DTC Troubleshooting: P0102 (V6) - Honda Accord CR/CT 2012-2017

1.

DTC check:

DTC check

?1.	Press the engine start/stop button to select the ON mode.

?2.

Check for Pending or Confirmed DTCs with the HDS.

DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
P2649 Rocker Arm Oil Control Solenoid A (Bank 1) Circuit High Voltage
P2659 Rocker Arm Oil Control Solenoid A (Bank 2) Circuit High Voltage

DTC Description	DTC
P2827 Line Pressure Solenoid Valve A High Input

Are DTC P2649, P2659, and P2827 (A/T system DTC) indicated at the same time?


	YES

Go to step 2.


	NO

Go to step 3.

2.

Fuse check:

Fuse check

?1.	Press the engine start/stop button to select the OFF mode.

?2.

Check the following fuse.

Fuse	No. B13 (15 A)
Location	Under-dash fuse/relay box

Is the fuse OK?


	YES

Go to step 3.


	NO

Replace the No. B13 (15 A) fuse in the under-dash fuse/relay box. If the fuse is blown again, repair a short in the IG1 ACG circuit or the E EGR circuit between the PCM and the EGR valve. If they are OK, Update the PCM if it does not have the latest software, or substitute a known-good PCM. Also replace the No. B13 (15 A) fuse, then do the repair verification.

3.

Problem verification:

Problem verification

?1.	Press the engine start/stop button to select the ON mode, and wait 2 seconds.

?2.

Check the parameter(s) below with the HDS.

Signal	Threshold		Current conditions
Signal	Values	Unit	Values	Unit
MAF SENSOR	Less than 0.1	V

Do the current condition(s) match the threshold?


	YES

The failure is duplicated. Go to step 4.


	NO

Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM.?

4.

Open wire check (IG1 VBSOL line):

Open wire check (IG1 VBSOL line)

?1.	Press the engine start/stop button to select the OFF mode.

?2.

Disconnect the following connector.

MAF sensor/IAT sensor 5P connector

?3.	Press the engine start/stop button to select the ON mode.

?4.

Measure the voltage between test points 1 and 2.

Test condition	ON mode
	MAF sensor/IAT sensor 5P connector: disconnected
Test circuit	IG1 (VBSOL)
Test point 1	MAF sensor/IAT sensor 5P connector No. 1 (TAN)
Test point 2	Body ground

Is there battery voltage?


	YES

The IG1 (VBSOL) wire is OK. Go to step 5.


	NO

Repair an open in the IG1 (VBSOL) wire between the MAF sensor/IAT sensor and the No. B13 (15 A) fuse in the under-dash fuse/relay box, then do the repair verification.

5.

Determine possible failure area (VGP line, others):

Determine possible failure area (VGP line, others)

?1.	Press the engine start/stop button to select the OFF mode.

?2.

Measure the resistance between test points 1 and 2.

Test condition	OFF mode
	MAF sensor/IAT sensor 5P connector: disconnected
Test circuit	VGP
Test point 1	MAF sensor/IAT sensor 5P connector No. 3 (LT GRN)
Test point 2	Body ground

Is there 190?210 k??


	YES

Go to step 8.


	NO

Go to step 6.

6.

Shorted wire check (VGP line):

Shorted wire check (VGP line)

?1.	Jump the SCS line with the HDS

?2.

Disconnect the following connector.

PCM connector A (51P)

?3.

Check for continuity between test points 1 and 2.

Test condition	OFF mode
	MAF sensor/IAT sensor 5P connector: disconnected
	PCM connector A (51P): disconnected
Test circuit	VGP
Test point 1	MAF sensor/IAT sensor 5P connector No. 3 (LT GRN)
Test point 2	Body ground

Is there continuity?


	YES

Repair a short in the VGP/FGP wire between the PCM (A32) and the MAF sensor/IAT sensor, then do the repair verification.


	NO

The VGP/FGP wire is not shorted. Go to step 7.

7.

Open wire check (VGP/FGP line):

Open wire check (VGP/FGP line)

?1.

Check for continuity between test points 1 and 2.

Test condition	OFF mode
	MAF sensor/IAT sensor 5P connector: disconnected
	PCM connector A (51P): disconnected
Test circuit	VGP/FGP
Test point 1	MAF sensor/IAT sensor 5P connector No. 3 (LT GRN)
Test point 2	PCM connector A (51P) No. 32 (GRN)

Is there continuity?


	YES

The VGP/FGP wire is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM, then do the repair verification.


	NO

Repair an open in the VGP/FGP wire between the PCM (A32) and the MAF sensor/IAT sensor, then do the repair verification.

8.

MAF sensor/IAT sensor check (substitution):

MAF sensor/IAT sensor check (substitution)

?1.	Substitute a known-good MAF sensor/IAT sensor.

?2.	Reconnect all connectors.

?3.	Press the engine start/stop button to select the ON mode.

?4.	Clear the DTC with the HDS.

?5.	Start the engine. Hold the engine speed at 2,000 rpm without load (A/T in P or N, M/T in neutral).

?6.

Check for Pending or Confirmed DTCs with the HDS.

DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
P0102 MAF Sensor Circuit Low Voltage

Is DTC P0102 indicated?


	YES

The MAF sensor/IAT sensor is OK. Update the PCM if it does not have the latest software, or substitute a known-good PCM, then do the repair verification.


	NO

Replace the original MAF sensor/IAT sensor, then do the repair verification.

Repair verification:

?1.	Press the engine start/stop button to select the OFF mode.

?2.	Reconnect all connectors.

?3.	Exit the SCS mode with the HDS.

?4.	Press the engine start/stop button to select the ON mode.

?5.	Reset the PCM with the HDS.

?6.	Do the PCM idle learn procedure.

?7.

Check for Pending or Confirmed DTCs with the HDS.

DTC Description	Confirmed DTC	Pending DTC	Freeze Frame
P0102 MAF Sensor Circuit Low Voltage

Is DTC P0102 indicated?


	YES

Check for poor connections or loose terminals at the MAF sensor/IAT sensor and the PCM. If the PCM was updated, substitute a known-good PCM, then recheck. If the PCM was substituted, go to step 3.


	NO

Troubleshooting is complete. If the PCM was substituted, replace the original PCM. If any other Pending or Confirmed DTCs are indicated, go to the indicated DTC's troubleshooting.?