U0404 jeep grand cherokee

U0404 and TSB 21-016-06 Jeep

Chrysler has issued TSB 21-016-06 to address a U0404 trouble code on the vehicles listed below. The code is defined as: U0404-IMPLAUSIBLE DATA RECEIVED FROM ESM. You may also see a P0607 trouble code set. The ESM is the electronic shift module (shifter mechanism). The ESM sends digital data on the CAN digital buss to the transmission control module (TCM) to tell it you’ve selected a gear. The U0404 code sets when the TCM detects an incorrect digital signal from the ESM or there’s a problem with the front control module (FCM) or the TCM.

Prior to this TSB 21-016-06, the only fix was to replace the entire ESM . Now Chrysler is making replacement parts available.

Models affected by TSB 21-016-06

2005 – 2007 (WK) Grand Cherokee
2005 – 2007 (WH) Grand Cherokee (International Markets)
2006 – 2007 (XK) Commander
2006 – 2007 (XH) Commander (International Markets)

Fix for U0404

1.Set the parking brake and move shifter to neutral
2. Remove center floor console using the procedures outlined in shop manual
3. Remove shifter Knob and trim mat.
Turn lower chrome ring of shift knob counter clockwise 90°. Pull the knob and the chrome ring off from the lever. Then, using trim stick, remove the trim mat.

1 – SHIFTER BEZEL SCREWS
2 – RUBBER MAT
3 – TRANSFER CASE SWITCH (IF EQUIPPED)
4 – TRANSFER CASE SWITCH SCREWS ON BOTTOM
5 – SHIFTER KNOB
6 – BEZEL WIRING CONNECTOR

4. Then remove Remove The Shifter Bezel. To do that, first disconnect the shifter bezel wiring connector. Then remove the torx bit screws using a TX20 bit. Remove the two bottom screws for Transfer Case (TC) switch using torx bit, and disconnect the TC wiring connector (only on some models). Lift the shifter bezel upwards while making sure the solenoid wiring connector remains in place. You may have to remove the heat duct by pulling to the side to get access to the TC switch screws.

1 – SOLENOID CONNECTOR **PINS**
2 – SLIDER GUIDE AREA REQUIRING REMOVAL
3 – SHAPE OF SLIDER GUIDE AFTER TRIMMING
4 – UTILITY KNIFE/BOX CUTTER

Remove the Trim Slide Guides

Locate slide guides at the rear of the shifter. Then use a box cutter to trim to a smooth transition to the base of the shifter housing.

Reinstall the shifter bezel

Ensure the solenoid connector is seated in the shifter housing and make sure that the connector pins of the interface in the bezel and the wiring connector are both upright and aligned prior to shifter bezel installation. Then align the transportation tube onto the top of the shifter lever, lower the new shifter bezel onto the shift lever and discard the tube. Next, position the shifter bezel on the shifter housing and connector and install the screws in the bin and at the housing. Torque the screws to 1.5 – 2.1 Nm (13.5 – 18.5 in. lbs.).

If equipped, install the TC switch with two screws from the bottom, torque the screws to 0.89 – 1.11 Nm (7.8 – 9.8 in. lbs.). Connect the wiring connector to TC switch. Connect the wiring connector to the shifter bezel.
Ensure cable routing does not interfere with slide guides and slider exit. Install Shift Knob And Trim Mat.

Verify that shifter is in the neutral position

Position knob with chrome ring on lever and seat fully.
Turn lower chrome ring of shift knob clockwise 90°.
Place the trim mat into shifter bezel bin.

Verify the brake transmission shift interlock operation

Verify that the key can only be removed in the PARK position. When the shift lever is in PARK, the ignition key cylinder should rotate freely from ACC to LOCK. When the shifter is in any other gear or neutral position, the ignition key cylinder should not rotate to the LOCK position.

Shifting out of PARK should not be possible when the ignition key cylinder is in the ACC position and the brake pedal is not depressed.

Shifting out of PARK should not be possible while applying normal force on the shift lever and ignition key cylinder is in the ACC, ON, or START positions unless the foot brake pedal is depressed approximately 12mm (1/2 in.).

Shifting out of PARK should not be possible when the ignition key cylinder is in the LOCK position, regardless of the brake pedal position.

Shifting between any gears, NEUTRAL or into PARK may be done without depressing foot brake pedal with ignition switch in ACC, ON, or START positions.

Install the center floor console using the procedures outlined in the shop manual

Part numbers to fix U0404

AR (1) 68004143AC Bezel, Shifter, with A580 Transmission and without Transfer Case Switch
AR (1) 68004144AC Bezel, Shifter, with A580 Transmission and Transfer Case Switch
AR (1) 68004145AC Bezel, Shifter, with 545RFE Transmission and without Transfer Case Switch
AR (1) 68004146AC Bezel, Shifter, with 545RFE Transmission and Transfer Case Switch

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U0404 jeep grand cherokee

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Прошу помочь с советом. Недавно купил Jeep Grand Cherokee Laredo 2007, 3.7l, с «мерсовской» коробкой. На второй день загорелась лампочк «чек энджин». В сервисе (простой автосервис Американок) сказали — ошибка коммуникации между мотором и коробкой передач. Потом, через 7 дней отказал типтроник, ручное понижение. Дней через 7 снова воостановилось все, само по себе. Недавно снова, пропало ручное управление — коробка сама работает отлично, иногда чувствуется некое торможение, как будто сложно переключает с 1-3 скорости.

Наконец нарыл в интернете — моя ошибка идет под кодом U-0404 — эта ошибка говорит о неисправности некого ESM модуля, PRNDL bezel — какой-то.
на www.jeepparts.mopar.com дает два вида «bezel» -ов, для коробок с Quadra Trac II и Quadra Trac I, они сильно отличаются в цене — 745$ и 202$. Вообще существует ли сайт где можно по вин коду узнать все в мелочах о своем автомобиле — какая коробка, какой мотор.

Подскажите, что делать? Может на самом деле проблема в какой-то мелоче?

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Форум Джип тебе в помощь http://wwwboards.auto.ru/jeep/
Там задавай вопрос и скорее всего помогут, хотя бы советом .

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Наконец нарыл в интернете — моя ошибка идет под кодом U-0404 — эта ошибка говорит о неисправности некого ESM модуля, PRNDL bezel — какой-то.

Это не так. Ошибка U0404 действительно относится к коробке NAG-1, но означает «IMPLAUSIBLE DATA RECEIVED FROM ESM». Если это о чём то говорит, то ТСМ выставляет этот код когда видит от ESM несуществующий CAN ID или некорректные данные для существующего.

Чисто теоретически в официальном сервисе должны найти неисправность тем более что официально всего два шага для диагностики:
1. With the scan tool, read FCM DTCs.
2. With the scan tool, read Electronic Shift Module (ESM) DTCs.

Я бы по простому встал щупом осциллографа на CAN шину (на FCM разъём C1 контакты 8 и 9) и посмотрел что происходит с сигналом. Из простого там могут просто окислиться контакты/корпус или где-то передавлен жгут. Из сложного по каким-то причиниам начинает дохнуть CAN на блоке, но я бы отнёс это к маловероятному.

Для справки:
ESM — Electronic Shift Module
TCM — Transmission Control Module
FCM — Front Control Module
DTC — Diagnostic Trouble Code

Источник

U0404 Jeep Grand Cherokee, Jeep Commander

Diagnose and fix U0404 Jeep Grand Cherokee, Jeep Commander

The U0404 Jeep Grand Cherokee, Jeep Commander trouble code is quite common. It’s defined as; U0404 Implausible Data Receiver from ESM.
The electronic shift module (ESM) is located in the console and connects to the shifter mechanism. It reports a digital signal to the transmission control module to tell it which gear you’ve chosen.

Diagnose U0404 Jeep with a scan tool

Connect your scan tool and find which gear the ESM is reporting to the transmission control (TCC). Move the shifter and watch your scan tool to make sure the gear results match what you’ve selected. If there’s a mismatch, the problem is in the ESM.

IF you don’t have a scan tool, you’ll have to assume the problem is with the ESM and either replace it or try to clean the terminals.

What causes U0404 and ESM failure

Because the ESM sits next to the shifter, it collects debris like hair, coffee, soda, dust and dirt. Before replacing the module, remove it and clean it. Use contact cleaner and a pencil eraser to remove all corrosion from the contact terminals.

Next, remove the case of the ESM and check for the presence of soda, coffee, etc. Clean off all traces of debris. Then reassemble, clear the codes and see if they return.

If you can’t clean the ESM, purchase a refurbished unit. The cost less than $200.

Get the BEST auto repair information
Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period. They include wiring diagrams and technical service bulletins.

Pricing:
—Eautorepair.net—
1 month subscription $19.99 per vehicle
1-year subscription $39.99 per vehicle
4-year subscription $59.99 per vehicle
—Alldatadiy.com—
1-month subscription $19.99 per vehicle
1-year subscription $59.99 per vehicle
3-year subscription $129.99

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