltage
SGC Signal 5 (1 pulses/rev)
(1) See PIN VOLTAGE CHART S article for terminal identification.
(2) Rotate distributor drive by hand while measuring output voltage.
CAMSHAFT POSITION (CMP) SENSOR VOLTAGE (M/T)

ECM Terminal (1) (2) Voltage
SGT Signal 5 (4 pulses/rev)
SGC Signal 5 (1 pulses/rev)
(1) See PIN VOLTAGE CHART S article for terminal identification.
(2) Rotate distributor drive by hand while measuring output voltage.
CRANKSHAFT POSITION (CKP) SENSOR RESISTANCE

Terminals (1) Temperature Ohms
"A" & "B" 68°F (20°C) 520-850
(1) See appropriate SYSTEM/COMPONENT TESTS article for terminal identification.
ENGINE COOLANT TEMPERATURE (ECT) SENSOR RES. (M/T)

Temperature Ohms
68°F (20°C) 2200-2700
176°F (80°C) 290-350
EGR BOOST SENSOR VOLTAGE MX6 2.0L & 626 2.0L)

Vacuum Voltage
4.4 in. Hg 0.270-0.330
11.8 in. Hg 1.395-1.705
28.1 in. Hg 3.870-4.730
31.0 in. Hg 4.320-5.280
EGR VALVE POSITION SENSOR RESISTANCE (1)

Terminals Ohms W/ No Vacuum Applied Ohms @ 5.9 in. Hg
"A" & "B" 2700 2700
"A" & "C" 500 2700
"B" & "C" 2400 100
(1) See appropriate SYSTEM/COMPONENT TESTS article for terminal identification.
EGR VALVE POSITION SENSOR VOLTAGE (1)

Terminals Volts W/ No Vacuum Applied Volts @ 5.9 in. Hg
"A" 0 0
"B" 4.5-5.5 4.5-5.5
"C" 0.8 4.8
(1) See appropriate SYSTEM/COMPONENT TESTS article for terminal identification.
HEATED OXYGEN SENSOR (HO2S)

Operating Condition Volts
Acceleration 0.5-1.0
Deceleration 0.0-0.5
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE (A/T)

Temperature Ohms
68°F (20°C) 35,400-39,300
140°F (68°C) 7100-8000
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE (M/T)

Temperature Ohms
77°F (25°C) 29,700-36,300
185°F (85°C) 3300-3700
MASS AIRFLOW (MAF) SENSOR VOLTAGE

Terminal (1) Ignition On Volts Engine Running Volts
"C" (Power Supply) 12.0 12.0
"B" (Signal) 1.0-1.5 1.5-5.0
"A" (Ground) 0-1 0-1
(1) See appropriate SYSTEM/COMPONENT TESTS article for terminal identification.
TP SENSOR VOLTAGE

ECM/PCM Wire Color Closed Throttle Volts WOT Volts
MX-6 & 626
2.0L A/T: Pink/Blue (89) (1) 0.3-0.7 3.4-5.3
2.0L M/T: Pink/Green (3F) (1) 0.3-0.7 3.4-5.3
(1) ECM/PCM terminal pin No. in parentheses.
THROTTLE POSITION (TP) SENSOR RESISTANCE

Test Condition Ohms
Between Terminals "A" & "C" (1) 4000-6000
(1) See appropriate SYSTEM/COMPONENT TESTS article for terminal identification.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.