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2008 - MX-5 - Engine

DTC P0564 [LF]



DTC P0564

Cruise control switch circuit malfunction

DETECTION CONDITION

  • The PCM monitors the cruise control switch signal at PCM terminal 1AQ. If the PCM detects that any one of following switches (ON OFF, SET/-, SET/COAST, RES/+) remains on for 2 min, the PCM determines that the cruise control switch circuit has a malfunction.

    Diagnostic support note
  • This is a continuous monitor (Other).

  • The MIL does not comes on.

  • PENDING CODE is available if the PCM detects the above malfunction condition.

  • FREEZE FRAME DATA is available.

  • The DTC is stored in the PCM memory.

POSSIBLE CAUSE

  • Cruise control switch malfunction

  • Connector or terminal malfunction

  • Short to power circuit in wiring from cruise control switch terminal B and PCM terminal 1AQ

  • Short to ground circuit in wiring from cruise control switch terminal B and PCM terminal 1AQ

  • PCM malfunction


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.

No

Go to the next step.

2

INSPECT CRUISE CONTROL SWITCH CONNECTOR FOR POOR CONNECTION
  • Turn the ignition switch off.

  • Inspect for poor connection (such as damaged, pulled-out terminals, corrosion).

  • Is there any malfunction?

Yes

Repair or replace the terminal, then go to Step 6.

No

Go to the next step.

3

INSPECT CRUISE CONTROL SWITCH SIGNAL CIRCUIT FOR SHORT TO GROUND
  • Disconnect cruise control switch and PCM connectors.

  • Inspect for continuity between cruise control switch terminal B (wiring harness-side) and body ground.

  • Is there continuity?

Yes

Repair or replace short to ground, then go to Step 6.

No

Go to the next step.

4

INSPECT CRUISE CONTROL SWITCH SIGNAL CIRCUIT FOR SHORT TO POWER
  • Turn the ignition switch to the ON position (Engine off).

  • Inspect the voltage between cruise control switch terminal B (wiring harness-side) and body ground.

  • Is the voltage below 1.0 V?

Yes

Go to the next step.

No

Repair or replace short to power supply, then go to Step 6.

5

INSPECT CRUISE CONTROL SWITCH OPERATION

Yes

Go to the next step.

No

Replace the cruise control switch, then 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.

  • Drive the vehicle with cruise control 2 min. or more.

  • Is the same DTC present?

Yes

Replace the PCM, then go to the next step.

(See PCM REMOVAL/INSTALLATION [LF].)

No

Go to the next step.

7

VERIFY AFTER REPAIR PROCEDURE

Yes

Go to the applicable DTC inspection.

(See DTC TABLE [LF].)

No

Troubleshooting completed.




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