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DTC P063B:00 OR P063C:00 [INTEGRATED STARTER GENERATOR (ISG)]

id140202300100

Details On DTCs

Description	P063B:00: Integrated starter generator (ISG) (internal voltage sensor): Sensor characteristic malfunction P063C:00: Integrated starter generator (ISG) (internal voltage sensor): Low input
Detection condition	Determination conditions	P063B:00 •  The following conditions are met: ―  Difference (absolute value) between voltage at terminal 2A detected by main microcomputer in integrated starter generator (ISG) and voltage at terminal 2A detected by stator coil drive circuit control IC in integrated starter generator (ISG) is 5 V or more ―  Input signal voltage of voltage at terminal 2A detected by main microcomputer in integrated starter generator (ISG) is 0.1 V or more, or 4.9 V or less
		P063C:00 •  The following conditions are met: ―  Difference (absolute value) between voltage at terminal 2A detected by main microcomputer in integrated starter generator (ISG) and voltage at terminal 2A detected by stator coil drive circuit control IC in integrated starter generator (ISG) is 5 V or more ―  Input signal voltage of voltage at terminal 2A detected by main microcomputer in integrated starter generator (ISG) is low
	Preconditions	•  Stator coil drive circuit in integrated starter generator (ISG) is normal
	Malfunction determination period	•  0.5 s period
	Drive cycle	•  1
	Self test type	•  CMDTC self test, ODDTC self test
	Sensor used	•  Integrated starter generator (ISG)
Fail-safe function	•  Stops power supply from the Mazda M Hybrid battery and supplies power to the vehicle’s electrical devices (12 V power supply) from the 12 V battery. •  Inhibits the i-stop control. •  Inhibits the non-power generation control. •  Inhibits regenerative braking by the integrated starter generator (ISG). •  Inhibits motor assist control by the integrated starter generator (ISG).
Vehicle status when DTCs are output	•  If the vehicle continues to be driven while the DTC is detected, the 12 V battery will be depleted and the vehicle can no longer be driven. •  Inhibits the i-stop control.
Possible cause	•  Integrated starter generator (ISG) malfunction

System Wiring Diagram

Function Explanation (DTC Detection Outline)

Repeatability Verification Procedure

Integrated starter generator (ISG):

―  B-ISG_RPM

PCM:

―  ENG_RPM

―  VSS

―  ECT

Warning

•  When the M-MDS is used to observe monitor system status while driving, be sure to have another technician with you, or record the data in the M-MDS using the PID/DATA MONITOR AND RECORD capturing function and inspect later.

•  While performing this step, always operate the vehicle in a safe and lawful manner.

Note

•  Match the engine coolant temperature in the recorded snapshot data, the vehicle speed, and engine speed values to the best extent possible while driving the vehicle.

PID Item/Simulation Item Used In Diagnosis

Diagnostic Procedure

Step	Inspection	Results	Action
1	PURPOSE: RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION •  Record the snapshot data. Note •  Recording can be facilitated using the screen capture function of the PC.	—	Go to the next step.
2	PURPOSE: VERIFY WHETHER MALFUNCTION IS PRESENT OR PAST •  Perform the DTC inspection for the integrated starter generator (ISG). (See DTC INSPECTION.) •  Is DTC P063B:00 or P063C:00 a present malfunction?	Yes	Go to the next step.
		No	Go to Step 4.
3	PURPOSE: VERIFY WHETHER MALFUNCTION IS PRESENT OR PAST AGAIN •  Switch the ignition off. •  Switch the ignition ON (engine off or on) and wait for 10 s or more. •  Perform the DTC inspection for the integrated starter generator (ISG). (See DTC INSPECTION.) •  Is DTC P063B:00 or P063C:00 a present malfunction?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. •  If the malfunction recurs, replace the integrated starter generator (ISG). (See INTEGRATED STARTER GENERATOR (ISG) REMOVAL/INSTALLATION [SKYACTIV-G (E)].) (See INTEGRATED STARTER GENERATOR (ISG) REMOVAL/INSTALLATION [SKYACTIV-X 2.0].) Go to repair completion verification.
		No	Go to the next step.
4	PURPOSE: VERIFY INTEGRATED STARTER-GENERATOR (ISG) FOR MALFUNCTION DEPENDING ON REPEATABILITY •  Implement the repeatability verification procedure. (See Repeatability Verification Procedure.) •  Perform the DTC inspection for the integrated starter generator (ISG). (See DTC INSPECTION.) •  Is DTC P063B:00 or P063C:00 a present malfunction?	Yes	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. •  If the malfunction recurs, replace the integrated starter generator (ISG). (See INTEGRATED STARTER GENERATOR (ISG) REMOVAL/INSTALLATION [SKYACTIV-G (E)].) (See INTEGRATED STARTER GENERATOR (ISG) REMOVAL/INSTALLATION [SKYACTIV-X 2.0].) Go to repair completion verification.
		No	The system is normal. (Explain to the customer that a malfunction was detected temporarily, but the vehicle is currently normal.) Go to repair completion verification.
Repair completion verification	PURPOSE: 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.