1995 Suzuki Swift AutomaticFACTORY OEM SERVICE PROCEDURE

Sensor Operating Range Charts

ENGINE COOLANT TEMPERATURE (ECT) SENSOR RESISTANCE

Temp. °F (°C) Ohms
32 (0) 5740
68 (20) 2280-2630
104 (40) 1150
140 (60) 584
176 (80) 305-331
INTAKE AIR TEMPERATURE (IAT) SENSOR RESISTANCE

Temp. °F (°C) Ohms
32 (0) 5880
68 (20) 2210-2690
104 (40) 1140
140 (60) 580
176 (80) 290-350
CAUTION: Damage to MAP sensor will occur if connections are made incorrectly.
MAP SENSOR OUTPUT VOLTAGE (OFF-VEHICLE)

Altitude (Feet) Vacuum (In. Hg) (1)(2) Output Voltage
0-2000 28-30 3.1-3.6
2001-5000 25-28 2.8-3.4
5001-8000 22-25 2.6-3.1
8001-10,000 20-22 2.4-2.9
(1) Voltage should reduce when up to 15 in. Hg of vacuum is applied to MAP sensor.
(2) MAP sensor output voltage is tested with three 1.5-volt batteries connected in series (output 4.5-5.0 volts). Positive lead of batteries is connected to VIN terminal. Negative lead of batteries is connected to ground terminal. Check output voltage between VOUT terminal and ground.
MAP SENSOR OUTPUT VOLTAGE (ON-VEHICLE)

Altitude (Feet) Vacuum (In. Hg) (1)(2) Output Voltage
0 30 3.5-3.8
1000 29 3.4-3.7
2000 28 3.3-3.6
3000 27 3.2-3.5
4000 26 3.1-3.4
5000 25 3.0-3.3
6000 24 2.9-3.2
7000 23 2.8-3.1
8000 22 2.7-3.0
9000 21 2.6-2.9
10,000 20 2.5-2.8
(1) MAP sensor output voltage is tested with coupler connected to ECM. ECM is located near glove box. Before testing MAP sensor output voltage, ensure ECM supply voltage is 4.75-5.25 volts at connector terminal B1 (Light Green wire) and terminal B9 (Light Green/Black wire).
(2) Output voltage is checked at ECM connector terminal B3 (Light Green/Red wire) and terminal B9 (Light Green/ Black wire). Start engine, if possible, and see if output voltage varies.
CAUTION: Blowing compressed air through mass airflow sensor will damage it.
POWER STEERING PRESSURE SIGNAL VSV (IF EQUIPPED)

Application Ohms
Swift (1) .33-.39
(1) Measure between power steering VSV terminals.
THROTTLE POSITION (TP) SENSOR RESISTANCE

Application Ohms
Between Terminals "A" & "C" 100-100,000
Between Terminals "A" & "D" 2870-5330
VEHICLE SPEED SENSOR (VSS) RESISTANCE

Application Ohms
Swift (1) *
(1) With ohmmeter connected to vehicle speed sensor terminals, ohmmeter should alternate between zero and infinity 4 times per sensor shaft revolution.
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.

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