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View Full Version : PCM to BCM swap.



Daws222ooo
April 20th, 2015, 05:13 AM
I did a pcm swap from a 98 to a 2002 style (411). Car runs and im pretty positive all wiring is correct. If you do a pcm swap and a cos do I have to do anything to bcm,dim? Is it required or just recommended? These are the codes im getting. Also a couple gauges are not working but when logged it shows correct (oil, trans temp). I would like to get it sorted out ive been fighting this for a long time and I don't want to proceed the tuning until then.


Diagnostic Trouble Codes
P0102 Mass Air Flow (MAF) Sensor Circuit Low ($10) "Powertrain Control Module (PCM)"
P0103 Mass Air Flow (MAF) Sensor Circuit High ($10) "Powertrain Control Module (PCM)"
P1336 Crankshaft Position (CKP) System Variation Not Learned ($10) "Powertrain Control Module (PCM)"
P0102 Mass Air Flow (MAF) Sensor Circuit Low ($10) "Powertrain Control Module (PCM)"
P0103 Mass Air Flow (MAF) Sensor Circuit High ($10) "Powertrain Control Module (PCM)"
P1336 Crankshaft Position (CKP) System Variation Not Learned ($10) "Powertrain Control Module (PCM)"
P0102 Mass Air Flow (MAF) Sensor Circuit Low PHC ($10) "Powertrain Control Module (PCM)"
P0103 Mass Air Flow (MAF) Sensor Circuit High PHC ($10) "Powertrain Control Module (PCM)"
P1336 Crankshaft Position (CKP) System Variation Not Learned MPHC ($10) "Powertrain Control Module (PCM)"
U1255 HC ($28) "Traction Control System (TCS) or Electronic Brake Control Module (EBCM)"
B2587 Parklamp Control Circuit Low H ($40) "Body Control Module (BCM) or Dash Integration Module (DIM)"
B2592 Left Cornering Lamp Circuit Low H ($40) "Body Control Module (BCM) or Dash Integration Module (DIM)"
U1255 HC ($40) "Body Control Module (BCM) or Dash Integration Module (DIM)"
B0333 Climate Control Selection Switch 5 (defrost) Circuit HC ($99) "HVAC Control Module"
U1064 Lost Communications With Body Controller - Device $40 H ($A0) "Driver Door Module (DDM)"
U1064 Lost Communications With Body Controller - Device $40 H ($A1) "Front Passenger Door Module (FPDM)"
B2605 Daytime Running Lamp Control 2 (right) Circuit H ($A6) "Driver Seat Module (DSM)"
U1096 Lost Communications With Driver Information and Displays Controller - Device $60 H ($B0) "Remote Control Door Lock Receiver (RCDLR) or Remote Function Actuation (RFA)"
U1064 Lost Communications With Body Controller - Device $40 H ($B0) "Remote Control Door Lock Receiver (RCDLR) or Remote Function Actuation (RFA)"
U1016 Lost Communications With Engine Controller - Device $10 H ($B0) "Remote Control Door Lock Receiver (RCDLR) or Remote Function Actuation (RFA)"

History data

joecar
April 20th, 2015, 11:20 PM
Which year/model/vehicle...?

ScarabEpic22
April 21st, 2015, 05:05 AM
Did you clear the DTCs after flashing the first time? I know EFILive will do it automatically after a flash, but try it again and see if any/all of the codes come back.

Daws222ooo
April 21st, 2015, 06:52 AM
Which year/model/vehicle...?

It a 1997 corvette, I'm starting to think possibly a cluster issue. Oil pressure not reading on gauge but it does when logged. All wiring has been checked all grounds checked and cleaned. My real concerns are more so the bcm or dim codes, it's speed density that's why the mass codes are there and I just need to do a crank relearn also. Just weird efi is seeing oil pressure but not the cluster. I've been on this for over a year now but gave up. Back at it now might have to get a tech2.

Daws222ooo
April 21st, 2015, 06:53 AM
Did you clear the DTCs after flashing the first time? I know EFILive will do it automatically after a flash, but try it again and see if any/all of the codes come back.
Yup I've cleared them and some did go away.