Where is the transmission control module (TCM) on a 1999 Jeep Cherokee Sport

english works better,

but P0871







http://www.jeep4x4center.com/knowledge-base/index.htm?utm_source=cj#service





wild guess. missing in my real FSM.

OD Pressure Switch harness is open or shorted

- OD Pressure Switch circuit poor electrical connection

- Faulty OD Pressure Switch

- Internal transmission damage

- Faulty Powertrain Control Module (PCM)

- Faulty Transmission Control Module (TCM)

or read real jeep post

like here.



http://www.pirate4x4.com/forum/jeep-non-hardcore/923294-p0871-2002-grand-cherokee.html

possible causes
Shorted or open circuit within Transmission Control Module (TCM)
- Faulty Transmission Control Module (TCM)
symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Driveability problems
- Transmission shifting problems
p0700 description
The transaxle Control Module (TCM) monitors the malfunction of sensors and actuators relating to transaxle control. When the TCM detects a malfunction with the control, a signal is send to the Engine Control Module (ECM) to trigger the Engine Light or Service Engine Soon light. The ECM stores the P0700 code and it means the TCM detected a malfunction with the transaxle controls.

Read more: http://engine-codes.com/p0700_jeep.html#ixzz2hihK6PVo

Hello
The Engine and Automatic Transmission (not applicable to manual transmissions) in this vehicles drive train are fully electronically controlled by a computer called the PCM and TCM (Power Train Control Module, Transmission Control Module). When a problem like this or other drive-ability related problems occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM. Also always check fuel pressure for correct spec for your make and engine type.

P0725 JEEP Description The Engine Control Module (ECM) monitors the engine speed through the Crankshaft Position (CKP) sensor with the engine running, and send signal to the Transmission Control Module (TCM).
The code is set when the TCM does not get an engine speed signal from the ECM.
Could be a problem with either computer, the link between the two, or the crank sensor.

Read more: http://engine-codes.com/p0725_jeep.html#ixzz21kbHJXdi

Transmission tcm relay or tcm trans control module

TCM (transmission control module)

Flashing the trans is reprogramming the Transmission control module. The TCM controls when the transmission shift according to road speed, throttle input and engine load.

P0700 is a code that tells u the TCM [transmission Control Module] has requested that the PCM [Powertrain Control Module] turn on the check engine light, u now need to ge the TCM tested for the transmission fault code(s) that were stored when the check engine light was turned on by the TCM through and by the PCM

Sir,
check this link for ur problem
Under the hood on the driverside of the cherokee is the PCM or Powertrain Control Module. The Transmission Control Module or TCM is under the dash on the driverside. It's actually kinda of small, I would guess 4 inches by 3 inches. with what look like wings coming off the sides and two bolts. 

link 2


Thanks Good Luck
Appreciate to rate as "Fixya"