DTC P0A0F:00 [MZR 2.0 DISI i-stop]

id0102d4950400

DTC P0A0F:00

Engine failed to start

DETECTION CONDITION

•  When any of the following conditions is met:

―  When the engine should restart after it is stopped by the i-stop control, it does not start even though it is cranked for 3 s or more.

―  When the engine should restart after it is stopped by the i-stop control, it does not crank.

Diagnostic support note

•  This is a continuous monitor (other).

•  The check engine light does not illuminate.

•  FREEZE FRAME DATA (Mode 2)/Snapshot data is not available.

•  The DTC is stored in the PCM memory.

POSSIBLE CAUSE

•  Related parts malfunction

―  Starter relay malfunction

―  Sub-battery malfunction

―  Malfunction between starter relay and PCM, or poor connector contact

―  Starter malfunction

•  Piston stop position malfunction during idling stop

―  Crankshaft position sensor signal malfunction

―  Throttle value operation malfunction (drive-by-wire control malfunction)

―  Generator control malfunction

―  Intake air system related malfunction (air suction, vacuum hose breakage)

―  EGR control malfunction

―  Purge control malfunction

―  Generator drive belt wear

―  Engine starting system malfunction

•  Mechanical (engine) malfunction

―  Valve timing inappropriate

―  Variable valve timing system malfunction

•  PCM malfunction

DTC P0A0F:00	Engine failed to start
DETECTION CONDITION	• When any of the following conditions is met: ― When the engine should restart after it is stopped by the i-stop control, it does not start even though it is cranked for 3 s or more. ― When the engine should restart after it is stopped by the i-stop control, it does not crank. Diagnostic support note • This is a continuous monitor (other). • The check engine light does not illuminate. • FREEZE FRAME DATA (Mode 2)/Snapshot data is not available. • The DTC is stored in the PCM memory.
POSSIBLE CAUSE	• Related parts malfunction ― Starter relay malfunction ― Sub-battery malfunction ― Malfunction between starter relay and PCM, or poor connector contact ― Starter malfunction • Piston stop position malfunction during idling stop ― Crankshaft position sensor signal malfunction ― Throttle value operation malfunction (drive-by-wire control malfunction) ― Generator control malfunction ― Intake air system related malfunction (air suction, vacuum hose breakage) ― EGR control malfunction ― Purge control malfunction ― Generator drive belt wear ― Engine starting system malfunction • Mechanical (engine) malfunction ― Valve timing inappropriate ― Variable valve timing system malfunction • PCM malfunction

Diagnostic Procedure

STEP	INSPECTION		ACTION
1	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.
1		No	Go to the next step.
2	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 2.0 DISI i-stop].) • Is the PENDING CODE/DTC P1260:00 also present?	Yes	Go to the applicable PENDING CODE or DTC inspection. (See DTC P1260:00 [MZR 2.0 DISI i-stop].)
2		No	Go to the next step.
3	INSPECT SUB BATTERY • Inspect the sub battery. (See BATTERY INSPECTION [MZR 2.0 DISI i-stop].) • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 16. (See BATTERY RECHARGING [MZR 2.0 DISI i-stop].) (See BATTERY REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop])
3		No	Go to the next step.
4	INSPECT FOR A MALFUNCTION RELATED INABILITY TO START ENGINE • Start the engine. • Does the engine start normally?	Yes	Go to the next step.
4		No	Perform the symptom troubleshooting “NO.3 WILL NOT CRANK”. (See NO.3 WILL NOT CRANK [MZR 2.0 DISI i-stop].)
5	DETERMINE IF MALFUNCTION IS CAUSED BY ROUGH IDLING OR A PISTON-STOP POSITION CONTROL MALFUNCTION • Start the engine and warm it up completely. • Is the idle speed stabilized?	Yes	Go to the next step.
5		No	Perform the symptom troubleshooting “NO.4 HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK”. (See NO.4 HARD TO START/LONG CRANK/ERRATIC START/ERRATIC CRANK [MZR 2.0 DISI i-stop].)
6	INSPECT CKP SENSOR SIGNAL • Verify the CKP sensor signal using the oscilloscope. (See PCM INSPECTION [MZR 2.0 DISI i-stop].) • Is there any malfunction?	Yes	Inspect the CKP sensor pulse wheel. • If there is any malfunction: ― Replace the crankshaft pulley. (See FRONT OIL SEAL REPLACEMENT [MZR 2.0 DISI i-stop].) • If there is no malfunction: ― Replace the CKP sensor. (See CRANKSHAFT POSITION (CKP) SENSOR REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) Go to Step 16.
6		No	Go to the next step.
7	INSPECT DRIVE-BY-WIRE CONTROL SYSTEM OPERATION • Perform the Drive-by-wire Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR 2.0 DISI i-stop].) • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 16.
7		No	Go to the next step.
8	INSPECT GENERATOR CONTROL SYSTEM OPERATION • Start the engine and warm it up completely. • Access the ALTT V PID using the M-MDS. (See ON-BOARD DIAGNOSTIC TEST [MZR 2.0 DISI i-stop].) • Does the PID value increase when the rear window defroster, headlights, and blower motor are operated simultaneously?	Yes	Go to the next step.
8		No	Inspect the generator. (See GENERATOR INSPECTION [MZR 2.0 DISI i-stop].) • If there is any malfunction: ― Repair or replace the malfunctioning part according to the inspection results, then go to Step 16.
9	INSPECT VACUUM HOSE CONNECTION • Inspect the vacuum hose routine. (See INTAKE-AIR SYSTEM VACUUM HOSE ROUTING DIAGRAM [MZR 2.0 DISI i-stop].) • Are vacuum hoses routines properly?	Yes	Go to the next step.
9		No	Reconnect the vacuum hose, then go to Step 16. (See INTAKE-AIR SYSTEM VACUUM HOSE ROUTING DIAGRAM [MZR 2.0 DISI i-stop].)
10	INSPECT INTAKE-AIR SYSTEM FOR AIR LEAKAGE • Inspect for leakage in intake-air system. • Is there any leakage?	Yes	Repair or replace the malfunctioning parts according to the inspection results, then go to Step 16.
10		No	Go to the next step.
11	INSPECT EGR VALVE OPERATION • Perform the EGR Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR 2.0 DISI i-stop].) • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 16.
11		No	Go to the next step.
12	INSPECT PURGE CONTROL SYSTEM OPERATION • Perform the Purge Control System Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR 2.0 DISI i-stop].) • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 16.
12		No	Go to the next step.
13	INSPECT GENERATOR DRIVE BELT • Inspect the generator drive belt. (See DRIVE BELT INSPECTION [MZR 2.0 DISI i-stop].) • Is there any malfunction?	Yes	Replace the drive belt, then go to Step 16. (See DRIVE BELT REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)
13		No	Go to the next step.
14	INSPECT ENGINE STARTING SYSTEM OPERATION • Inspect the starter. (See STARTER INSPECTION [MZR 2.0 DISI i-stop].) • Is there any malfunction?	Yes	Replace the starter, then go to Step 16. (See STARTER REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].)
14		No	Go to the next step.
15	INSPECT VARIABLE VALVE TIMING CONTROL SYSTEM OPERATION • Perform the Variable Valve Timing Control System Operation Inspection. (See ENGINE CONTROL SYSTEM OPERATION INSPECTION [MZR 2.0 DISI i-stop].) • Is there any malfunction?	Yes	Repair or replace the malfunctioning part according to the inspection results, then go to Step 16.
15		No	Go to the next step.
16	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 [MZR 2.0 DISI i-stop].) • Start the engine and warm it up completely. • Stop the engine by operating the i-stop function. • Restart the engine. • Perform the KOEO or KOER self test. (See KOEO/KOER SELF TEST [MZR 2.0 DISI i-stop].) • Is the same DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the PCM. (See PCM REMOVAL/INSTALLATION [MZR 2.0 DISI i-stop].) Go to the next step.
16		No	Go to the next step.
17	VERIFY AFTER REPAIR PROCEDURE • Perform the “AFTER REPAIR PROCEDURE”. (See AFTER REPAIR PROCEDURE [MZR 2.0 DISI i-stop].) • Are any DTCs present?	Yes	Go to the applicable DTC inspection. (See DTC TABLE [MZR 2.0 DISI i-stop].)
17		No	DTC troubleshooting completed.