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Home >> Suzuki >> 2002 >> XL-7 Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 19 (Engine Controls - Self-Diagnostics - 3.2L) >> Malfunction Indicator Lights >> Reduced Power Lamp On Steady >> Diagnostic Procedure
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Diagnostic Procedure

WARNING: This page is about a different car, the 2002 Isuzu Rodeo Sport, 2002 Isuzu Rodeo, 2002 Isuzu Axiom, and 2002 Honda Passport. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform ON-BOARD DIAGNOSTIC II SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM. After performing OBD-II system check, go to next step.
  2. Turn ignition off. Disconnect Multi-Plexed Indicator Control Unit (MICU) White 16-pin harness connector. MICU is located on floor at rear of center console. Observe RPL indicator on instrument cluster. If RPL indicator is illuminated, go to next step. If RPL indicator is not illuminated, go to step  4.
  3. Turn ignition off. Disconnect instrument cluster Green 30-pin harness connector. To access instrument cluster harness connectors, remove instrument panel cluster. See appropriate INSTRUMENT PANELS article in ACCESSORIES & EQUIPMENT. Turn ignition on. Check for short to ground in White wire between instrument cluster and MICU. See WIRING DIAGRAMS article. If problem is found, repair as necessary. After repair is complete, see VERIFYING VEHICLE REPAIR  under SELF-DIAGNOSTIC SYSTEM. If no problem is found, go to next step.
  4. Replace MICU. After repair, on scan tool select LAMPS TEST under MISCELLANEOUS TESTS. On scan tool, command RPL indicator "OFF". If indicator turns off, use scan tool too verify repair. See VERIFYING VEHICLE REPAIR  under SELF-DIAGNOSTIC SYSTEM. If indicator does not turn off, go to next step.
  5. Turn ignition off. Disconnect PCM Blue 80-pin harness connector E-34. PCM is located at left rear of engine compartment, near air filter housing. Check for short circuit in Orange/Black wire (RPL light control) between MICU and PCM. See Figure. If problem is found, go to next step. If no problem is found, go to step  7.
  6. Repair RPL light control circuit. After repair is complete, see VERIFYING VEHICLE REPAIR  under SELF-DIAGNOSTIC SYSTEM.
  7. From scan tool, select LAMPS TEST under MISCELLANEOUS TESTS. On scan tool, command RPL indicator "OFF". If indicator turns off, use scan tool too verify repair. See VERIFYING VEHICLE REPAIR  under SELF-DIAGNOSTIC SYSTEM. If indicator does not turn off, go to next step.
  8. Turn ignition off. Disconnect PCM 80-pin harness connector E-35 (Red). PCM is located at left rear of engine compartment, near air filter housing. Check for open or short in Class 2 serial data circuits between PCM and Data Link Connector (DLC). See WIRING DIAGRAMS article. If problem is found, go to next step. If no problem is found, go to step  10.
  9. Find and repair open in Class 2 serial data circuits. After repair is complete, see VERIFYING VEHICLE REPAIR  under SELF-DIAGNOSTIC SYSTEM. After repair, repeat test starting in step  2.
  10. Replace and reprogram PCM. See POWERTRAIN CONTROL MODULE REPLACEMENT  under POWERTRAIN CONTROL MODULE. After repair, repeat OBD-II system check. See ON-BOARD DIAGNOSTIC II SYSTEM CHECK  under SELF-DIAGNOSTIC SYSTEM.
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