PGM-FI Control System — Troubleshooting Flowchart — MAP Sensor (cont'd)
6-30flowchartMAP sensor mechanical (vacuum) troubleshooting flowchart, CODE 5.
Troubleshooting Flowchart — MAP Sensor (cont'd)
1
- Check Engine warning light has been reported on. - LED indicates CODE 5.
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.
5
Is Check Engine warning light on ? Does LED indicate CODE 5 ?
NO
-Make sure all connectors are secure. -Check vacuum hoses, pipes, and connections. -Intermittent failure (test drive may be necessary).
YES
6
Stop engine.
7
Connect vacuum pump to #21 hose and apply vacuum.
8
Does it hold vacuum?
YES
Disconnect #21 hose from the throttle body and connect a T-fitting from a vacuum gauge between the throttle body and MAP sensor.
Disconnect #21 hose from the throttle body and connect a T-fitting from a vacuum gauge between the throttle body and MAP sensor.
(To page 6-31)
NO
9
Connect a vacuum pump to the MAP sensor and apply vacuum.
10
Does it hold vacuum?
NO
Replace MAP sensor.
YES
11
Replace #21 hose.