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DTC P0506:00 [PCM (SKYACTIV-G)]

DTC P0506:00 [PCM (SKYACTIV-G)]

SM2334531


id0102t4705000



Outline

System malfunction location

IAC system RPM lower than expected

Detection condition
• The actual idle speed is lower than expected by 100 rpm for 14 s, when the brake pedal is depressed (brake switch is on).

Note
• If the atmospheric pressure is less than 72.2 kPa {0.736 kgf/cm2, 10.5 psi} or the intake air temperature is below −10 °C {14 °F}, the PCM cancels the diagnosis of DTC P0506:00.
Fail-safe
• Not applicable
Possible cause
• A/C magnetic clutch malfunction
• Drive-by-wire control system malfunction
• Malfunction in injection amount measurement system (refer to DTC P0101:00)
• Purge solenoid valve malfunction
• Air cleaner element restricted
• Throttle body passage blockage
• Engine malfunction
― Insufficient engine compression
• Generator control circuit malfunction
• PCM malfunction
System wiring diagram
• Not applicable
Connector diagram
• Not applicable



Diagnostic Procedure

Step

Inspection

Results

Action

1
IDENTIFY TRIGGER DTC FOR FREEZE FRAME DATA
• Is the DTC P0506:00 on freeze frame data?
Yes
Go to the next step.
No
Go to the troubleshooting procedure for DTC on freeze frame data.
2
RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
• Record the freeze frame data/snapshot data.

Note
• Recording can be facilitated using the screen capture function of the PC.
Go to the next step.
3
VERIFY RELATED REPAIR INFORMATION OR SERVICE INFORMATION AVAILABILITY
• Verify related Service Bulletins, on-line repair information, or Service Information availability.
• Is any related Information available?
Yes
Perform repair or diagnosis according to the available information.
• If the vehicle is not repaired, go to the next step.
No
Go to the next step.
4
INSPECT FOR OTHER RELATED DTCs
• Perform the DTC inspection for the PCM. (See DTC INSPECTION.)
• Are any other DTCs displayed?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
No
Go to the next step.
5
INSPECT A/C MAGNETIC CLUTCH OPERATION
• Turn the A/C switch off.
• Is the magnetic clutch still on?
Yes
Perform the symptom troubleshooting “A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY”.
No
Go to the next step.
6
INSPECT DRIVE-BY-WIRE CONTROL SYSTEM MALFUNCTION
• Perform the Drive-by-wire Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [SKYACTIV-G (US)].)
• Is there any malfunction?
Yes
Repair or replace the malfunctioning location and perform the repair completion verification.
No
Go to the next step.
7
INSPECT PURGE SOLENOID VALVE
• Is there any malfunction?
Yes
Repair or replace the malfunctioning location and perform the repair completion verification.
No
Go to the next step.
8
INSPECT AIR CLEANER ELEMENT FOR MALFUNCTION
• Does the engine speed increase?
Yes
Clean or replace the air cleaner element and perform the repair completion verification.
No
Go to the next step.
9
INSPECT THROTTLE BODY PASSAGE
• Visually inspect the throttle body passage.
• Is the throttle body passage dirty and/or restricted?
Yes
Clean or replace the throttle body passage and perform the repair completion verification.
No
Go to the next step.
10
INSPECT ENGINE COMPRESSION
• Are compression pressures within specification?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
11
INSPECT GENERATOR CONTROL CIRCUIT FOR SHORT TO POWER SUPPLY
• Apply the electrical load (such as blower fan, rear window defogger, or headlight).
• Does the engine speed increase?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification.
Repair completion verification 1
VERIFY THAT VEHICLE IS REPAIRED
• Install/connect the part removed/disconnected during the troubleshooting procedure.
• Clear the DTC recorded in the memory. (See CLEARING DTC.)
• Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
― Start the engine and warm it up completely.
― Depress the brake pedal for 14 s or more.
• Perform the DTC inspection for the PCM. (See DTC INSPECTION.)
• Is the same Pending DTC present?
Yes
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
No
Go to the next step.
Repair completion verification 2
VERIFY IF OTHER DTCs DISPLAYED
• Perform the DTC inspection. (See DTC INSPECTION.)
• Are any other DTCs displayed?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
No
DTC troubleshooting completed.