DTC P0102:00 [PCM (SKYACTIV-D 2.2)]

id0102j5700900


Engine Type

Item

Reference
Fuel injector (2 pin type)
(See Fuel injector (2 pin type).)
Fuel injector (6 pin type)
(See Fuel injector (6 pin type).)


Fuel injector (2 pin type)

DTC P0102:00

MAF sensor circuit low input
DETECTION CONDITION
•  If the PCM detects that the MAF sensor voltage at the PCM terminal 2U is 0.29 V or less for 5 s with the following condition met, the PCM determines that the MAF sensor circuit voltage is low.
MONITORING CONDITIONS
―  Battery voltage: 8—20 V
―  0.5 s have elapsed after the ignition was switched ON (engine off or on)
Diagnostic support note
•  This is a continuous monitor (CCM).
•  The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.
•  FREEZE FRAME DATA/Snapshot data is available.
•  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
•  PCM restricts engine torque.
•  Inhibits the auto diesel particulate filter regeneration control.
•  Inhibits the compulsory diesel particulate filter regeneration control.
•  Inhibits the EGR control.
•  Inhibits engine-stop by operating the i-stop function.
POSSIBLE CAUSE
•  MAF sensor/IAT sensor No.1 connector or terminals malfunction
•  Short to ground or open circuit in MAF sensor power supply circuit
―  Short to ground in wiring harness between ENGINE1 15 A fuse and MAF sensor/IAT sensor No.1 terminal E
―  ENGINE1 15 A fuse malfunction
―  Open circuit in wiring harness between main relay terminal C and MAF sensor/IAT sensor No.1 terminal E
•  Short to ground in wiring harness between the following terminals:
―  MAF sensor/IAT sensor No.1 terminal D—PCM terminal 2AC
―  MAF sensor/IAT sensor No.1 terminal C—PCM terminal 2U
•  PCM connector or terminals malfunction
•  MAF sensor signal circuit and ground circuit are shorted to each other
•  Open circuit in wiring harness between the following terminals:
―  MAF sensor/IAT sensor No.1 terminal D—PCM terminal 2AC
―  MAF sensor/IAT sensor No.1 terminal C—PCM terminal 2U
•  MAF sensor malfunction
•  PCM malfunction

Diagnostic Procedure

STEP

INSPECTION

ACTION
1
RECORD VEHICLE STATUS AT TIME OF DTC DETECTION TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture function of the PC.
•  Record the FREEZE FRAME DATA/snapshot data on the repair order.
—
Go to the next step.
2
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.
No
Go to the next step.
3
INSPECT MAF SENSOR/IAT SENSOR NO.1 CONNECTOR CONDITION
•  Switch the ignition off.
•  Disconnect the MAF sensor/IAT sensor No.1 connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 10.
No
Go to the next step.
4
INSPECT MAF SENSOR POWER SUPPLY CIRCUIT FOR SHORT TO GROUND OR OPEN CIRCUIT
•  Verify that the MAF sensor/IAT sensor No.1 connector is disconnected.
•  Switch the ignition ON (engine off).
Note
•  Another DTC may be stored by the PCM detecting an open circuit.
•  Measure the voltage at the MAF sensor/IAT sensor No.1 terminal E (wiring harness-side).
•  Is the voltage B+?
Yes
Go to the next step.
No
Inspect the ENGINE1 15 A fuse.
•  If the fuse is blown:
―  Refer to the wiring diagram and verify whether or not there is a common connector between ENGINE1 15 A fuse and MAF sensor/IAT sensor No.1 terminal E.
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to ground.
•  Replace the fuse.
•  If the fuse is damaged:
―  Replace the fuse.
•  If the fuse is normal:
―  Refer to the wiring diagram and verify whether or not there is a common connector between main relay terminal C and MAF sensor/IAT sensor No.1 terminal E.
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to Step 10.
5
INSPECT MAF SENSOR CIRCUIT FOR SHORT TO GROUND
•  Verify that the MAF sensor/IAT sensor No.1 connector is disconnected.
•  Switch the ignition off.
•  Inspect for continuity between the following terminals (wiring harness-side) and body ground:
―  MAF sensor/IAT sensor No.1 terminal D
―  MAF sensor/IAT sensor No.1 terminal C
•  Is there continuity?
Yes
If the short to ground circuit could be detected in the wiring harness:
•  Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
―  MAF sensor/IAT sensor No.1 terminal D—PCM terminal 2AC
―  MAF sensor/IAT sensor No.1 terminal C—PCM terminal 2U
If there is a common connector:
―  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground.
―  Repair or replace the malfunctioning part.
If there is no common connector:
―  Repair or replace the wiring harness which has a short to ground.
If the short to ground circuit could not be detected in the wiring harness:
•  Replace the PCM (short to ground in the PCM internal circuit).
Go to Step 10.
No
Go to the next step.
6
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect for poor connection (such as damaged/pulled-out pins, corrosion).
•  Is there any malfunction?
Yes
Repair or replace the connector and/or terminals, then go to Step 10.
No
Go to the next step.
7
INSPECT MAF SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT TO EACH OTHER
•  Verify that the MAF sensor/IAT sensor No.1 and PCM connectors are disconnected.
•  Inspect for continuity between MAF sensor/IAT sensor No.1 terminals C and B (wiring harness-side).
•  Is there continuity?
Yes
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  MAF sensor/IAT sensor No.1 terminal C—PCM terminal 2U
•  MAF sensor/IAT sensor No.1 terminal B—PCM terminal 2V
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to each other.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has a short to each other.
Go to Step 10.
No
Go to the next step.
8
INSPECT MAF SENSOR CIRCUIT FOR OPEN CIRCUIT
•  Verify that the MAF sensor/IAT sensor No.1 and PCM connectors are disconnected.
•  Inspect for continuity between the following terminals (wiring harness-side):
―  MAF sensor/IAT sensor No.1 terminal D—PCM terminal 2AC
―  MAF sensor/IAT sensor No.1 terminal C—PCM terminal 2U
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify whether or not there is a common connector between the following terminals:
•  MAF sensor/IAT sensor No.1 terminal D—PCM terminal 2AC
•  MAF sensor/IAT sensor No.1 terminal C—PCM terminal 2U
If there is a common connector:
•  Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for an open circuit.
•  Repair or replace the malfunctioning part.
If there is no common connector:
•  Repair or replace the wiring harness which has an open circuit.
Go to Step 10.
9
INSPECT MAF SENSOR
•  Reconnect all disconnected connectors.
•  Inspect the MAF sensor.
•  Is there any malfunction?
Yes
Replace the MAF sensor/IAT sensor No.1, then go to the next step.
(See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)
No
Go to the next step.
10
VERIFY DTC TROUBLESHOOTING COMPLETED
•  Always reconnect all disconnected connectors.
•  Clear the DTC from the PCM memory using the M-MDS.
•  Perform the KOEO or KOER self test.
•  Is the same DTC present?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM.
Go to the next step.
No
Go to the next step.
11
VERIFY AFTER REPAIR PROCEDURE
•  Perform the “AFTER REPAIR PROCEDURE”.
•  Are any DTCs present?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [PCM (SKYACTIV-D 2.2)].)
No
DTC troubleshooting completed.


Fuel injector (6 pin type)

DTC P0102:00

MAF sensor circuit low input
DETECTION CONDITION
•  With the following conditions met, the MAF sensor voltage is less than 0.12 V for a continuous 5 s.
―  Battery positive voltage: 8—16 V
―  0.5 s have elapsed after ignition is switched ON (engine off or on)
―  The following DTCs are not detected
•  Constant voltage power supply control system: P0642:00, P0643:00
Diagnostic support note
•  This is a continuous monitor (CCM).
•  The check engine light illuminates if the PCM detects the above malfunction condition during the first drive cycle.
•  FREEZE FRAME DATA/Snapshot data is available.
•  DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION
•  Limits engine torque.
•  Inhibits the automatic diesel particulate filter regeneration control.
•  Inhibits the manual diesel particulate filter regeneration control.
•  Inhibits the EGR control.
POSSIBLE CAUSE
•  MAF/IAT sensor No.1 connector or terminal malfunction
•  Short to ground or open circuit in MAF sensor power supply circuit
―  Short to ground in wiring harness between main relay terminal C and MAF/IAT sensor No.1 terminal E
―  ENGINE1 15 A fuse malfunction
―  Open circuit in wiring harness between main relay terminal C and MAF/IAT sensor No.1 terminal E
•  Short to ground in wiring harness between the following terminals:
―  MAF/IAT sensor No.1 terminal D and PCM terminal 2AC
―  MAF/IAT sensor No.1 terminal C and PCM terminal 2Z
•  PCM connector or terminal malfunction
•  Short circuit in MAF sensor signal circuit and ground circuit
•  Open circuit in wiring harness between the following terminals:
―  MAF/IAT sensor No.1 terminal D and PCM terminal 2AC
―  MAF/IAT sensor No.1 terminal C and PCM terminal 2Z
•  MAF sensor malfunction
•  PCM malfunction

Diagnostic Procedure

Step

Inspection

Results

Action
1
RECORD VEHICLE STATUS WHEN DTC WAS DETECTED TO UTILIZE WITH REPEATABILITY VERIFICATION
Note
•  Recording can be facilitated using the screen capture function of the PC.
•  Record the freeze frame data/snap shot data.
—
Go to the next step.
2
INSPECT MAF/IAT SENSOR NO.1 CONNECTOR CONDITION
•  Switch the ignition OFF.
•  Disconnect the MAF/IAT sensor No.1 connector.
•  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 9.
3
INSPECT MAF SENSOR POWER SUPPLY CIRCUIT FOR OPEN CIRCUIT OR SHORT TO GROUND
•  Verify that the MAF/IAT sensor No.1 connector is disconnected.
•  Switch the ignition ON (engine off).
Note
•  Another DTC may be stored by the PCM detecting an open circuit.
•  Measure the voltage at MAF/IAT sensor No.1 terminal E (vehicle wiring harness side).
•  Is the voltage B+?
Yes
Go to the next step.
No
Inspect the ENGINE1 15 A fuse.
If the fuse is blown:
•  Refer to the wiring diagram and verify if there is a common connector between main relay terminal C and MAF/IAT sensor No.1 terminal E.
If there is a common connector:
―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.
―  Repair or replace the malfunctioning location.
―  Replace the fuse.
If there is no common connector:
―  Repair or replace the wiring harness which is shorted to ground.
―  Replace the fuse.
If the fuse is damaged:
•  Replace the fuse.
If the fuse is normal:
•  Refer to the wiring diagram and verify if there is a common connector between main relay terminal C and MAF/IAT sensor No.1 terminal E.
If there is a common connector:
―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.
―  Repair or replace the malfunctioning location.
If there is no common connector:
―  Repair or replace the wiring harness which has an open circuit.
Go to Step 9.
4
INSPECT MAF SENSOR CIRCUIT FOR SHORT TO GROUND
•  Verify that the MAF/IAT sensor No.1 connector and the PCM connector are disconnected.
•  Switch the ignition OFF.
•  Inspect for continuity between the following terminals (vehicle wiring harness side) and ground.
―  MAF/IAT sensor No.1 terminal D
―  MAF/IAT sensor No.1 terminal C
•  Is there continuity?
Yes
Disconnect the PCM connector and inspect the wiring harness for short to ground.
If there is a short to ground in wiring harness:
•  Refer to the wiring diagram and verify if there is a common connector between the following terminals.
―  MAF/IAT sensor No.1 terminal D and PCM terminal 2AC
―  MAF/IAT sensor No.1 terminal C and PCM terminal 2Z
If there is a common connector:
•  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short to ground to determine the malfunctioning location.
•  Repair or replace the malfunctioning location, then go to Step 9.
If there is no common connector:
•  Repair or replace the wiring harness which is shorted to ground, then go to Step 9.
If there is no short to ground in wiring harness:
•  Go to the next step.
No
Go to the next step.
5
INSPECT PCM CONNECTOR CONDITION
•  Disconnect the PCM connector.
•  Inspect the connector engagement and connection condition, and inspect the terminals for damage, deformation, corrosion, or disconnection.
•  Is the connector normal?
Yes
Go to the next step.
No
Repair or replace the connector, then go to Step 9.
6
INSPECT MAF SENSOR SIGNAL CIRCUIT AND GROUND CIRCUIT FOR SHORT CIRCUIT
•  Verify that the MAF/IAT sensor No.1 connector and the PCM connector are disconnected.
•  Inspect for continuity between MAF/IAT sensor No.1 terminals C and B (vehicle wiring harness side).
•  Is there continuity?
Yes
Refer to the wiring diagram and verify if there is a common connector between the following terminals.
•  MAF/IAT sensor No.1 terminal C and PCM terminal 2Z
•  MAF/IAT sensor No.1 terminal B and PCM terminal 2V
If there is a common connector:
―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for short circuit to determine the malfunctioning location.
―  Repair or replace the malfunctioning location.
If there is no common connector:
―  Repair or replace the malfunctioning wiring harness.
Go to Step 9.
No
Go to the next step.
7
INSPECT MAF SENSOR CIRCUIT FOR OPEN CIRCUIT
•  Verify that the MAF/IAT sensor No.1 connector and the PCM connector are disconnected.
•  Inspect between the following terminals (vehicle wiring harness side) for continuity.
―  MAF/IAT sensor No.1 terminal D and PCM terminal 2AC
―  MAF/IAT sensor No.1 terminal C and PCM terminal 2Z
•  Is there continuity?
Yes
Go to the next step.
No
Refer to the wiring diagram and verify if there is a common connector between the following terminals.
•  MAF/IAT sensor No.1 terminal D and PCM terminal 2AC
•  MAF/IAT sensor No.1 terminal C and PCM terminal 2Z
If there is a common connector:
―  Inspect the common connector and terminals for corrosion, damage, or disconnection and the common wiring harnesses for an open circuit to determine the malfunctioning location.
―  Repair or replace the malfunctioning location.
If there is no common connector:
―  Repair or replace the wiring harness which has an open circuit.
Go to Step 9.
8
INSPECT MAF SENSOR
•  Reconnect all the disconnected connectors.
•  Inspect the MAF sensor.
•  Is the MAF sensor normal?
Yes
Go to the next step.
No
Replace MAF/IAT sensor No.1, then go to the next step.
(See MASS AIR FLOW (MAF) SENSOR/INTAKE AIR TEMPERATURE (IAT) SENSOR NO.1 REMOVAL/INSTALLATION [SKYACTIV-D 2.2])
9
VERIFY THAT REPAIRS HAVE BEEN COMPLETED
•  Reconnect all the disconnected connectors.
•  Refer to the [MEMORY CLEARING PROCEDURE] and clear the DTC.
•  Perform the KOEO or KOER self-test.
•  Has DTC P0102:00 been recorded?
Yes
Repeat the inspection from Step 1.
•  If the malfunction recurs, replace the PCM, then go to the next step.
No
Go to the next step.
10
VERIFY OTHER DTCs
•  Has any other DTC or pending code been stored?
Yes
Repair the malfunctioning location according to the applicable DTC troubleshooting.
(See DTC TABLE [PCM (SKYACTIV-D 2.2)])
No
DTC troubleshooting completed.