DTC P0AA2:00 [PCM (e-SKYACTIV)]

id300202030600

Warning

<<High voltage>>

•  If the necessary measures are not taken before servicing an electric vehicle, it could cause electrical shock and result in serious injury or, in the worst case, death. Before servicing the electric vehicle, refer to [HIGH VOLTAGE SERVICE CAUTIONS] in the general information and implement the necessary measures. (See HIGH VOLTAGE SERVICE CAUTIONS.)

Outline

System malfunction location	High voltage contactor (+) system: Stuck off
Detection condition	•  The PCM detects that the high voltage contactor positive system is stuck off.
Fail-safe	•  Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table". (See DTC TABLE [PCM (e-SKYACTIV)].)
Possible cause	•  Inverter malfunction •  PCM connector or terminals malfunction •  Common connector (C-68) connector or terminals malfunction •  Open circuit in high voltage contactor (+) control circuit •  Short to ground in high voltage contactor (+) control circuit •  High voltage cable malfunction ―  Open circuit in DC-DC converter high voltage cable ―  Short circuit between (+) side circuit and (-) side circuit •  DC-DC converter malfunction •  PTC heater malfunction •  Junction box No.3 malfunction •  Onboard charger malfunction •  Electric compressor malfunction •  PCM malfunction High voltage battery malfunction •  High voltage battery internal parts malfunction

Diagnostic Procedure

Warning

<<High voltage>>

•  If necessary measures such as wearing the correct protective gear are not taken when inspecting or removing/installing the high voltage parts, it could cause electrical shock and result in serious injury or, in the worst case, death.

•  Before inspecting or removing/installing the high voltage parts, refer to [HIGH VOLTAGE SERVICE CAUTIONS] in the general information and [High Voltage Part Inspection and Removal/Installation Notes] of the high voltage system service cautions and implement the necessary measures and preparations. (See HIGH VOLTAGE SERVICE CAUTIONS.) (See HIGH VOLTAGE SYSTEM SERVICE CAUTIONS.)

Step	Inspection	Results	Action
1	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	VERIFY DRIVE MOTOR CONTROL MODULE DTCs •  Perform the DTC inspection for the drive motor control module. (See DTC INSPECTION.) •  Is DTC P0A78:00 a present malfunction?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting. (See DTC P0A78:00 [DRIVE MOTOR CONTROL MODULE (e-SKYACTIV)].)
		No	Go to the next step.
3	INSPECT PCM CONNECTOR FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See DTC INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification 1.
4	INSPECT COMMON CONNECTOR (C-68) FOR MALFUNCTION •  Inspect the applicable connector and terminal. (See CONNECTOR INSPECTION.) •  Are the connector and terminal normal?	Yes	Go to the next step.
		No	If there is a malfunction with common connector (C-68) (high voltage battery side): •  Replace the high voltage battery, then go to the repair completion verification 1. (See HIGH VOLTAGE BATTERY REMOVAL/INSTALLATION.) If there is a malfunction with common connector (C-68) (vehicle wiring harness side): •  Repair or replace the malfunctioning location and perform the repair completion verification 1.
5	INSPECT HIGH VOLTAGE CONTACTOR (+) CONTROL CIRCUIT FOR OPEN CIRCUIT •  Inspect the applicable circuit for open circuit. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification 1.
6	INSPECT HIGH VOLTAGE CONTACTOR (+) CONTROL CIRCUIT FOR SHORT TO GROUND •  Inspect the applicable circuit for short to ground. (See CIRCUIT INSPECTION.) •  Is the circuit normal?	Yes	Go to the next step.
		No	Repair or replace the malfunctioning location and perform the repair completion verification 1.
7	INSPECT DC-DC CONVERTER HIGH VOLTAGE CABLE (+) FOR OPEN CIRCUIT Warning <<High voltage>> •  Wear insulated gloves when working on a high voltage system. •  Remove the service plug. (See SERVICE PLUG REMOVAL/INSTALLATION.) •  After 10 min have elapsed after removing the service plug, perform a zero voltage verification at the voltage detection point of the junction box to verify that there is no electrical charge in the high voltage circuit. •  Disconnect the following high voltage cable connectors. ―  DC-DC converter high voltage cable connector (DC-DC converter side) a30zzw00007025 ―  3002-229C connector a30zzw00007030	Yes	Go to the next step.
		No	Wear insulating gloves, replace the DC-DC converter high voltage cable, and then perform the repair completion verification.
8	VERIFY IF MALFUNCTION IS CAUSED BY SHORT CIRCUIT IN HIGH VOLTAGE CABLE BETWEEN JUNCTION BOX NO.3 AND DC-DC CONVERTER Warning <<High voltage>> •  Wear insulated gloves when working on a high voltage system. •  Verify that the following connectors are disconnected. ―  DC-DC converter high voltage cable connector (DC-DC converter side) a30zzw00007025 ―  3002-229C connector a30zzw00007030 Warning <<High voltage>> •  For the insulation resistance tester usage, refer to the insulation resistance tester instruction manual. Otherwise, electrocution could result from the voltage generated by the insulation resistance tester. Caution <<High voltage>> •  Use an insulation resistance tester using a testing range of 500 V or less because the voltage applied by the insulation resistance tester may damage the parts.	Yes	Go to the next step.
	•  Wear insulating gloves and measure the resistances between the following terminals using the insulation resistance tester (500 V range). ―  3002-229C connector (high voltage wiring harness side) •  Between terminal 3A and terminal 3D a30zzw00007110 •  Is the measured value 100 MΩ or more?	No	Wear insulating gloves, replace the DC-DC converter high voltage cable, and then perform the repair completion verification.
9	VERIFY IF MALFUNCTION IS CAUSED BY SHORT CIRCUIT IN HIGH VOLTAGE CABLE Warning <<High voltage>> •  Wear insulated gloves when working on a high voltage system. •  Disconnect both ends of the high voltage cable (junction box No.3 side and high voltage battery side). (See HIGH VOLTAGE CABLE REMOVAL/INSTALLATION.) Warning <<High voltage>> •  For the insulation resistance tester usage, refer to the insulation resistance tester instruction manual. Otherwise, electrocution could result from the voltage generated by the insulation resistance tester. Caution <<High voltage>> •  Use an insulation resistance tester using a testing range of 500 V or less because the voltage applied by the insulation resistance tester may damage the parts. •  Wear insulating gloves and measure the resistances between the following terminals using the insulation resistance tester (500 V range). ―  High voltage cable (junction box No.3 side) •  Between terminal 1A and terminal 2A a30zzw00007029 •  Is the measured value 100 MΩ or more?	Yes	Go to the next step.
		No	Replace the high voltage cable, then go to the repair completion verification 1. (See HIGH VOLTAGE CABLE REMOVAL/INSTALLATION.)
10	VERIFY IF MALFUNCTION IS CAUSED BY SHORT CIRCUIT IN HIGH VOLTAGE CABLE BETWEEN JUNCTION BOX NO.3 AND ELECTRIC COMPRESSOR Warning <<High voltage>> •  Wear insulated gloves when working on a high voltage system. •  Disconnect the following high voltage cable connectors. ―  Electric compressor high voltage cable connector a30zzw00007026 ―  3002-229D connector a30zzw00007031 Warning <<High voltage>> •  For the insulation resistance tester usage, refer to the insulation resistance tester instruction manual. Otherwise, electrocution could result from the voltage generated by the insulation resistance tester. Caution <<High voltage>> •  Use an insulation resistance tester using a testing range of 500 V or less because the voltage applied by the insulation resistance tester may damage the parts.	Yes	Go to the next step.
	•  Wear insulating gloves and measure the resistances between the following terminals using the insulation resistance tester (500 V range). ―  3002-229D connector (high voltage wiring harness side) •  Between terminal 4A and terminal 4D a30zzw00007021 •  Is the measured value 100 MΩ or more?	No	Wear insulating gloves, replace the electric compressor high voltage cable, and then perform the repair completion verification.
11	VERIFY IF MALFUNCTION IS CAUSED BY SHORT CIRCUIT IN WIRING HARNESS BETWEEN ONBOARD CHARGER AND CONNECTOR 3002-402 Warning <<High voltage>> •  Wear insulated gloves when working on a high voltage system. •  Disconnect the following high voltage cable connectors. ―  Onboard charger high voltage cable connector (3002-403B) a30zzw00007027 ―  3002-402 connector a30zzw00007032 •  Disconnect the following connector. Warning <<High voltage>> •  For the insulation resistance tester usage, refer to the insulation resistance tester instruction manual. Otherwise, electrocution could result from the voltage generated by the insulation resistance tester. Caution <<High voltage>> •  Use an insulation resistance tester using a testing range of 500 V or less because the voltage applied by the insulation resistance tester may damage the parts.	Yes	Go to the next step.
	•  Wear insulating gloves and measure the resistances between the following terminals using the insulation resistance tester (500 V range). ―  3002-403B connector (high voltage wiring harness side) •  Between terminal 2A and terminal 2D a30zzw00007033 •  Is the measured value 100 MΩ or more?	No	Wear insulating gloves, replace the onboard charger high voltage wiring harness, and then perform the repair completion verification.
12	INSPECT JUNCTION BOX No.3 FOR MALFUNCTION Warning <<High voltage>> •  Wear insulated gloves when working on a high voltage system. •  Perform [Insulation Resistance Inspection] for the junction box No.3 inspection. (See JUNCTION BOX No.3 INSPECTION.) •  Is the insulation resistance within the standard?	Yes	Go to the next step.
		No	Replace the Junction box No.3, then go to repair completion verification 1. (See JUNCTION BOX No.3 REMOVAL/INSTALLATION.)
13	INSPECT DC-DC CONVERTER FOR MALFUNCTION Warning <<High voltage>> •  Wear insulated gloves when working on a high voltage system. •  Install the DC-DC converter high voltage wiring harness connector. Caution •  Connect each probe of the circuit tester to the designated terminal. Resistance cannot be accurately measured if reversed. •  Connect the circuit tester probes to the following terminals and measure the resistance between the following terminals. ―  DC-DC converter part side connector •  Terminal 1A: Voltage application side probe •  Terminal 1D: Ground side probe a30zzw00007112 •  Is the resistance 1 MΩ or more?	Yes	Go to the next step.
		No	Replace the DC-DC converter, then go to repair completion verification 1. (See DC-DC CONVERTER REMOVAL/INSTALLATION.)
14	INSPECT ELECTRIC COMPRESSOR FOR MALFUNCTION Warning <<High voltage>> •  Wear insulated gloves when working on a high voltage system. •  Verify that the electric compressor high voltage wiring harness connector is disconnected. Caution •  Connect each probe of the circuit tester to the designated terminal. Resistance cannot be accurately measured if reversed. •  Connect the circuit tester probes to the following terminals and measure the voltage at the following terminals using diode measurement mode. The measurement is performed 2 times by changing the probe. ―  Electric compressor part side connector 1st time •  Terminal A: Voltage application side probe •  Terminal D: Ground side probe a30zzw00007035 2nd time •  Terminal A: Ground side probe •  Terminal D: Voltage application side probe a30zzw00007036 •  Are the measured values the following values? ―  1st measured value: No measured voltage (O.L. display) ―  2nd measured value: 0.39 — 0.73 V	Yes	Go to the next step.
		No	Replace the electric compressor, then go to repair completion verification 1. (See ELECTRIC COMPRESSOR REMOVAL/INSTALLATION.)
15	INSPECT PTC HEATER FOR MALFUNCTION Warning <<High voltage>> •  Wear insulated gloves when working on a high voltage system. •  Verify that connector 0740-107 is disconnected. Caution •  Connect each probe of the circuit tester to the designated terminal. Resistance cannot be accurately measured if reversed. •  Connect the circuit tester probes to the following terminals and measure the resistance between the following terminals. ―  Connector 0740-107 (vehicle wiring harness side) •  Terminal A: Voltage application side probe •  Terminal D: Ground side probe a30zzw00007113 •  Is the resistance 1 MΩ or more?	Yes	Go to the next step.
		No	Replace the PTC heater, then go to repair completion verification 1. (See POSITIVE TEMPERATURE COEFFICIENT (PTC) HEATER REMOVAL/INSTALLATION.)
16	INSPECT ONBOARD CHARGER FOR MALFUNCTION DEPENDING ON REPEATABILITY Warning <<High voltage>> •  Wear insulated gloves when working on a high voltage system. •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Switch the main power OFF and wait for 30 s or more. •  Switch the main power ON (READY on) and wait for 60 s or more. •  Perform the DTC inspection for the PCM. (See DTC INSPECTION.) •  Is DTC P0AA2:00 a present malfunction?	Yes	Replace the onboard charger, then go to the next step. (See ONBOARD CHARGER REMOVAL/INSTALLATION.)
		No	Go to repair completion verification 1.
17	INSPECT PCM FOR MALFUNCTION DEPENDING ON REPEATABILITY •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Switch the main power OFF and wait for 30 s or more. •  Switch the main power ON (READY on) and wait for 60 s or more. •  Perform the DTC inspection for the PCM. (See DTC INSPECTION.) •  Is DTC P0AA2:00 a present malfunction?	Yes	Replace the PCM, then go to the next step. (See PCM REMOVAL/INSTALLATION.)
		No	Go to repair completion verification 1.
18	INSPECT HIGH VOLTAGE BATTERY FOR MALFUNCTION DEPENDING ON REPEATABILITY Warning <<High voltage>> •  Wear insulated gloves when working on a high voltage system. •  Install/connect the part removed/disconnected during the troubleshooting procedure. •  Clear the DTC recorded in the memory. (See CLEARING DTC.) •  Switch the main power OFF and wait for 30 s or more. •  Switch the main power ON (READY on) and wait for 60 s or more. •  Perform the DTC inspection for the PCM. (See DTC INSPECTION.) •  Is DTC P0AA2:00 a present malfunction?	Yes	Replace the high voltage battery, then go to the next step. (See HIGH VOLTAGE BATTERY REMOVAL/INSTALLATION.)
		No	Go to repair completion verification 1.
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.) •  Switch the main power OFF and wait for 30 s or more. •  Switch the main power ON (READY on) and wait for 60 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. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [L.H.D. (E)].) (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [R.H.D.].) 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.)
		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