DTC P0564 [13B-MSP]

DTC REFERENCE CHART

DTC P0564	Cruise control switch input circuit problem
DETECTION CONDITION	The PCM monitors the input voltage from the cruise control switch when the engine is running. If the input voltage is less than 3.0 V for more than 2 min , the PCM determines that there is a cruise control switch input circuit problem. Diagnostic support note This is a continuous monitor (other.) The MIL does not illuminate. FREEZE FRAME DATA is not available. The DTC is stored in the PCM memory.
POSSIBLE CAUSE	Connector or terminal malfunction Short to ground in wiring harness between cruise control switch terminal G and PCM terminal 1 AQ Cruise control switch malfunction PCM malfunction
Courtesy of MAZDA MOTORS CORP.
Courtesy of MAZDA MOTORS CORP.

DIAGNOSTIC PROCEDURE

STEP	INSPECTION		ACTION
1	VERIFY RELATED REPAIR INFORMATION AVAILABILITY Verify related Service Bulletins and/or on-line repair information availability. Is any related repair information available?	Yes	Perform repair or diagnosis according to the available repair information. If the vehicle is not repaired, go to the next step.
1		No	Go to the next step.
2	INSPECT CRUISE CONTROL SWITCH CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect the cruise control switch connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion.) Is there any malfunction?	Yes	Repair or replace the terminal, then go to Step 6.
2		No	Go to the next step.
3	INSPECT CRUISE CONTROL SWITCH SIGNAL CIRCUIT FOR SHORT TO GROUND Turn the ignition switch off. Inspect for continuity between cruise control switch terminal G (wiring harness-side) and body ground. Is there continuity?	Yes	Repair or replace the wiring harness for a possible short to ground, then go to Step 6.
3		No	Go to the next step.
4	INSPECT CRUISE CONTROL SWITCH Inspect the cruise control switch. (See CRUISE CONTROL SWITCH INSPECTION [13B-MSP] .) Is there any malfunction?	Yes	Replace the cruise control switch, then go to Step 6. (See AUDIO CONTROL SWITCH REMOVAL/INSTALLATION .)
4		No	Go to the next step.
5	INSPECT PCM CONNECTOR FOR POOR CONNECTION Turn the ignition switch off. Disconnect the PCM connector. Inspect for poor connection (such as damaged/pulled-out pins, corrosion.) Is there any malfunction?	Yes	Repair or replace the terminal, then go to the next step.
5		No	Go to the next step.
6	VERIFY TROUBLESHOOTING OF DTC P0564 COMPLETED Make sure to reconnect all disconnected connectors. Clear the DTC from the PCM memory using the M-MDS. Start the engine. Is the same DTC present?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [13B-MSP] .)
6		No	Go to the next step.
7	VERIFY AFTER REPAIR PROCEDURE Perform the "AFTER REPAIR PROCEDURE". (See AFTER REPAIR PROCEDURE [13B-MSP] .) Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [13B-MSP] .)
7		No	DTC troubleshooting completed.