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DTC P1B02:00 [PCM (SKYACTIV-X)]

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Note

•  To determine the malfunctioning part, proceed with the diagnostics from "Function Inspection Using M-MDS".

Details On DTCs

Description	CPU in Mazda M Hybrid battery: Input signal voltage malfunction Analog IC in Mazda M Hybrid battery: Function malfunction Analog IC in Mazda M Hybrid battery: Input signal voltage malfunction Mazda M Hybrid battery: RAM abnormality Mazda M Hybrid battery: Memory check sum error Mazda M Hybrid battery: CPU abnormality Mazda M Hybrid battery: Non-volatile RAM error Communication error (detected by analog IC) between analog IC and CPU Communication error (detected by CPU) between analog IC and CPU Data reading or data verification error in analog IC in Mazda M Hybrid battery Mazda M Hybrid battery terminal 1D voltage detection sensor: Low input Mazda M Hybrid battery terminal 1D voltage detection sensor: High input Mazda M Hybrid battery (FET temperature sensor): Low input Mazda M Hybrid battery (FET temperature sensor): High input
Detection condition	Determination conditions	•  The PCM detects that the Mazda M Hybrid battery stores the following DTCs. ―  P0A1F:09 ―  P0A1F:52 ―  P0A1F:96 ―  P1B00:00 ―  P1B00:44 ―  P1B01:00 ―  P1B02:F0 ―  P1B02:F1 ―  P1B02:F2 ―  P1B02:F3 ―  P1B02:F4 ―  P1B02:F5 ―  P1B02:F6 ―  P1B02:F7 ―  P1B02:F8 ―  P1B02:F9 ―  P1B02:FA ―  P1B02:FB ―  P1B02:FC ―  P1B02:FD ―  P1B02:FE ―  P1B02:FF ―  P1B03:00 ―  P1B04:33 ―  P1B04:81 ―  P1B04:96 ―  P1B07:16 ―  P1B07:17 ―  P1B10:00 ―  P1B11:00
	Preconditions	•  Not applicable
	Malfunction determination period	•  Not applicable
	Drive cycle	•  1
	Self test type	•  CMDTC self test
	Sensor used	•  Mazda M Hybrid battery
Fail-safe function	•  Inhibits engine-stop by operating the i-stop function.*1 •  Inhibits the regenerative braking control. •  Inhibits the motor assist control. •  Stops power generation by integrated starter generator (ISG). •  Stops power supply by step-down circuit in DC-DC converter (Mazda M Hybrid). •  Turns off contactor for Mazda M Hybrid battery and supply power to vehicle electrical devices (12 V power supply) from battery. *1: If P1B02:00 is stored during engine stop by i-stop control, restart the engine using the starter.
Vehicle status when DTCs are output	•  Refer to the [Vehicle status when DTCs are output] of each DTC for the Mazda M Hybrid battery.
Possible cause	•  DTCs are stored in the Mazda M Hybrid battery. Note •  If the Mazda M Hybrid battery stores a DTC, the PCM stores the same DTC or similar. •  If the PCM stores a DTC even though the Mazda M Hybrid battery does not store a DTC, clear the DTC as it was for a past malfunction, and then complete the repair.

System Wiring Diagram

Function Explanation (DTC Detection Outline)

Repeatability Verification Procedure

1.  Switch the ignition off.

2.  Switch the ignition ON (engine off) and wait for 10 s or more.

PID Item/Simulation Item Used In Diagnosis

Function Inspection Using M-MDS

Step	Inspection	Results	Action
1	PURPOSE: 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.
2	PURPOSE: 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.
3	PURPOSE: VERIFY Mazda M Hybrid BATTERY DTCs •  Perform the DTC inspection for the Mazda M Hybrid battery. (See DTC INSPECTION.) •  Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC TABLE [Mazda M Hybrid BATTERY].)
		No	Go to Troubleshooting Diagnostic Procedure to perform the repair completion verification.

Troubleshooting Diagnostic Procedure

―  Verify that primary malfunction is resolved and there are no other malfunctions.

Step	Inspection	Results	Action
Repair completion verification 1	PURPOSE: 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. ―  Implement the repeatability verification procedure. (See Repeatability Verification Procedure.) •  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. (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 PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION [SKYACTIV-X 2.0].)
		No	Go to the next step.
Repair completion verification 2	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.