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[aeronik]

hi there..I'm new to the forum but not new to jeep ownership, thi is my third, but his one is giving me greif..... as the subject says it a 04 GC 2.7 crd with a gearbox fault, doing the ignition key dance throws p0702 (transmission control system electrical) and p0836. (4wd switch circuit)

now the symptoms : car starts runs and changes gear fine from cold, then 20-30 mins into a jounrney the MIL light flickers. This gets progressively worse as the journey continue with the gearbox doing all sorts of strange things, like getting stuck in gear or changing gear when it shouldn't. The symptoms definately feel like an intermittent electrical fault.

Has anyone experienced anything like this ? or got any good suggestions on where to start looking. I am a competent mechanic so not afraid to get my hands dirty and oily, but just wont tear into it until I have all the info

failing that of course...anyone know a good indepndant jeep specialist near maidstone ?

[greggmo]

an intro would be nice mate.  maybe a question for Dr mike.

[aeronik]

sorry bout that didnt mean to be rude    


I'll post an intro to say hello

[greggmo]

cool. didnt mean to be blunt but folk just appear and if the first post is to ask help it just seems a bit impolite if ya know what i mean. i am sure Mike will be along to help with your question. welcome to the club.

[Mike Pavelin]

You have a transmission control related fault. The 0702 code covers several potential problems, that code is a warning from the powertrain control module. To go deeper you need to get into the transmission control module with the dealer's DRBIII scan tool.

Symptom List:
P0700-TRANS CONTROL 1-2/4-5 SOLENOID CIRCUIT
P0700-TRANS CONTROL 2-3 SOLENOID CIRCUIT
P0700-TRANS CONTROL 3-4 SOLENOID CIRCUIT
P0700-TRANS CONTROL INTERNAL CONTROLLER
P0700-TRANS CONTROL MOD. PRESS SOLENOID CIRCUIT
P0700-TRANS CONTROL SHIFT PRESSURE SOLENOID CIRCUIT
P0700-TRANS CONTROL SOLENOID SUPPLY VOLTAGE
P0700-TRANS CONTROL TCC SOLENOID CIRCUIT
P0702-TRANS CONTROL ABS SENSOR MESSAGE
P0702-TRANS CONTROL ENGINE T-CASE SWITCH MESSAGE
P0702-TRANS CONTROL IMPROPER GEAR
P0702-TRANS CONTROL IMPROPER RATIO OR TRANSMISSION
SLIPPING
P0702-TRANS CONTROL INTERNAL SHIFTER FAILURE
P0702-TRANS CONTROL N2 OR N3 INPUT SENSOR CIRCUIT
P0702-TRANS CONTROL TCC FAULT
Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0700-TRANS CONTROL 1-2/4-5
SOLENOID CIRCUIT.
POSSIBLE CAUSES
VERIFY CURRENT DTC
TEST ACTION APPLICABILITY
1 NOTE: If DTC P1242 is present with this DTC, perform the diagnostic for
P1242 before continuing.
NOTE: This code was set in the ECM by the Transmission Control Module to
indicate a transmission fault. Diagnosis of transmission faults should be
done using the Transmission Diagnostic Information.
NOTE: When repairs have been completed, the ECM and TCM must have
codes cleared.
Turn the ignition on.
With the DRBIIIt, erase ECM DTCs only.
With the DRBIIIt, read ECM DTCs.
Are any P0700 or P0702 DTCs present in the ECM?
All
Yes ! Refer to Transmission Diagnostic Information for the related
symptom(s).
Perform W5J400 TRANSMISSION VERIFICATION TEST - VER
1.
No ! Test Complete.

[greggmo]

nice one mike. told ya.

[aeronik]

thanks for that mike, as i suspected I need someone with a drb III scantool....is it only the dealers that have them ?

mike: I see from your website that you are not actually that far from me...if you have a DRBIII...do you fancy a diagnostic job tommorow ? (Friday)

[Mike Pavelin]

Sorry, dude, haven't got one.

[Bubba]

i think it means check mayo your runnin out

[FRENCHY GRAND CHEROKEE]

Hi, have you resolve your troubles, cause i've got exactly the same troubles on mine and the sames codes.
code p0702
code P1242
code p0846
And transmition makes stranges things but not all the time.
That be nice to help me.
Thanks.