DTC P0506:00 [MZR 2.3 DISI Turbo]

id0102g4705000

DTC P0506:00

IAC system RPM lower than expected

DETECTION CONDITION

•  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 72.3 kPa {542 mmHg, 21.3 inHg} or the intake air temperature is below –10 °C {14 °F}, the PCM cancels the diagnosis of the DTC P0506:00.

Diagnostic support note

•  This is a continuous monitor (CCM).

•  The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM.

•  PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle.

•  FREEZE FRAME DATA (Mode 2)/Snapshot data is available.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  A/C relay control circuit malfunction

•  Electronic throttle control system malfunction

•  Purge solenoid valve malfunction

•  Air cleaner element clogged

•  Air intake passage clogged

•  Generator malfunction

•  Low engine compression (over capacity of blow-by gas)

•  PCM malfunction

DTC P0506:00	IAC system RPM lower than expected
DETECTION CONDITION	• 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 72.3 kPa {542 mmHg, 21.3 inHg} or the intake air temperature is below –10 °C {14 °F}, the PCM cancels the diagnosis of the DTC P0506:00. Diagnostic support note • This is a continuous monitor (CCM). • The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. • PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. • FREEZE FRAME DATA (Mode 2)/Snapshot data is available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• A/C relay control circuit malfunction • Electronic throttle control system malfunction • Purge solenoid valve malfunction • Air cleaner element clogged • Air intake passage clogged • Generator malfunction • Low engine compression (over capacity of blow-by gas) • PCM malfunction

Diagnostic procedure

STEP	INSPECTION		ACTION
1	VERIFY FREEZE FRAME DATA (MODE 2)/SNAPSHOT DATA HAS BEEN RECORDED • Has the FREEZE FRAME DATA (Mode 2)/snapshot data been recorded?	Yes	Go to the next step.
1		No	Record the FREEZE FRAME DATA (Mode 2)/snapshot data on the 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.
2		No	Go to the next step.
3	VERIFY RELATED PENDING CODE AND/OR DTC • Switch the ignition to off, then to ON (engine off). • Perform the Pending Trouble Code Access Procedure and DTC Reading Procedure. (See ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI Turbo].) • Are any other PENDING CODEs and/or DTCs present?	Yes	Go to the applicable PENDING CODE or DTC inspection. (See DTC TABLE [MZR 2.3 DISI Turbo].)
3		No	Go to the next step.
4	INSPECT A/C MAGNET CLUTCH OPERATION • Turn the blower motor switch off. • Is the magnet clutch still on?	Yes	Perform the symptom troubleshooting “NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY”. (See NO.24 A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY [MZR 2.3 DISI Turbo].)
4		No	Go to the next step.
5	INSPECT ELECTRONIC THROTTLE CONTROL SYSTEM RELATED SENSOR • Inspect the following: ― APP sensor (See ACCELERATOR PEDAL POSITION (APP) SENSOR INSPECTION [MZR 2.3 DISI Turbo].) ― TP sensor (See THROTTLE POSITION (TP) SENSOR INSPECTION [MZR 2.3 DISI Turbo].) • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 11. (See ACCELERATOR PEDAL REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].) (See INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].)
5		No	Go to the next step.
6	INSPECT PURGE SOLENOID VALVE • Inspect the purge solenoid valve. (See PURGE SOLENOID VALVE INSPECTION [MZR 2.3 DISI Turbo].) • Is there any malfunction?	Yes	Replace the purge solenoid valve, then go to Step 11. (See PURGE SOLENOID VALVE REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].)
6		No	Go to the next step.
7	INSPECT AIR CLEANER ELEMENT • Remove the air cleaner element with the engine running. • Does the engine speed increase?	Yes	Clean or replace the air cleaner element, then go to Step 11.
7		No	Go to the next step.
8	INSPECT THROTTLE BODY PASSAGE • Visually inspect the throttle body passage. • Is the throttle body passage clogged?	Yes	Clean or replace the throttle body passage, then go to Step 11.
8		No	Go to the next step.
9	INSPECT GENERATOR • Inspect the generator. (See GENERATOR INSPECTION [MZR 2.3 DISI Turbo].) • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 11.
9		No	Go to the next step.
10	INSPECT ENGINE COMPRESSION • Inspect the engine compression. (See COMPRESSION INSPECTION [MZR 2.3 DISI Turbo].) • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to the next step.
10		No	Go to the next step.
11	VERIFY DTC TROUBLESHOOTING COMPLETED • Make sure to reconnect all disconnected connectors. • Start the engine. • Clear the DTC from the PCM memory using the M-MDS. (See AFTER REPAIR PROCEDURE [MZR 2.3 DISI Turbo].) • Depress the brake pedal for 14 s or more. • Perform the Pending Trouble Code Access Procedure. (See ON-BOARD DIAGNOSTIC TEST [MZR 2.3 DISI Turbo].) • Is the PENDING CODE for this DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR 2.3 DISI Turbo].) Go to the next step.
11		No	Go to the next step.
12	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZR 2.3 DISI Turbo].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZR 2.3 DISI Turbo].)
12		No	DTC troubleshooting completed.