DTC P0564 [L8, LF]

id0102b1808900

DTC P0564 | Cruise control switch circuit malfunction
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DETECTION CONDITION | • The PCM monitors the cruise control switch signal. If the PCM detects that any one of following switches (ON OFF, CANCEL, SET/-, 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 illuminate. • FREEZE FRAME DATA (Mode 2/Mode 12) is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE | • Clock spring connector or terminals (PCM-side/cruise control switch-side) malfunction • Clock spring malfunction • Short to ground in wiring harness clock spring connector (PCM-side) terminal B and PCM terminal 1AQ • PCM connector or terminals malfunction • Short to power supply in wiring harness clock spring connector (PCM-side) terminal B and PCM terminal 1AQ • Cruise control switch malfunction • PCM malfunction

Diagnostic procedure

STEP | INSPECTION | ACTION
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1 | VERIFY FREEZE FRAME DATA (MODE 12) AND DIAGNOSTIC MONITORING TEST RESULTS HAVE BEEN RECORDED • Have the FREEZE FRAME DATA (Mode 12) and DIAGNOSTIC MONITORING TEST RESULTS (other related) been recorded? | Yes | Go to the next step.
No | Record the FREEZE FRAME DATA (Mode 12) and DIAGNOSTIC MONITORING TEST RESULTS on repair order, then go to the next step.
2 | VERIFY RELATED SERVICE INFORMATION AVAILABILITY • Verify related Service Information availability. • Is any related Service Information available? | Yes | Perform repair or diagnosis according to the available Service Information. • If the vehicle is not repaired, go to the next step.
No | Go to the next step.
3 | INSPECT CLOCK SPRING CONNECTOR AND TERMINALS (PCM-SIDE/CRUISE CONTROL SWITCH-SIDE) • Turn the ignition switch off. • Disconnect the clock spring connector (PCM-side/cruise control switch-side). • Inspect for poor connection (such as damaged, pulled-out terminals, corrosion). • Is there any malfunction? | Yes | Repair or replace the connector or terminals, then go to Step 9.
No | Go to the next step.
4 | INSPECT CLOCK SPRING • Inspect the clock spring. (See CLOCK SPRING INSPECTION.) • Is there any malfunction? | Yes | Replace the clock spring, then go to Step 9. (See CLOCK SPRING REMOVAL/INSTALLATION.)
No | Go to the next step.
5 | INSPECT CRUISE CONTROL SWITCH SIGNAL CIRCUIT FOR SHORT TO GROUND • Clock spring connector is disconnected. • Inspect for continuity between clock spring connector (PCM-side) terminal B (wiring harness-side) and body ground. • Is there continuity? | Yes | If the short to ground circuit could be detected: • Repair or replace the wiring harness for a possible short to ground. If the short to ground circuit could not be detected: • Replace the PCM (short to ground in PCM internal circuit). (See PCM REMOVAL/INSTALLATION [L8, LF].) Go to Step 9.
No | Go to the next step.
6 | INSPECT PCM CONNECTOR AND TERMINALS • Disconnect the PCM connector. • Inspect for poor connection (such as damaged, pulled-out terminals, corrosion). • Is there any malfunction? | Yes | Repair or replace the connector or terminals, then go to Step 9.
No | Go to the next step.
7 | INSPECT CRUISE CONTROL SWITCH SIGNAL CIRCUIT FOR SHORT TO POWER SUPPLY • Clock spring and PCM connectors are disconnected. • Turn the ignition switch to the ON position (engine off). • Measure the voltage between clock spring connector (PCM-side) terminal B (wiring harness-side) and body ground. • Is there any voltage? | Yes | Repair or replace the wiring harness for a possible short to power supply, then go to Step 9.
No | Go to the next step.
8 | INSPECT CRUISE CONTROL SWITCH OPERATION • Inspect the cruise control switch. (See CRUISE CONTROL SWITCH INSPECTION [L8, LF].) • Is there any malfunction? | Yes | Replace the cruise control switch, then go to the next step. (See AUDIO CONTROL SWITCH REMOVAL/INSTALLATION.)
No | Go to the next step.
9 | VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [L8, LF].) • 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 [L8, LF].)
No | Go to the next step.
10 | VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [L8, LF].) • Are any DTCs present? | Yes | Go to the applicable DTC troubleshooting. (See DTC TABLE [L8, LF].)
No | DTC troubleshooting completed.