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Home >> Mazda >> 2002 >> Tribute LX, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 60 (Engine Controls [Self-Diagnostics 2.3L]) >> Diagnostic Tests >> DTC P0564: Cruise Control Switch - Malfunction >> Diagnostic Procedure

Diagnostic Procedure

WARNING: This page is about a different car, the 2003 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify Related Repair Information Availability -  Check for related Service Bulletins and/or on-line repair information availability. If any related repair information is available, perform repair or diagnosis according to available repair information. If vehicle is not repaired, go to next step. If related repair information is not available, go to next step.
  2. Inspect Cruise Control Switch Connector For Poor Connection -  Turn ignition off. Disconnect cruise control switch 8-pin harness connector. Inspect for poor connection (such as damaged, pulled-out terminals, corrosion). If connections are okay, go to next step. If any malfunctions are present, repair or replace faulty terminal. After repair, go to step  6.
  3. Inspect Cruise Control Switch Signal Circuit For Short To GND -  Disconnect cruise control switch 8-pin harness connector and PCM harness connectors. Check for continuity between cruise control switch 8-pin harness terminal "B" (Red/Blue wire) and body GND. See Fig 1. If continuity is not present, go to next step. If continuity is present, repair short circuit to ground in Red/Blue wire between cruise control switch 8-pin harness connector terminal "B" and PCM 27-pin harness connector terminal "3P". See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. After repair, go to step  6.
    Fig 1: Identifying Cruise Control Switch Circuits & Harness Connector Terminals
    G00221513Courtesy of MAZDA MOTORS CORP.
  4. Inspect Cruise Control Switch Signal Circuit For Short To Power -  Turn ignition on, engine off. Inspect voltage between cruise control switch 8-pin harness connector terminal "B" (Red/Blue wire) and body GND. If voltage reading is less than one volt, go to next step. If voltage reading is not less than one volt, repair short circuit to power in Red/Blue wire between cruise control switch 8-pin harness connector terminal "B" and PCM 27-pin harness connector terminal "3P". After repair, go to step  6.
  5. Inspect Cruise Control Switch Operation -  Inspect cruise control switch. Refer to appropriate CRUISE CONTROL SYSTEMS article in ACCESSORIES & EQUIPMENT. If cruise control switch is okay, go to next step. If cruise control switch is faulty, replace cruise control switch. After repair, go to next step.
  6. Verify Trouble Shooting Of DTC P0564 Is Completed -  Reconnect all connectors. Clear DTCs. See CLEARING DIAGNOSTIC TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Drive vehicle using cruise control for 2 minutes or more. If same DTC is not present, go to next step. If same DTC is present, replace PCM. For PCM removal and installation, see POWERTRAIN CONTROL MODULE under COMPUTERIZED ENGINE CONTROLS in REMOVAL & INSTALLATION article. After repair, go to next step.
  7. Verify After Repair Procedure -  Using scan tool, perform After Repair Procedure. See AFTER REPAIR PROCEDURE . If any DTCs are present, go to appropriate DTC inspection. Refer to DIAGNOSTIC TROUBLE CODE DEFINITIONS . If no DTCs are present, trouble shooting is complete.
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