Ignition switch connector

That sensor may be the issue if the connector is okay with no damaged pins or wires.

Roy

Did you replace the sensor yet?

Roy

884

P0884
Item Description
Symptom/DTC P0884
Descriptor
Power Up At Speed
Probable Causes
Intermittent Power and Ground Circuits

P0884-POWER UP AT SPEED

When Monitored:
One time after each controller reset. Note: the Transmission Control Module is integrated with Powertrain Control Module. The Transmission Control Module has separate powers and grounds specifically to its portion of the PCM.

Set Condition
This DTC will set if the PCM powers up and senses the vehicle in a valid forward gear (no PRNDL DTCs) with a output speed above 800 RPM, approximately 32Km/h or 20 MPH.

Possible Causes
- INTERMITTENT POWER AND GROUND CIRCUITS

Always perform the 40/41TE Pre-Diagnostic Troubleshooting procedure before proceeding.

Theory of Operation
If a vehicle loses power to the PCM, the vehicle will go to the 2nd gear mode since there is no power available to control the transmission solenoids. However if power is restored, the PCM will power-up and normal operation will be restored. This DTC identifies that power to the PCM was restored when the gear selector was in a Drive position while the vehicle was moving at speeds above 32 Km/h (20 MPH). If a customer shifts to Neutral and cycles the ignition key and quickly shifts to Drive while moving before the PCM comes out of its START ROUTINE, the DTC can be set. Therefore it is critical that this DTC diagnosis repair procedure should only be used if the vehicle is experiencing intermittent 2nd gear operation and subsequently a return to normal operation during normal driving. The transmission will not be placed in Limp-in. This is an informational DTC to be used when attempting to diagnose an intermittent 2nd gear operation and subsequent return to normal transmission operation.

Diagnostic Test
1. CHECK THE POWER AND GROUND CIRCUITS
This DTC is set when the PCM is initialized while the vehicle is moving in a valid forward gear. This is usually caused by a momentary loss of power to the Transmission portion of the PCM.

CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

NOTE: Due to the integration of the Powertrain and Transmission Control Modules, the transmission part of the PCM has its own specific power and ground circuits.

Check all of the Fused B+, Fused Ignition Switch Output, and Ground circuits related to the PCM for an intermittent open or short to ground.
Perform a wiggle test on all wiring and connectors pertaining to the PCM while looking for shorted or open circuits.
With the scan tool, check the DTC EVENT DATA to help identify the conditions in which the DTC was set.
If there are no possible causes remaining, view repair.
Repair
Repair as necessary
Perform 40/41TE VERIFICATION TEST - VER 1 See: A L L Diagnostic Trouble Codes ( DTC ) > Verification Tests > 40/41TE Transmission Verification Test

No, it has to be programmed to your car. It is actually a module.

Roy

The fault that is set, the PCM goes to a default mode. That means it just forgets the issue when you disconnect the negative cable. It does not fix anything or restore settings. That is a myth.

When the fault sets again, then it goes into default and the same issue happens.

The TIPM has internal relays not accessible to anyone.

Roy

Yes, they can, just like any other relay or component.

Roy

No, when the fault is set, the PCM takes over all the controls until the repairs are made and the code cleared.

If you want to monitor the controls you need an advanced scan tool that can access the transmission live data and see what the voltages are at the sensors and solenoids.

Sorry, was traveling today.

Did you replace it?

Is that our video?

Voltage can either be controlled by sending or monitoring the return voltage. The TIPM is a muti control module.

Roy

You are welcome. Glad to help.

If you look at the possibilities for the U101, one of the possibles is the TIPM mis-configuration. My confirmation that it is programmed module.

Roy

1603

P1603
Item Description
Symptom/DTC P1603
Descriptor
Pcm Internal Dual-Port Ram Communication Failure
Probable Causes
Powertrain Control Module (PCM) Fused Ignition Switch Circuit
Powertrain Control Module (PCM) Internal

u101

U0101
Item Description
Symptom/DTC U0101
Descriptor
Lost Communication With Tcm
Probable Causes
Controller Area Network (CAN) B or CAN C Bus Circuits Open or Shorted
Controller Area Network (CAN) C Bus Failure Open or Shorted Condition
DTCs Related to Battery Voltage, Ignition, or VIN Messages
Module That Set This DTC
Powertrain Control Module (PCM)
Totally Integrated Power Module (TIPM) Misconfigured
Transmission Control Module (TCM) (Powertrain Control Module)
Transmission Control Module (TCM) Power and Ground

Yes, verify those two powers.

Roy