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1. Check the control wire to the Totally Integrated Power Module (TIPM). The Powertrain Control Module (PCM) should send power out on the Light Green wire from pin 18 of the C4 connector to the Totally Integrated Power Module (TIPM) at key on. If there is a problem in the relay circuits, solenoid circuits or pressure switch circuits, it will then remove the voltage from the Light Green wire to take power away from the transmission.
2. When the PCM requests the circuit to be energized by the TIPM, the PCM is monitoring the return voltage from the TIPM on pins 19 and 28 of the C4 connector.
The Totally Integrated Power Module (TIPM) is a combination Power Distribution Center and control module, replacing the Integrated Power Module (IPM) and Front Control Module (FCM). It's replaced as an assembly.
159, (USA?) must be V6 or V8 it has 2 banks. first google hit Possible causes
- Faulty Rear Heated Oxygen Sensor Bank 2 - Rear Heated Oxygen Sensor Bank 2 harness is open or shorted - Rear Heated Oxygen Sensor Bank 2 circuit poor electrical connection - Inappropriate fuel pressure - Faulty fuel injectors - Intake air leaks may be faulty - Exhaust gas leaks
let me condense this. 1: the right bank rear 02 sensors is reading wrong, note I did not say it was bad. dig? 2: this means the CAT on that side, is UNHAPPY.
unhappy can be , as it said air leaks anywhere near the front or rear of Bank 2 CAT. unhappy 2, is the engine fuel controls are totally out of control way rich or lean, out of control; unhappy3, gross misfire, or all the above at once.
the ECU(pcm) at no time ever KNOW what is wrong, it only can flag bad inputs. or tests that fail , tests are called (USA,OBD2 SAE) called Monitors. do you have a full can tool? or just a near useless codereader. ?
The tachometer in your truck is controlled by the Instrument Panel Cluster (IPC) module, which recieves engine speed information from the Powertrain Control Module (PCM) via the digital communications network in your truck.
There may be an engine control problem that is causing your engine to run rough and cause your tachometer to not operate as well. However, there is no way that the tachometer itself is going to make the engine run poorly. The tachometer has no fuse of its own that does not also affect several other electrical circuits in your truck. Looking for the fuse as a possible fix for your problem is totally useless.
What you need to do is to scan your onboard computer network, incluuding the PCM, BCM, IPC and the ABS modules to see where the problem is located. It may even be a communications network error. There is no way of knowing for sure without establishing communications with the network and interfacing with all of the control modules that use the tachometer signal to perform certain functions.
PLEASE NOTE: Generic OBD code readers CANNOT perform the functions that will be needed to diagnose and repair this problem.
The windows are fused directly, they are operated by a computer module known as the "GEM", all the body electrical functions are controlled by this central module, it is fused by about 4 different fuses, but it is very unlikely a fuse is the problem as if it was you would have allot of things not working, windshield wipers for a start as well as the washers. This module can be tested with a special tool that prompts it to operate the many accessories it runs, It then returns fault codes for what is not functioning correctly. More than likely you have a defective GEM control module.
Your P0700 code needs to be addressed right away. This signifies a problem with the solenoid pack, which is an external part that can be fixed for around $200 if you do it yourself, $300 if you take it somewhere. But a bad solenoid pack can mess up the whole tranny resulting in a total rebuild, which runs anywhere from $1200 to $2000 depending on where you go. Your P1770 error is a Clutch Solenoid Circuit Malfunction. Definitely sounds like you have a solenoid problem. Let me know if you have any other questions. Thanks for ranking my response and for using FixYa!