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3.2CL & 3.2TL

  1. Disconnect Intake Manifold Runner Control (IMRC) module 14-pin harness connector. Check for continuity between ground and IMRC module 14-pin harness connector terminal No. 10 (Black wire). If continuity is present, go to next step. If continuity is not present, repair open in Black wire between IMRC 14-pin harness connector terminal No. 10 and ground terminal. See appropriate wiring diagram under ENGINE PERFORMANCE in WIRING DIAGRAMS.
  2. Turn ignition switch on. Measure voltage between ground and IMRC 14-pin harness connector terminal No. 4 (Black/Yellow wire). If battery voltage is not present, go to next step. If battery voltage is present, go to step  4 .
  3. Check for blown No. 6 PCM (15-amp) fuse. If fuse is blown, replace it. If fuse blows again, repair short in Black/Yellow wire between IMRC module and No. 6 PCM (15-amp) fuse in driver's under-dash fuse/relay box. If No. 6 PCM (15-amp) fuse is not blown, repair open in Black/Yellow wire between IMRC module and No. 6 PCM (15-amp) fuse in driver's under-dash fuse/relay box.
  4. Turn ignition switch off. Disconnect IMRC actuator 2-pin harness connector. Measure resistance between IMRC actuator 2-pin harness connector terminals. If 2-5 ohms is present, go to next step. If resistance is not as specified, replace IMRC actuator. Reconnect all connectors.
  5. Measure resistance between IMRC module 14-pin connector terminals No. 3 and No. 11. If 2-5 ohms is present, go to step  7 . If resistance is not as specified, go to next step.
  6. Disconnect IMRC actuator 2-pin connector. Check for continuity between ground and IMRC module 14-pin connector terminals No. 3 and No. 11 individually. If there is continuity, repair short in wire between IMRC module and the actuator. If there is no continuity, repair open in wire between IMRC module and the actuator.
  7. Start engine. Measure voltage between IMRC module 14-pin connector terminals No. 6 and body ground. If there is 5 volts with engine speed below 3500 RPM, and 0 volt with engine speed above 4000 RPM, replace the IMRC module. If there is 5 volts with engine speed below 3500 RPM, and 0 volt with engine speed above 4000 RPM, go to next step.
  8. Turn ignition off. Check for continuity between ground and IMRC module 14-pin connector terminals No. 6. If there is continuity, repair short in wire between IMRC module and PCM. If there is no continuity, go to next step.
  9. With a fused jumper wire, connect PCM 32-pin harness connector "A" terminal No. 13 (A/T) or ECM 24-pin harness connector B terminal No. 15 (M/T) to ground. Check for continuity between ground and IMRC module 14-pin connector terminals No. 6. If there is continuity, substitute a known-good PCM and recheck. If the problem goes away, replace the original PCM. If there is no continuity, repair open in wire between IMRC module and PCM.
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