Question about APC Symmetra PX Power Module

1 Answer

We get power module failure signal. however, when we check the status of that power modules , it say off and ok. what does it mean????

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Scholar:

    An expert who has written 20 answers of more than 400 characters.

    New Friend:

    An expert that has 1 follower.

  • Expert
  • 129 Answers

Hi,

You may have a bad power module somewhere in that unit but not that one... and you will need to turn it on -- rotate the chrome knob on the right of the power module in order to turn it on. It should say 'ON AND OK' or 'ON, FAULT'.

Let me know what happens.

If you need UPS, Surge, or Power Related help contact:
Daniel with Power & Systems Innovations 800.260.2259 or go to our website: http://psihq.com/
•• If this helped - click YES :) ••

Posted on May 29, 2014

2 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

vittala
  • 318 Answers

SOURCE: we have a symmetra px

bridge failure
replace

Posted on Jun 26, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My Cadillac 2004 cts dashboard lights come on but it want crank I need help


Your best bet would be to take your vehicle to the dealer ! You have no idea of the complexity involved in the starting of this vehicle ! The computer contols and serial data network etc....
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the DIM. The PMM receives 2 signals from the ignition switch.
To determine the correct power mode the PMM uses the following circuits:
• Accessory voltage
• Run/Crank voltage

Table 1: 2-Wire Ignition Switch Table
The body control system consists of the following 2 modules:
• The Dash Integration Module (DIM)
• The Rear Integration Module (RIM)
Each of the 2 body control modules integrate a number of functional systems. Each module is connected to the class 2 serial data circuit, many of the control signals are implemented by class 2 messages.
Serial Data Messages
The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid PMM message until they can check for the engine run flag status on the serial data circuits. If the PMM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is True, indicating that the engine is running, the modules fail-safe to RUN. In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is False, indicating that the engine is not running, the modules fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals
Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid PMM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, battery positive voltage, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.


Honestly ,there is nothing you can do ! The dealer has the factory scan tool an service info. to diagnose this quickly . The only thing you would be able to do is guess as to what the problem is ,and it would be wrong .

Jun 05, 2017 | Cadillac Cars & Trucks

1 Answer

2007 mercury mountaineer wrench light lit. what is that mean?


Wrench Warning Indicator (Base Instrument Cluster)
The instrument cluster receives the powertrain status from the PCM over the HS-CAN. When a powertrain system concern is detected, the PCM sends the instrument cluster a command signal to illuminate the wrench warning indicator. If the 4WD control module detects a failure with the 4WD drive system, the 4WD control module sends a message to the instrument cluster over the CAN to illuminate the wrench warning indicator. On 4.6L engines, if the transmission control module (TCM) detects a failure with the transmission, the TCM sends a message to the instrument cluster over the CAN to illuminate the wrench warning indicator.

It means a trip to the dealer or some other qualified repair shop .

May 21, 2017 | Mercury Cars & Trucks

1 Answer

How to replace starter switch assembly in 2001 pontiac bonneville


Starter switch ? You do mean ignition switch , the thing on the dash or steering column that you stick the key in ! You car not starting ? The ignition switch isn't the same anymore , sends Discrete Ignition Signals to a module ,in the case of your vehicle it is the DIM - dash integrated module.
The body control system consists of the following 3 modules:
?€¢
The dash integration module (DIM)


?€¢
The instrument panel integration module (IPM)


?€¢
The rear integration module (RIM)

Each of the 3 body control modules integrate a number of functional systems under the control of a single module. Each of the modules are connected to the Class 2 serial data line; many control signals are implemented by Class 2 messages.
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the DIM. The PMM receives 4 signals from the ignition switch.
To determine the correct power mode the PMM uses the following circuits:
?€¢
Accessory voltage


?€¢
Ignition 1 voltage


?€¢
Ignition 3 voltage


?€¢
Off/Run/Crank voltage


Your best bet would be to take to a repair shop that has knowledge of this type system . You probably don't need an ignition switch.
Discrete Ignition Signals Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid PMM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, battery positive voltage, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.

Oct 04, 2016 | 2001 Pontiac Bonneville SLE

1 Answer

How do you replace the ignition switch on a 2002 buick century?


What do you mean no sound when turning key ? Does the car start an run ? Or the car doesn't crank ? Ignition switch's do not work the same way they did in the old days , especially on GM vehicles . The ignition switch is an input to the BCM - body control module , the BCM processes these inputs an then energizes relays to turn things on . Also sends messages to other modules for them to turn on or energize relays .
The power mode signal may be as simple as a B+ input wired to a particular ignition switch contact. If this is also the B+ supply to the module/device, the module/device will only operate with the ignition contact closed to B+. An example of this is the starter relay when it is wired directly to the CRANK/START contact of the ignition switch. When the CRANK/START contacts are closed, the starter relay is energized and provides a current source to the starter and starter solenoid. When the ignition switch leaves the CRANK/START position, the switch contacts open and the starter relay is de-energized. This removes the current source from the starter and solenoid and the starter operation stops.
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the Body Control Module (BCM). The BCM receives 4 signals/circuits from the ignition switch. These are the Ignition 0, Ignition 1, Crank and Accessory 1 ignition switch signals/circuits.
To determine the correct power mode the BCM uses:
?€¢
The state of these signals/circuits, either switch closed (B+ = 1) or switch open (open = 0)


?€¢
The sequence of switch closures received by the BCM


?€¢
The status of the engine run flag.


Important: Any ignition switch states not covered in this table indicates a DTC setting situation.
The chart indicates the modes detected and transmitted by the BCM:
Power Mode Selected/Expected
Engine Run Flag Serial Data
Sampled Ignition Signal State
Power Mode State
Accessory
Ignition 0
Ignition 1
Crank
OFF-LOCK
0
0
0
0
0
OFF
Accessory
0
1
0
0
0
ACCESSORY
RAP
0
1 to 0
0
0
0
RAP
OFF-UNLOCK
0
0
1
0
0
UNLOCK
RAP
0
1 to 0
1
0
0
RAP-UNLOCK
Run
0
1
1
1
0
RUN
Crank
0
0
1
1
1
CRANK
Crank
1
0
1
1
1
CRANK
Run
1
1
1
1
0
RUN
Fail-safe Operation
Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the BCM fail to send a power mode message. The fail-safe plan covers modules with discrete ignition signal inputs as well as those modules using exclusively serial data control of power mode.
Serial Data Messages The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid BCM message until they can check for the engine run flag status on the serial data circuits. If the BCM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is True, indicating that the engine is running, the modules fail-safe to "RUN". In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is False, indicating that the engine is not running, the modules fail-safe to "OFF-AWAKE". In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid BCM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, B+, the modules will fail-safe to the "RUN" power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to "OFF-AWAKE". In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
You probably won't understand any of this info. your best but would be to take it to a qualified repair shop that has proper diagnostic test equipment !

Sep 29, 2016 | Buick Cars & Trucks

1 Answer

Ignition switch for 2003 malibu ls


Ignition switch ? Key an lock cylinder or the electrical part ? The vehicle keeps running or you can't turn key to off ! Different thing's come into play depending on which is your problem ! If vehicle doesn't shut off (keeps running ) You need to know how it works !
An ignition switch isn't the same as back in the old days , it's a low voltage input to the BCM .
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the Power Mode Master, PMM. On this vehicle the PMM is the BCM. The PMM receives 3 discreet ignition switch signals to differentiate which power mode will be sent over the Class 2 Serial Data circuit.
To determine the correct power mode the PMM uses the following circuits:
?€¢
Ignition 0


?€¢
Ignition 1 voltage


?€¢
Ignition 3 voltage


An you need a professional scan tool to deal with these problems !
Serial Data Messages The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid PMM message until they can check for the engine run flag status on the serial data circuits. If the PMM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is True, indicating that the engine is running, the modules fail-safe to RUN. In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is False, indicating that the engine is not running, the modules fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid PMM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, battery positive voltage, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.

Aug 31, 2016 | 2003 Chevrolet Malibu

1 Answer

I have no spark on my Yamaha virago XV 700. New coils, had stator check and its good. So what is wrong? Please help.


So you checked the stator (you mean pick up coil) that sends a signal back to the ignition module to trigger the spark by opening the circuit which causes the coil to induce a charge/spark. Are you sure they were properly checked and are in time. Is the gap ok? If you think all is ok now you should check your grounds (coils and ignition module if it is the grounded type). Check all wires to and from the ignition module. Do you have power to the ignition module, coils etc. If all this is ok then you will have to try a new ignition module. I hope this helps. Rod

Aug 08, 2015 | Yamaha Motorcycles

1 Answer

I have a 2009 g envoy and when I turn my key it wont do anything.replaced the ignition switch and it has worked fine for about 5 months and now it is doing the same thing sometimes it will start right


On GM vehicles starting back in mid 2000's , maybe even before that. They started using inputs to the body control module from the ignition switch, from there the BCM controls all vehicle systems .
Power Mode Description and Operation
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the body control module (BCM). The BCM uses 3 signals from the ignition switch. These are the Ignition 0, Ignition 1, and Accessory.
To determine the correct power mode the BCM uses:
?€¢
The state of these signals


?€¢
The sequence of switch closures received by the BCM


?€¢
The status of the engine run flag

The chart indicates the power modes detected and transmitted by the BCM:

Correct Ignition Switch Inputs
Ignition Key Position

Power Mode Parameter

Engine Running

Sampled Ignition Signal State

Accessory

Ignition 1

Ignition 0
OFF
Off-Awake or RAP
No
Inactive
Off
Off
UNLOCK
Unlock or RAP Unlock
No
Inactive
Off
On
ACC
Accessory
No
Active
Off
On
ON
Run
No
Active
On
On
START
Crank
No
Inactive
On
On
ON
Run
Yes
Active
On
On
Fail-safe Operation
Since the operation of the vehicle systems depends on the power mode, there is a fail-safe plan in place should the body control module (BCM) fail to send a power mode message. The fail-safe plan covers modules with discrete ignition signal inputs as well as those modules using exclusively serial data control of power mode.
Serial Data Messages The modules that depend exclusively on serial data messages for power modes stay in the state dictated by the last valid BCM message until they receive the engine status from the powertrain control module (PCM). If the BCM fails, the modules monitor the serial data circuit for the engine run flag serial data. If the engine run flag serial data is true, indicating that the engine is running, the modules fail-safe to Run. In this state the modules and their subsystems can support all operator requirements. If the engine run flag serial data is false, indicating that the engine is not running, the modules fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
Discrete Ignition Signals Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid BCM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, B+, the modules will fail-safe to the RUN power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to OFF-AWAKE. In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
You would need a scan tool that can read data from the BCM . What may be the problem is a lose connector , these pin's at connectors are tiny and doesn't take much for one to become lose.

Jan 16, 2015 | 2009 GMC Envoy

1 Answer

Sometimes my 2001 Chevy Tahoe has no power at all nothing, then everything goes back on then it will start


How are battery an connections ? Do the headlamps work when this happens ? How familiar are you with the electronic on your vehicle ?
This could be an ignition switch problem , a BCM - body control module , The ignition switch is a Discrete Ignition Signal to the vehicle BCM body control module . The Body Control Module (BCM) performs multiple body control functions. The BCM can control devices directly connected to its outputs based on input information. The BCM evaluates this information and controls certain body control systems by commanding outputs on or off. The BCM control inputs can be:
GM has had a problem with ignition switches , but the thing to do is hook up a scan tool an check for the correct power mode .
Serial Data Power Mode
On vehicles that have several control modules connected by serial data circuits, one module is the power mode master (PMM). On this vehicle the PMM is the Body Control Module (BCM). The BCM receives 2 signals/circuits from the ignition switch. These are the Ignition 1 and Ignition 3 signals/circuits.
To determine the correct power mode the BCM uses:
?€¢
The state of these signals/circuits, either switch closed (B+ = 1) or switch open (open = 0)


?€¢
The status of the engine run flag.

The chart indicates the modes detected and transmitted by the BCM:
Those modules that have discrete ignition signal inputs also remain in the state dictated by the last valid BCM message received on the serial data circuits. They then check the state of their discrete ignition input to determine the current valid state. If the discrete ignition input is active, B+, the modules will fail-safe to the "RUN" power mode. If the discrete ignition input is not active, open or 0 voltage, the modules will fail-safe to "OFF-AWAKE". In this state the modules are constantly checking for a change status message on the serial data circuits and can respond to both local inputs and serial data inputs from other modules on the vehicle.
You may want to take this to the repair shop an that doesn't necessarily mean the dealer !

Jun 29, 2014 | 2001 Chevrolet Tahoe

1 Answer

Cooling fan does not run?


At the main fuse and relay box, check the 30A EGI INJ fuse. If OK, the main relay closes to apply power to the cooling fan relay. Next, check the 30A FAN 1 and FAN 2 fuses.If OK, power is being applied to the fan control module. The PCM processes engine coolant temperature sensor input and sends a signal to the fan control module which, in turn, causes the cooling fan motor to operate. Fan failure could be caused by malfunction of the cooling fan relay, the fan control module, the engine coolant temperature sensor, the cooling fan motor itself, or the PCM

Oct 06, 2012 | 2005 Mazda MPV

1 Answer

Where is the turn signal module on an 05 Malibu?


The modual is the trun signal it's self. Other than that it runs through the BCM and that distributs the power to the lamps.
Do the indiactors on the dash light up at all? Or do you just hear a clicking noise?

Dec 23, 2009 | 2005 Chevrolet Malibu Maxx

Not finding what you are looking for?
APC Symmetra PX Power Module Logo

Related Topics:

675 people viewed this question

Ask a Question

Usually answered in minutes!

Top APC Computers & Internet Experts

Shawn DuRee

Level 3 Expert

355 Answers

Cindy Wells

Level 3 Expert

5062 Answers

Electro Med Services...
Electro Med Services...

Level 3 Expert

6694 Answers

Are you an APC Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...