Question about 2002 Jeep Grand Cherokee
Not correct voltage at map sensor changed computer still not right voltage book says have ecm checked already changed
Not exactly sure what you're describing. Incorrect voltage to or from Map sensor? Map sensors are very sensitive. I clean mine with a Map Sensor Spray cleaner every time I change the Air filter. Check to see if the fine, almost hair like wires in the Map sensor are broken...replace and/or clean if necessary. Best of luck resolving this problem.
Posted on Mar 31, 2014
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Posted on Jan 02, 2017
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Fig. Fig. 3: Location of the MAP sensor-TBI system shown
Fig. Fig. 4: Probe the terminals of the MAP sensor to check for proper reference voltage
Fig. Fig. 5: Manifold Absolute Pressure (MAP) sensor wiring diagram
TPS TESTINGSee Figures 2, 3 and 4
Fig. Fig. 2: Using a DVOM, backprobe terminals A and B of the TPS sensor to check for proper reference voltage
Fig. Fig. 3: Using the DVOM, backprobe terminals C and B of the
TPS sensor, open and close the throttle and make sure the voltage
Fig. Fig. 4: Throttle Position Sensor (TPS) wiring diagram
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