|
|
− − − − − − − − 01 YES NO YES NO YES NO YES NO 11-170 PGM-FI System MIL Circuit Troubleshooting (cont’d) PCM CONNECTOR E (31P) MIL (GRN/ORN) JUMPER WIRE 5. Turn the ignition switch ON (II), and watch the Malfunction Indicator Lamp (MIL). If the MIL always come on and stays on, go to step 22. But if the MIL sometimes works • An intermittent short in the wire between the PCM (E16) and the data link connector (DLC) • An intermittent short in the wire between the PCM (E4) and the gauge assembly. If the MIL is always off, go to step 6. But if the MIL sometimes works normally, first check for • A loose No. 9 BACK UP LIGHT, INSTRUMENT LIGHT (7.5A) fuse in the driver’s under-dash fuse/ • A loose ACG S (15A) fuse in the under-hood fuse/ relay box. • A loose No. 1 FUEL PUMP (15A) fuse in the driver’s under-dash fuse/relay box. • A poor connection at PCM terminal E4. between the PCM (E4) and the gauge assembly. • An intermittent short in the wire between the PCM (A31) and the manifold absolute pressure • An intermittent short in the wire between the PCM (A30) and the throttle position (TP) sensor or • An intermittent short in the wire between the PCM (E6) and the fuel tank pressure (FTP) sensor. 6. Turn the ignition switch OFF and then ON (II) again. Go to step 7. Check for these problems: • A blown No. 9 BACK UP LIGHT, INSTRUMENT LIGHT (7.5A) fuse in the driver’s under-dash • A short or open in the wire between No. 9 BACK UP LIGHT, INSTRUMENT LIGHT (7.5A) fuse, and 7. Try to start the engine. Go to step 8. Go to step 11. 8. Turn the ignition switch OFF . 9. Connect PCM connector terminal E4 and body ground with a jumper wire. 10. Turn the ignition switch ON (II). Substitute a known-good PCM and recheck (see page 11-5). If the symptom/indication goes Check for an open in the wires between the PCM (E4) and the gauge assembly. Also check for a Wire side of female terminals Does the MIL come on and stay on f or mor e than Is the low oil pr essur e indicator on? Does the engine star t? Is the MIL on? 03/07/29 09:22:55 61S0X050_110_0170 |