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Fault code p1637

No park brake no crooze control no speedometer engine redlight on

Posted by Sifiso Radebe on


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  • Cars & Trucks Master
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I like the spelling of "crooze, I assume you mean cruise?

Posted on Aug 15, 2019


5 Related Answers

David Hartwell

  • 44 Answers

SOURCE: XJR 2004 showing warning on dash engine fault,

That's 3 different ECU's. So look for a common fault. Have you had reason to jump start it before this happened? If the leads were inadvertently put on the wrong way round, this could cause permanent damage to the ECU's. If not, then I would go for an earthing fault. The engine ECU is under the passenger's footwell, trace the black cables to the earthing point, I know the earthing point for the ABS unit is right next to it on top of the chassis rail. Failing any of this, I would then get the fault codes pulled at least for the engine ECU and see what it has to say.

Posted on Jul 31, 2009


Roberta Smith

  • 5158 Answers

SOURCE: engine system fault,park brake fault

4 recalls so far.

unhook the battery for about 15 minutes, that will reset the computer. if you have an anti-theft radio. make sure you know the code first.

Posted on Sep 04, 2009


  • 1 Answer

SOURCE: Engine system fault,park brake faultengine system

how do i fix or reset this fault
Engine system fault,park brake faultengine system fault, park brake fault & dsc not avilable

Posted on Sep 27, 2009


  • 173 Answers

SOURCE: 2002 Chev. C1500HD pickup 6.0 engine has code

the generator / alternator has sensed an improper voltage at the L terminal circut for more than 30 seconds, check terminals for corrosion and or connection.. with the engine running there should be roughly 5 volts at the connector term L and ground, good luck

Posted on Nov 24, 2009


Steve Newton

  • 1140 Answers

SOURCE: I have a 2007 Ram

scan for codes first. sounds like a shorting wire. has vehicle been lifted?

Posted on May 18, 2011

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1 Answer

Parking brake

The 2006 LS has a parking brake that is controlled electronically. When power is lost to the car (battery disconnected etc.) the brake has to be reprogrammed to relearn what position it is in at the time. When this happens the info center up by the speedometer reads "foot on brake." If you depress your brake pedal the message will change to the next step and will walk you through the reprogramming. I believe you activate the parking brake next and then turn it back off and drive around the block, activate again, turn off again and shut down car. When you restart the car the parking brake will be reprogrammed however if you overlook the foot on brake message (like I did for a while) the car will be confused about whether the parking brake is on or off for awhile. This whole process is listed in the owners manual in case I have forgotten any of the steps. Hope this helps.

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My Escape (58K and up to date maintenance) has begun shaking while stopped at redlights. It only occurs after the engine has warmed and disappears as soon as I accelerate or put it into park or neutral....

Try releasing the gas cap and screwing it back in. If the relief valve for the gas vapor canister is clogged, you can build up negative pressure in the gas cap causing difficulty getting fuel at low RPMs.
If releasing the gas cap makes a difference, the fix may be simply making sure the canister orifice is cleared.

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Would a bad input speed sensor make my transmission stop working

absolutely-Correct speedometer / odometer readings, and the speed signal sent to the Engine, Powertrain, and Anti-lock Brake Control Modules. Besides the obvious, these modules affect fuel delivery, engine timing, and automatic transmission shift points-modules have to have accurate information to properly control components.

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Change the speed sensor in the top of the rear differential

Aug 23, 2009 | 1999 Dodge Ram

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Parking brake assembly diagramneeded

Item Part Number Description 1 2553 Rear Disc Brake Caliper 2 4234 LH Axle Shaft 3 2C026 Rear Disc Brake Rotor 4 383609-S Push Nut (2 Req'd each side) 5 2C189 Rear Brake Anti-Lock Sensor Indicator 6A 3912205-56 Nut (4 Req'd) 7 2C220 Rear Wheel Disc Brake Adapter 8 1177 Inner Wheel Bearing Oil Seal 9 390317-S190 Bolt (4 Req'd) 10 1225 Rear Wheel Bearing 11B 2B296 Disc Brake Caliper Locating Pin A Tighten to 27-54 Nm (20-40 Lb-Ft) B Tighten to 26-35 Nm (19-26 Lb-Ft)
The automatic (vacuum) release-type is standard equipment on all vehicles. The automatic vacuum-type parking brake system contains the following features:
  • A parking brake release control motor (2A843) with mounting bracket bolted to the parking brake control .
  • The vacuum-actuated diaphragm within the parking brake release control motor which is connected by a rod to the upper end of the parking brake release vacuum hose (2B653) .
  • The parking brake release vacuum hose which connects the parking brake release control motor to the engine manifold through a vacuum release switch at the steering column tube (3514) .
  • The parking brake release control motor which is actuated to release the parking brake whenever the engine is running and the transmission is in a forward-driving gear.
  • The automatic parking brake control which has a manual release feature that releases the foot parking brake control by applying force to the parking brake control pedal in the "apply" direction to the point of initial application.
  • The parking brake control will return to the full-release position after removing the force.

Apr 14, 2009 | 1994 Lincoln Town Car

1 Answer


Any code's stored in the ABS ? The VSS - vehicle speed sensor is an input to the PCM - engine computer . The PCM sends this info. on the class 2 serial data network to the instrument cluster . The Instrument cluster has a microprocessor that deciphers all relevant data , speedometer , tach , fuel level , temp. etc... an through the use of stepper motors controls the gauges . Do you know what a module serial data network is ? Do you know what computer controlled systems on a automobile are ? The ABS - anti lock brakes need speed info. also , as does the transmission for shifting point's . The parking brake light is more then just to let you know the parking brake is set . ABS problems , low fluid level in the master cylinder will also turn on this light . Having the vehicle hooked up to a professional type scanner should be the first step in the diagnostic process . Check DTC'S , view sensor data parameters .

Engine Coolant Temperature Gage
The IPC displays the engine coolant temperature as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the engine coolant temperature. The engine coolant temperature gage defaults to 100°F (40°C) or below if:
• The PCM detects a malfunction in the engine coolant temperature sensor circuit.
• The IPC detects a loss of class 2 communications with the PCM.

PRNDL Display
The IPC displays the selected gear position as determined by the PCM. The IPC receives a class 2 message from the PCM indicating the gear position. The PRNDL displays blank if:
• The PCM detects a malfunction in the transmission range switch circuit.
• The IPC receives a class 2 message indicating the park position and the column park switch indicates a position other than park such as an open input.
• The IPC detects a loss of class 2 communications with the PCM.
The IPC displays the vehicle speed based on the information from the PCM. The PCM converts the data from the vehicle speed sensor to a 4000 pulses/mile signal. The IPC uses the vehicle speed signal circuit from the PCM in order to calculate the vehicle speed. The speedometer defaults to 0 km/h (0 mph) if a malfunction in the vehicle speed signal circuit exists.

The IPC displays the engine speed based on the information from the PCM. The PCM converts the data from the engine speed sensor to a 2 pulses/engine revolution signal. The IPC uses the engine speed signal circuit from the PCM in order to calculate the engine speed. The tachometer defaults to 0 rpm if a malfunction in the engine speed signal circuit exists.

You could have any one of a number of different thing's causing your problem . Hooking up a scanner probably would point to the gremlin .

012 GM Class II Communications

Jan 15, 2018 | 2003 Chevrolet TrailBlazer

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