Question about 2004 Dodge Ram 1500

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P0703 - 2004 Dodge Ram 1500

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The PCM monitors changes in input voltage from the brake switch. If the PCM does not detect PCM terminal 1AU voltage changes while alternately accelerating and decelerating 8 times, the PCM determines that brake switch circuit has malfunctioned.

• Brake switch malfunction
• Poor connection of brake switch connector or PCM connector
• Short to power supply in wiring harness between brake switch terminal D and PCM connector terminal 1AU
Open circuit in wiring harness between brake switch terminal D and PCM connector terminal 1AU
• Open circuit in wiring harness between battery positive terminal and brake switch terminal A
• PCM malfunction

Do you have an immobilizer on this truck? Possible short circuit? Do you have added trailer wiring on this truck? Possible short circuit? Are your brake lights working normally? If not, is the brake light fuze OK?

Posted on Jan 04, 2011

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Posted on Jan 02, 2017

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My car is a 2006 forenza it wont shift into overdrive unless i push the hold button but if you leave it on and slow down it has no power any help mine


you sound like guy that works FSM free,?
no books. why do that ,? (pain)
i guess you get scan codes. and above is wrong. P0703. is it.?
post the full codes, all of them all DTCs stored.
then look them up in the FSM and what does it says.
it tells you, to do more tests. to find true cause.

my guess, you never said
car drives prefect,
the CEL glows, or the scan tools shows MIL active.
right>?
the hold is for ice.
the hold prevents down shifts (dangerous) on ICE.

with most feature of the TCM (tranny brain) lots of failures
cross over. to shifting.
lots.
like engine overheated
engine overloaded.
engine speed,
brakes on or off.
cruise controls
traction. and ABS.
direction controls. (if present)

so stop ignoring those codes and fix what it told you to fix
fix the what is it, P0703...
???

the recall (sic) TSB TS-09-03129R
summary:Suzuki vehicles: automatic transmission shift lever is loose in the shift gate and/or ignition key cannot be removed. The transmission gear shift lever does not hold firmly to the left of the shift gage as expected.


and the 703, dont lie. it told you its fails and you ignored this fact.

http://www.aboutautomobile.com/DTC/P0703

it's bad, replace or recalibrate the switch.
and on newer cars the switch may need calibration after the replacement.
owning a Chapter 11 car company car is a PITA.

id sell it. i would and get a Toyota.



Aug 11, 2014 | 2006 Suzuki Forenza

1 Answer

P0703


scan it.
use a real scan tool
then look up the DTCs
in the FSM.
or at alldata.com
it tells you the tests to do ,for each failed DTC
RTM
its non-trival. and no AI,

Apr 02, 2014 | 2007 Suzuki Forenza Sedan

1 Answer

Brake light switch


code p0703 refers to torque converter / brake switch B--circuit malfunction===causes--wiring--torque converter/ brake switch--ECM/TCM. The problem may not be in the brakes circuit but in the torque converter sensors.

Oct 22, 2013 | Dodge Avenger Cars & Trucks

1 Answer

Check Engine light with code P0703


About $20 for a new brake light switch that can be installed in about 15 minutes or less usually, may be good insurance for a long distance drive. The code doesn't say it's a switch malfunction, the computer has seen a fault in the brake switch circuit and set the code-could just be a poor connection there.
More important, how do the brake lights work? I think I'd buy the switch or check the connector by the pedal at least. The computer may not let the cruise control work because of the code.

Jul 14, 2012 | 2003 Dodge Neon

1 Answer

Pontic check engine code P0703


Hi the code P0703 is Brake switch B circuit malfunction. I`m not sure if this means the brake switch
is faulty or the wiring to it is faulty.
The brake switch is the best place to start ( but check the connections to the switch )
I hope i have been of help to you.
john ( South Wales UK )

Jun 30, 2011 | 1994 Chevrolet Lumina APV

1 Answer

Ihave code p0703 brake switch,what can I do?


P0703 (M) Brake Switch Stuck Pressed or Released Incorrect input state detected in the brake switch circuit (Changed from P1595).

The switch cost like 20 bucks. It is located on the brake pedal, it will either be in front of or behind the pedal at the top. It will have a plunger that contacts the pedal, and an electrical pig tail. usually you just twist it and pull it out kinda like a headlamp.

Hope this help (remember rated and comment this).

Mar 29, 2010 | 2000 Dodge Neon

1 Answer

What do the codes p 1864 and p 0703 mean?


P1864 Torque Converter Clutch Circuit
P0703 Brake Switch Circuit Malfunction

Feb 10, 2010 | 1999 Dodge Intrepid

1 Answer

Car runs just fine and the check engine light came on. the code is p0703. anyone know what this means? Thanks


torque converter / brake switch b circuit malfunction -- check ur brake light switch may be going bad or connection problem

Jan 20, 2010 | Plymouth Neon Cars & Trucks

1 Answer

Where is located Brake Switch on mazda 6i v6 2005 problem:they have the code P0703


The break switch is located on the metal bar of the break pedal..

Have a great day !

Nov 11, 2009 | 2005 Mazda 6

1 Answer

Hi there,engine warning light stays on , code p0703 displayed,thanks


Start by checking your brake switch to see if there's a malfunction
Then check your wiring and connectors.
Then if all is good. You may need to check your PCM

Oct 05, 2009 | 1993 Jeep Grand Cherokee

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