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I scanned my bmw 2007 328IA coupe , and it showed p0597 , cruise control circuit open ?!

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A couple of possibilities, the most common is brake light switch on brake pedal. Switch or actual wires have come off - check that first. Then check connections on your cruise control unit, they corrode over time and lose contact

Posted on Jan 03, 2011

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Posted on Jan 02, 2017

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2005 trailblazer cruise control not working or the cruise control light not working


Which engine does your trailblazer have 5.3 or 4.2 L
Cruise Control Description and Operation (5.3L)
Cruise Control Description and Operation (4.2L)
makes a difference ! The best way to start diagnostic's is with a scan tool . May have DTC'S diagnostic trouble codes .
DTC P1574 Stop Lamp Switch Circuit
DTC P0568 Cruise Control Set Switch Circuit
DTC P0567 Cruise Control Resume Switch Circuit
Plus with a scan tool you can see if the cruise control switch is inputing to PCM. Data list .
The cruise control resume/accel switch is an input to the powertrain control module (PCM). The PCM uses the cruise control resume/accel switch signal circuit in order to detect when the driver has requested to accelerate the set vehicle speed or to resume the cruise control system. The PCM detects a voltage signal on the cruise control resume/accel switch signal circuit when the switch is applied. This DTC sets if the PCM senses voltage on the cruise control resume/accel switch signal circuit for longer than 90 seconds.
Cruise Control Indicator Inoperative (4.2L)
Turn OFF the ignition.
Install a scan tool.
Turn ON the ignition, with the engine OFF.
With the scan tool, Command the Cruise Control Lamp Test parameter ON, in the instrument panel cluster (IPC) Output Controls.
Does the Cruise indicator illuminate in the IPC?
YES - Go to Step 3
no - Go to Step 4
3
Inspect for poor connections at the harness connector of the powertrain control module (PCM). Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
YES - Go to Step 7
NO - Go to Step 6
4
Inspect for poor connections at the harness connector of the IPC. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
YES - Go to Step 7
NO - Go to Step 5
5
Replace the IPC. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
YES - Go to Step 7
--
6
Replace the PCM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
Go to Step 7
--
7
Operate the system in order to verify the repair.
Does the system operate properly?
System OK
Go to Step 2

Cruise Control Inoperative/Malfunctioning (4.2L)

Install a scan tool.
Turn ON the ignition, with the engine OFF.
Press the cruise ON/OFF switch OFF.
With the scan tool, observe the Cruise ON/OFF switch parameter in the powertrain control module (PCM) Cruise Control Data list.
Does the Cruise ON/OFF switch parameter display OFF?

Your best bet mite be to take your vehicle to the dealer .

Dec 24, 2016 | Cars & Trucks

1 Answer

I got a p0597 code on my 2012 bmw 328i


That is a code for the electronically controlled engine thermostat. Have checked asap before you do very expensive damage to your engine.

Jul 26, 2016 | 2012 BMW 3 Series 328i Sedan 2.0L 4-cyl....

1 Answer

Engine trouble codes


Hi CJ-
For many years now, engine codes have been standardized throughout the automotive industry to ease in vehicle diagnostics-so these codes are the same regardless of the maker of your car.
I use a site "engine-codes.com", to look these up on line. This is an excellent site since it not explains the code, but also troubleshooting methods for mechanics to fix the problem. For ease of information, I have provided the links for the codes you listed.
It sounds as though you may have issues with your O2 (oxygen sensor) which monitors the combustion and emissions system in your car.
Though rates vary from shop to shop, this should not be a wallet busting repair if replacement is needed.
P0597 MINI Thermostat Heater Control Circuit Open P0036 HO2S Heater Control Circuit Bank 1 Sensor 2 P0037 HO2S Heater Control Circuit Low Bank 1 Sensor 2

Apr 01, 2014 | Mini Cooper Cars & Trucks

1 Answer

P0597 code


P0597 Thermostat Heater Control Circuit/Open


Circuit/System Description

The engine control module (ECM) controls the pulse width modulated (PWM) thermostat. The thermostat controls coolant flow and regulates the engine operating temperature. Ignition voltage is supplied directly to the thermostat. The ECM controls the thermostat by grounding the control circuit with a solid state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage. The ECM can determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage.

Aug 25, 2013 | 2009 Pontiac G3

1 Answer

Cruise control won't turn off


by cruise control being PCM control have dealership code scan see what causing cruise control turn itself on.

Apr 18, 2013 | Infiniti Cars & Trucks

1 Answer

I have a 2006 bmw 325i 3.0L E90. Car has been overheating and got a code of P0597 Thermostat Heater control circuit open. I replaced the thermostat with a new aluminum Wahler unit. Just drovve it for 10...


IT sounds like heater control valve not thermostat. Check Pelican Parts.com or BavAuto.com for tech advise & tips. Also check RealOem.com (enter your cars specs and you will see exploded diagrams)

Apr 04, 2011 | BMW 325 Cars & Trucks

1 Answer

Trouble codes p0597 and p0015 what they mean


po597 did not see poo15 is camshaft b position timing over retarded or performance problem bank 1. have pcm check sound like its in limp mode.

May 29, 2009 | 2006 BMW 3 Series

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