Checking Input & Output Signals At ECM Using Scan Tool (3.0L): Notes
NOTE:
Data displays not listed here are provided in the Diagnostic Fault Code (DTC) procedures.See DIAGNOSTIC TESTS
.
Various inputs and outputs can be veiwed using the data display function on the manufacturer's scan tool. Select the function, and check the input and output signals of the engine control unit. If there is an abnormal condition, inspect and repair as necessary.
DATA DISPLAY DEFINITIONS (3.0L)
| Data Display Item No. | (1)(2) System Description |
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|---|---|---|---|---|---|---|---|
| 11 | O2 Sensor Voltage | ||||||
| 12 | Mass Air flow Sensor | ||||||
| 13 | Intake Air Temperature | ||||||
| 14 | Throttle Position Sensor | ||||||
| 16 | Power Supply Control Unit | ||||||
| 18 (3) | Ignition Switch (M/T Only) | ||||||
| 18 (3) | Ignition & Inhibitor Switch (A/T Only) | ||||||
| 21 | Coolant Temperature Sensor | ||||||
| 22 | Crank Angle Sensor Signal | ||||||
| 25 | Barometric Pressure Sensor | ||||||
| 26 | Idle Position Switch | ||||||
| 28 (3) | A/C Switch | ||||||
| 29 (3) | Inhibitor Switch (A/T Only) | ||||||
| 41 | Fuel Injectors | ||||||
| 43 | EGR Temperature Sensor (California Only) | ||||||
| 44 | Ignition Coil/Spark Advance | ||||||
| 45 | Idle Speed Control Servo (Stepper Motor). | ||||||
| 49 (3) | A/C Power Relay | ||||||
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