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Home >> Suzuki >> 1993 >> Sidekick JS, 4D Utility >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System/Component Tests >> Engine Sensors & Switches >> Manifold Absolute Pressure (Map) Sensor (Samurai, Sidekick TBI & Swift SOHC)
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Manifold Absolute Pressure (Map) Sensor (Samurai, Sidekick TBI & Swift SOHC)

  1. Sensor is mounted to right center of firewall. To test pressure sensor on vehicle, turn ignition on. Connect voltmeter between ground and indicated ECM connector terminal (backprobe ECM terminal). See MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR OUTPUT VOLTAGE (ON-VEHICLE)  table.
  2. If voltage is not within specification, see CODE 31 or CODE 32 in appropriate TESTS W/CODES article. To bench test pressure sensor, see MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR OUTPUT VOLTAGE (OFF-VEHICLE)  table. If voltage is not within specification, replace MAP sensor.
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR OUTPUT VOLTAGE (ON-VEHICLE)

Altitude (Feet) Vacuum (In. Hg) (1)(2) Output Voltage
Samurai & Sidekick TBI
0 30 3.6-4.4
1000 29 3.5-4.2
2000 28 3.4-4.1
3000 27 3.2-4.0
4000 26 3.1-3.8
5000 25 3.0-3.7
6000 24 2.9-3.6
7000 23 2.8-3.4
8000 22 2.7-3.3
9000 21 2.6-3.2
10,000 20 2.5-3.1
Swift SOHC
0 30 3.5-4.1
1000 29 3.4-4.0
2000 28 3.2-3.8
3000 27 3.1-3.7
4000 26 3.0-3.6
5000 25 2.9-3.5
6000 24 2.8-3.3
7000 23 2.7-3.2
8000 22 2.6-3.1
9000 21 2.5-3.0
10,000 20 2.4-2.9
(1) MAP sensor output voltage is tested with coupler connected to ECM. ECM is located near glove box on Samurai or upper left corner of instrument panel on Sidekick and Swift SOHC. Before testing MAP sensor output voltage, ensure ECM supply voltage is 4.75-5.25 volts at connector terminal A23 (Gray/Red wire) and terminal A24 (Gray/Yellow wire) on Samurai and Sidekick, or terminal B1 (Light Green wire) and terminal A25 (Light Green/Blue wire) on Swift SOHC.
(2) Output voltage is checked at ECM connector terminal A22 (Gray/Green wire) and terminal A24 (Gray/Yellow wire) on Samurai and Sidekick, or terminal B2 (Light Green/Red wire) and terminal A25 (Light Green/Blue wire) on Swift SOHC. Start engine, if possible, and see if output voltage varies.
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR OUTPUT VOLTAGE (OFF-VEHICLE)

Altitude (Feet) Vacuum (In. Hg) (1)(2) Output Voltage
Samurai & Sidekick TBI
0 30 3.4-3.8
1000 29 3.3-3.7
2000 28 3.1-3.6
3000 27 3.0-3.5
4000 26 2.9-3.3
5000 25 2.8-3.2
6000 24 2.7-3.1
7000 23 2.6-3.0
8000 22 2.5-2.9
9000 21 2.4-2.8
10,000 20 2.3-2.7
Swift SOHC
0-2000 28-30 2.9-4.2
2001-5000 25-28 2.7-4.0
5001-8000 22-25 2.5-3.8
8001-10,000 20-22 2.0-3.3
(1) 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 on Samurai, Sidekick and Swift SOHC. Negative lead of batteries is connected to ground terminal. Check output voltage between VOUT terminal and ground.
(2) Voltage should reduce when up to 15 in. Hg of vacuum is applied to MAP sensor.
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