PGM-FI Control System — Troubleshooting Flowchart — MAP Sensor
6-26flowchartMAP (Manifold Absolute Pressure) sensor troubleshooting flowchart, CODE 3.
Troubleshooting Flowchart — MAP Sensor
NOTE
Self-diagnosis LED indicator blinks three times: Most likely an electrical problem in the Manifold Absolute Pressure (MAP) Sensor system.
Self-diagnosis LED indicator blinks five times: Most likely a mechanical problem (broken hose) in the Manifold Absolute Pressure (MAP) Sensor system.
1
- Engine is warm and running. - Check Engine warning light is on. - LED indicates CODE 3.
2
Turn the ignition switch OFF.
3
Remove HAZARD fuse in the main fuse box for 10 seconds to reset ECU.
4
Start the engine and allow to idle.
5
Is Check Engine warning light on ? Does LED indicate CODE 3 ?
NO
Intermittent failure (test drive may be necessary).
YES
6
Turn the ignition switch OFF.
7
Disconnect the 3P connector from the MAP sensor.
8
Turn the ignition switch ON.
9
Measure voltage between YEL/RED (+) terminal and GRN/WHT (-) terminal.
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