isuzu Workshop Repair Guides

Isuzu Workshop Service and Repair Manuals

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Manifold Absolute Pressure Sensor <--> [Manifold Pressure/Vacuum Sensor]|Description and Operation|Page 2268 > < Manifold Absolute Pressure Sensor <--> [Manifold Pressure/Vacuum Sensor]|Description and Operation|Page 2266

Rodeo S 2WD L4-2.2L (1999)

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Steps 1 - 7

Test Description

NOTE:  Be sure to use The same diagnostic test equipment for all measurements.

The number(s) below refer to the step number(s) on the Diagnostic Chart:

1. When you compare the Scan Tool readings to a known good vehicle, it is important to compare vehicles that use MAP sensors that have the same

part number.

2. Applying 34 kPa (10 Hg) vacuum to the MAP sensor should cause the voltage to be 1.5-2.1 volts less than the voltage at step 1. Upon applying

vacuum to the sensor, the change in voltage should be instantaneous. A slow voltage change indicates a faulty sensor.

3. Check the vacuum hose to the sensor for leaking or restriction. Be sure that no other vacuum devices are connected to the MAP hose.

NOTE:  Make sure the electrical connector remains securely fastened.

4. Disconnect the sensor from the bracket. Twist the sensor with your hand to check for an intermittent connection. Output changes greater than 0.10

volt indicate a bad sensor.

Manifold Absolute Pressure Sensor <--> [Manifold Pressure/Vacuum Sensor]|Description and Operation|Page 2268 > < Manifold Absolute Pressure Sensor <--> [Manifold Pressure/Vacuum Sensor]|Description and Operation|Page 2266