DTC P0A0C:00 [PCM (e-SKYACTIV)]


id300202029900

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

Interlock switch system: Low input

Detection condition
•  The PCM detects a short to ground in the interlock circuit when the vehicle is stopped.
Fail-safe
•  Refer to "DTC Table" and "Fail-safe Function Malfunction Contents Table". (See DTC TABLE [PCM (e-SKYACTIV)].)
Possible cause
•  Junction box No.3 terminal cover (side) malfunction
•  Junction box No.3 terminal cover (upper) malfunction
•  Junction box No.3 malfunction
•  DC-DC converter internal interlock circuit malfunction
•  Electronic A/C compressor internal interlock circuit malfunction
•  PTC heater internal interlock circuit malfunction
•  Onboard charger internal interlock circuit malfunction
High voltage battery malfunction
•  High voltage battery internal interlock circuit malfunction
•  Charge port assembly connector or terminal malfunction
•  Short to ground in interlock switch circuit
•  Interlock switch circuit connector or terminal malfunction
•  PCM 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.)

Short circuit location determination procedure

Caution
•  Keep the connected/disconnected connectors and jumper wires during inspection until instructed to connect/disconnect them, as this may lead to a false diagnosis.
a30zzw00006854

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 WHETHER MALFUNCTION IS PRESENT OR PAST
•  Perform the DTC inspection for the PCM.
•  Is DTC P0A0C:00 a present malfunction?
Yes
Go to the next step.
No
Go to the repair completion verification 2.
3
INSPECT CONNECTORS FOR MALFUNCTION
•  Disconnect the following connectors and inspect the condition of the connectors and terminals.
―  Connector C-08
―  Connector 3002-201
•  Are the connectors and terminals normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification 1.
4
INSPECT CONNECTORS FOR MALFUNCTION
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Remove the service plug.
•  After 10 min have elapsed after removing the service plug, perform a zero voltage verification at the voltage detection point of the junction box No.3 to verify that there is no electrical charge in the high voltage circuit.
•  Disconnect the following connectors and inspect the condition of the connectors and terminals.
―  Connector 0740-107
―  Connector C-67
―  Connector 3002-231
•  Are the connectors and terminals normal?
Yes
Go to the next step.
No
If there are malfunctions with connector 3002-231 (high voltage battery side), connector 0740-107 (high voltage battery side), and connector C-67 (high voltage battery side):
•  Replace the high voltage battery, then go to the repair completion verification 1.
If there is a malfunction with connector 3002-231 (high voltage cable side):
•  Replace the high voltage cable, then go to the repair completion verification 1.
If there is a malfunction with connector 0740-107 (high voltage cable side):
•  Replace the PTC heater, then go to the repair completion verification 1.
If there are malfunctions with connector C-08 (vehicle wiring harness side), connector C-67 (vehicle wiring harness side), and connector 3002-201 (vehicle wiring harness side):
•  Repair or replace the malfunctioning location and perform the repair completion verification 1.
5
DETERMINE SHORT CIRCUIT LOCATION (FRONT WIRING HARNESS SIDE)
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Reinstall the junction box No.3 terminal cover (upper).
•  Inspect for continuity between the following terminals and the body ground.
―  Connector C-08 (front harness side)
•  Terminal X
•  Terminal W
•  Is there continuity?
Yes
Perform the front wiring harness inspection procedure from Step 1.
No
Go to the next step.
6
DETERMINE SHORT CIRCUIT LOCATION (REAR WIRING HARNESS SIDE)
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Install the jumper wire between the following connector terminals to short them with each other.
―  Connector C-67 (vehicle wiring harness side)
•  Between terminal D and terminal C
―  Connector 3002-201 (vehicle wiring harness side)
•  Between terminal BA and terminal AH
Caution
•  When using the jumper wire, be careful not to short wrong terminals. Otherwise, a vehicle malfunction could occur.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector C-08 (rear harness side)
•  Terminal X
•  Is there continuity?
Yes
Perform the rear wiring harness inspection procedure from Step 1.
No
Go to the next step.
7
INSPECT HIGH VOLTAGE CABLE INTERLOCK CIRCUIT FOR SHORT TO GROUND
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-231 (high voltage cable side)
•  Terminal B
•  Is there continuity?
Yes
Replace the high voltage cable, then go to the repair completion verification 1.
No
Go to the next step.
8
INSPECT PTC HEATER INTERLOCK CIRCUIT FOR SHORT TO GROUND
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 0740-107 (high voltage cable side)
•  Terminal B
•  Is there continuity?
Yes
Replace the PTC heater, then go to the repair completion verification 1.
No
Go to the next step.
9
INSPECT HIGH VOLTAGE BATTERY INTERNAL INTERLOCK CIRCUIT FOR SHORT TO GROUND
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector C-67 (high voltage battery side)
•  Terminal F
―  Connector C-67 (high voltage battery side)
•  Terminal E
―  Connector 0740-107 (high voltage battery side)
•  Terminal C
―  Connector 0740-107 (high voltage battery side)
•  Terminal B
•  Is there continuity?
Yes
Replace the high voltage battery, then go to the repair completion verification 1.
No
Go to the next step.
10
VERIFY WHETHER MALFUNCTION IS PRESENT OR PAST
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.
•  Replicate the vehicle conditions at the time the DTC was detected using the following procedure.
Warning
•  While performing this step, always operate the vehicle in a safe and lawful manner.
•  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.
―  Drive the vehicle under the snapshot data condition.
•  Perform the DTC inspection for the PCM.
•  Is the same Pending DTC present?
Yes
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
If the CAN communication is normal, perform the diagnosis from Step 1.
•  If the malfunction recurs, replace the PCM, then go to the repair completion verification 1.
No
Go to the repair completion verification 2.


Front wiring harness inspection procedure

Caution
•  Keep the connected/disconnected connectors and jumper wires during inspection until instructed to connect/disconnect them, as this may lead to a false diagnosis.
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Step

Inspection

Results

Action

1
INSPECT CONNECTOR 3002-229E FOR MALFUNCTION
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Disconnect connector 3002-229E.
•  Are the connectors and terminals normal?
Yes
Go to the next step.
No
Repair or replace the malfunctioning location and perform the repair completion verification 1.
2
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-08 AND CONNECTOR 3002-229E
•  Inspect for continuity between the following terminals and the body ground.
―  Connector C-08 (front harness side)
•  Terminal W
•  Terminal X
•  Is there continuity?
Yes
Repair or replace the malfunctioning location and perform the repair completion verification 1.
No
Go to the next step.
3
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR 3002-229E
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-229E (wiring harness side)
•  Terminal 5C
•  Terminal 5E
•  Is there continuity?
Yes
Repair or replace the malfunctioning location and perform the repair completion verification 1.
No
Go to the next step.
4
DETERMINE SHORT CIRCUIT LOCATION
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-229E (junction box No.3 side)
•  Terminal 5B
•  Terminal 5C
•  Terminal 5F
If there is continuity between terminal 5B and GROUND:
•  Go to the next step.
If there is continuity between terminal 5C and GROUND:
•  Go to step 7.
If there is continuity between terminal 5F and GROUND:
•  Go to step 9.
5
INSPECT FOR SHORT TO GROUND BETWEEN JUNCTION BOX NO.3 AND ELECTRIC COMPRESSOR
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Disconnect connector 3002-229D.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-229D (vehicle wiring harness side)
•  Terminal 4C
•  Is there continuity?
Yes
Go to the next step.
No
Replace the junction box No.3, then go to the repair completion verification 1.
6
INSPECT ELECTRIC COMPRESSOR INTERNAL INTERLOCK CIRCUIT FOR SHORT TO GROUND
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Disconnect connector 0740-109.
•  Install the jumper wire between the following connector terminals to short them with each other
―  Connector 0740-109 (vehicle wiring harness side)
•  Terminal B and terminal C
Caution
•  When using the jumper wire, be careful not to short wrong terminals. Otherwise, a vehicle malfunction could occur.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-229D (vehicle wiring harness side)
•  Terminal 4C
•  Is there continuity?
Yes
Wear insulating gloves and replace the high voltage cable (electric compressor cable) and perform the repair completion verification 1.
No
Replace the electric compressor, then go to the repair completion verification 1.
7
INSPECT JUNCTION BOX NO.3 TERMINAL COVER (UPPER) FOR MALFUNCTION
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Remove the junction box No.3 terminal cover (upper).
•  Inspect for continuity between the junction box No.3 terminal cover (upper) and the housing.
•  Is there continuity?
Yes
Replace the terminal cover (upper) and perform repair completion verification 1.
No
Go to the next step.
8
INSPECT JUNCTION BOX NO.3 TERMINAL COVER (SIDE) FOR MALFUNCTION
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Remove the junction box No.3 terminal cover (side).
•  Inspect for continuity between the junction box No.3 terminal cover (side) and the housing.
•  Is there continuity?
Yes
Replace the terminal cover (side) and perform repair completion verification 1.
No
Replace the junction box No.3, then go to the repair completion verification 1.
9
INSPECT FOR SHORT TO GROUND BETWEEN JUNCTION BOX NO.3 AND DC-DC CONVERTER
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Disconnect connector 3002-229C.
•  Inspect for continuity between the following terminals and the body ground.
―  connector 3002-229C (vehicle wiring harness side)
•  Terminal 3C
•  Is there continuity?
Yes
Go to the next step.
No
Replace the junction box No.3, then go to the repair completion verification 1.
10
INSPECT DC-DC-DC CONVERTER INTERNAL INTERLOCK CIRCUIT FOR SHORT TO GROUND
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Disconnect the connector 3002-501A.
•  Install the jumper wire between the following connector terminals to short them with each other
―  Connector 3002-501A (vehicle wiring harness side)
•  Terminal 1B and terminal 1C
Caution
•  When using the jumper wire, be careful not to short wrong terminals. Otherwise, a vehicle malfunction could occur.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-229C (vehicle wiring harness side)
•  Terminal 3C
•  Is there continuity?
Yes
Wear insulating gloves and replace the high voltage cable (DC-DC converter cable) and perform the repair completion verification 1.
No
Replace the DC-DC converter, then go to the repair completion verification 1.


Rear wiring harness inspection procedure

Caution
•  Keep the connected/disconnected connectors and jumper wires during inspection until instructed to connect/disconnect them, as this may lead to a false diagnosis.
a30zzw00006856

Step

Inspection

Results

Action

1
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-08 AND CONNECTOR 3002-201
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Remove the jumper wire installed to connector 3002-201 (vehicle wiring harness side).
•  Inspect for continuity between the following terminals and the body ground.
―  Connector C-08 (rear wiring harness side)
•  Terminal W
•  Is there continuity?
Yes
Repair or replace the malfunctioning location and perform the repair completion verification 1.
No
Go to the next step.
2
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-65 AND CONNECTOR 3002-201
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Disconnect connector C-65.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector C-65 (vehicle wiring harness side)
•  Terminal C
•  Is there continuity?
Yes
Repair or replace the malfunctioning location and perform the repair completion verification 1.
No
Go to the next step.
3
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-65 AND CONNECTOR 3002-403A
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector C-65 (onboard charger side)
•  Terminal D
•  Is there continuity?
Yes
Disconnect connector 3002-403A.
If continuity is lost when connector 3002-403A is removed:
•  Go to the next step.
If continuity is present even when connector 3002-403A is removed:
•  Repair or replace the malfunctioning location and perform the repair completion verification 1.
No
Go to step 9.
4
INSPECT ONBOARD CHARGER INTERNAL CIRCUIT FOR SHORT TO GROUND
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Disconnect connector 3002-403A.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector C-65 (charge lid box assembly side)
•  Terminal C
•  Is there continuity?
Yes
Go to the next step.
No
Replace the onboard charger, then go to the repair completion verification 1.
5
DETERMINE SHORT TO GROUND LOCATION IN WIRING HARNESS BETWEEN CONNECTOR C-65 AND CONNECTOR 3002-403A
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Disconnect connector 3002-412.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector C-65 (charge lid box assembly side)
•  Terminal C
•  Is there continuity?
Yes
Go to step 7.
No
Go to the next step.
6
INSPECT 3002-412 CONNECTOR INTERNAL CIRCUIT FOR SHORT TO GROUND
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-412 (high voltage battery side)
•  Terminal C
•  Is there continuity?
Yes
Replace the high voltage battery, then go to the repair completion verification 1.
No
Replace the charge port assembly, then go to the repair completion verification 1.
7
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-65 AND CONNECTOR 3002-411
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Disconnect connector 3002-411.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector C-65 (charge lid box assembly side)
•  Terminal C
•  Is there continuity?
Yes
Replace the charge port assembly, then go to the repair completion verification 1.
No
Go to the next step.
8
INSPECT 3002-411 CONNECTOR INTERNAL CIRCUIT FOR SHORT TO GROUND
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-411 (high voltage battery side)
•  Terminal C
•  Is there continuity?
Yes
Replace the high voltage battery, then go to the repair completion verification 1.
No
Replace the charge port assembly, then go to the repair completion verification 1.
9
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR 3002-605 AND CONNECTOR C-65
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Disconnect connector 3002-605.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-605 (vehicle wiring harness side)
•  Terminal B
•  Is there continuity?
Yes
Repair or replace the malfunctioning location and perform the repair completion verification 1.
No
Go to the next step.
10
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR 3002-605 AND CONNECTOR 3002-403B
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-605 (onboard charger side)
•  Terminal B
•  Is there continuity?
Yes
Disconnect connector 3002-403B.
If continuity is lost when connector 3002-403B is removed:
•  Go to the next step.
If continuity is present even when connector 3002-403B is removed:
•  Repair or replace the malfunctioning location and perform the repair completion verification 1.
No
Go to step 12.
11
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR 3002-605 AND CONNECTOR 3002-403B
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-605 (onboard charger side)
•  Terminal A
•  Is there continuity?
Yes
Repair or replace the malfunctioning location and perform the repair completion verification 1.
No
Replace the onboard charger, then go to the repair completion verification 1.
12
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR 3002-605 AND CONNECTOR C-08
Warning
<<High voltage>>
•  Wear insulated gloves when working on a high voltage system.
•  Install the jumper wire between the following connector terminals to short them with each other
―  Connector C-67 (vehicle wiring harness side)
•  Terminal C and terminal D
Caution
•  When using the jumper wire, be careful not to short wrong terminals. Otherwise, a vehicle malfunction could occur.
•  Inspect for continuity between the following terminals and the body ground.
―  Connector 3002-605 (onboard charger side)
•  Terminal A
•  Is there continuity?
Yes
If continuity is lost when the jumper wire installed to connector C-67 is removed:
•  Replace the wiring harness between connector C-08 and connector C-67.
―  Perform the repair completion verification 1.
If continuity is present even when the jumper wire installed to connector C-67 is removed:
•  Replace the wiring harness between connector C-67 and connector 3002-605.
―  Perform the repair completion verification 1.
No
Go to the next step.
13
VERIFY IF CAUSE IS SHORT CIRCUIT IN PCM INTERNAL CIRCUIT
•  Replace the PCM.
•  Install/connect the part removed/disconnected during the troubleshooting procedure.
•  Clear the DTC recorded in the memory.
•  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.
•  Is DTC P0A0C:00 a present malfunction?
Yes
Replace the high voltage battery, then go to the repair completion verification 1.
No
Go to the repair completion verification 1.


Repair completion verification

Step

Inspection

Results

Action

Repair completion verification 1
VERIFY THAT VEHICLE IS REPAIRED
•  Replace the PCM.
•  Install/connect the part removed/disconnected during the troubleshooting procedure.
•  Clear the DTC recorded in the memory.
•  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.
•  Is DTC P0A0C:00 a present malfunction?
Yes
Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.
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.
No
Go to the next step.
Repair completion verification 2
VERIFY IF OTHER DTCs DISPLAYED
•  Perform the DTC inspection.
•  Are any other DTCs displayed?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
No
DTC troubleshooting completed.