RL V6-3.5L (2007)
Malfunction Indicator Lamp: Testing and Inspection
MIL Circuit Troubleshooting
1. Turn the ignition switch ON (II).
2. Do the gauge self-diagnostic procedure.
Does the MIL indicator flash?
YES - Go to step 3.
NO - Substitute a known good gauge assembly, and recheck. If the MIL circuit is OK, replace the original gauge assembly.
3. Turn the ignition switch OFF.
4. Turn the ignition switch ON (II), and watch the MIL.
Does the MIL stay off?
YES-Go to step 17.
NO-Go to step 5.
5. Turn the ignition switch OFF.
6. Turn the ignition switch ON (II), wait for 20 seconds, and watch the MIL.
Does the MIL stay on or flash more than 5 times?
YES-Go to step 7.
NO-The MIL circuit is OK.
7. Turn the ignition switch OFF.
8. Connect the HDS.
9. Turn the ignition switch ON (II), and read the HDS.
Does the HDS communicate with the PCM?
YES - Go to step 10.
NO - Go to "DLC Circuit Troubleshooting". See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component
Tests and General Diagnostics/DLC Circuit Troubleshooting
10. Check for Temporary DTCs or DTCs with the HDS.
Are any Temporary DTCs or DTCs indicated?
YES - Go to the indicated DTC's troubleshooting.
NO - Go to step 11.
11. Check the MIL in the DATA LIST with the HDS.
Does it indicate ON?
YES - Go to step 12.
NO - Substitute a known good gauge assembly, and recheck. If the MIL circuit is OK, replace the original gauge assembly.
12. Check the SCS in the DATA LIST with the HDS.
Is a short indicated?
YES - Go to step 13.
NO - Update the PCM if it does not have the latest software, or substitute a known good PCM, then recheck. If the symptom/indication goes away
with a known good PCM, replace the original PCM.
