Input voltage? - Seagate FreeAgent Pro - 500GB, 7200 RPM, USB 2.0, eSATA, External 500 GB Hard Drive

Check for voltage at the headlight connectors with the light switch turned on. If there is voltage but your lights do not illuminate, your bulbs are burned out. If there is no voltage, verify that there is supply voltage at the output of the light switch when lights are turned on. No output voltage, first check continuity between the switch and the lights, then check for voltage at the switch input. If there is input voltage but no output voltage, replace the switch. If there is no input voltage, check the wiring between the fuse panel and the switch.

Sorry Gregory, gave you the wrong number.
You could try something like this. Various voltages and currents with different adapter plugs. This is on Ebay UK but I would think there are others, don't know where you are.
Ebay item number: 201154296095

Specs:
1.Rated Input Voltage: AC 110V or AC240V
2.Vibration Input Voltage Range: AC95V-265V
3.Input Rated Current: 0.4-0.6AMP
4.Input Power: 90W
5.Efficiency: >88%(TYP)
6.Out Power: 90W
7.Output voltage: 15V/16V/18V/19V/20V/22V/24V(0/+0.5V NOLOAD): DC15V-24V
8.Output voltage: 15V/16V/18V/19V/20V/22V/24V(-0.4/0.5V@rating load): DC15V-24V
9.Output current: 15-20V/4.5A@22V-24V/4.0A: 4.5AMP(max)
10.Overload protection: YES
11.Short Circuit Protection: YES

a transistor has 3 leads,[emitter current, collector current, base current, i am going to give you list of options that the transistors can be used for and it depends on the configuration of the circuits.
input resistance, current gain, voltage gain, output resistance, power gain, voltage gain, (input and output power) + [input and output voltage] and {input and output resistance} + input and output power gain.

18 various formulas to a range in groups of 2's

Precor Error 15, AC Input Voltage Too High Probable Cause 1. AC input voltage is incorrect.
2. AC input voltage transients. Transients can be caused by lightning strikes or by other pieces of equipment sharing the unit's AC power.
Corrective Action

1. Verify AC feed into the building's circuit breaker is correct and connected to the proper transformer tap.
2. Ensure the AC grounding for the unit's outlet is good and verify the unit is connected to an isolated and dedicated 20 amp circuit.

Precor Error Code 15

Hello
Check the input voltage to this device. To work properly without any error, the input voltage at load condition [Switch ON condition] should be more than 11.7VDC. If this voltage drops from this threshold, the unit will display 'Low Voltage"
The fault is nothing but with its input voltage itself. OK.

before 1996 they use onboard diagnosis system for jeep.

when you turn on key you need to count check engine light blinks.

here are codes taken from internet.

11* No crank reference signal detected during engine cranking.
12* Direct battery input to PCM was disconnected within the last 50 key-on cycles.
13** No difference recognized between the engine MAP reading and the barometric (atmosphereic) pressure reading at start-up
14** MAP sensor input below minimum acceptable voltage.
or
MAP sensor input above maximum acceptable voltage.
15** No vehicle distance (speed) sensor signal detected during road load conditions.
17* Engine coolant temperature remains below normal operating temperatures during vehicle travel (thermostat).
21** Neither rich nor lean condition detected from the oxygen sensor input.
or
Oxygen sensor input voltage maintained above the normal operating range.
22** Engine coolant temperature sensor input above maximum acceptable voltage.
or
Engine coolant temperature sensor input below minimum acceptable voltage.
23** Intake manifold air temperature sensor input above maximum acceptable voltage.
or
Intake manifold air temperature sensor input below minimum acceptable voltage.
24** Throttle position sensor input above maximum acceptable voltage.
or
Throttle position sensor input below minimum acceptable voltage.
25** A shorted condition detected in one or more of the idle air control motor circuits.
27* Injector #1 output driver does not respond properly to the control signal.
or
Injector #2 output driver does not respond properly to the control signal.
or
Injector #3 output driver does not respond properly to the control signal.
or
Injector #4 output driver does not respond properly to the control signal.
or
Injector #5 output driver does not respond properly to the control signal.
or
Injector #6 output driver does not respond properly to the control signal.
33* An open or shorted condition detected in the A/C clutch relay circuit.
34* An open or shorted condition detected in the speed control vacuum or vent solenoid circuits.
or
Speed control switch input below the minimum acceptable voltage.
or
Speed control switch input above the maximum acceptable voltage.
35* An open or shorted condition detected in the radiator fan relay circuit.
41* An open or shorted condition detected in the generator field control circuit.
42* An open or shorted condition detected in the auto shutdown relay circuit.
44* An open or shorted condition exists in the engine coolant temperature sensor circuit or a problem exists in the PCM's battery temperature voltage circuit.
46** Battery voltage sense input above target charging voltage during engine operation.
47** Battery voltage sense input below target charging voltage during engine operation. Also, no significant change detected in battery voltage during active test of generator output.
51** Oxygen sensor signal input indicates lean air/fuel ratio condition during engine operation.
52** Oxygen sensor signal input indicates rich air/fuel ratio condition during engine operation.
53* PCM internal fault condition detected.
54* No fuel sync (camshaft signal) detected during engine cranking.
55* Completion of diagnostic trouble code display on the malfunction indicator lamp (check engine lamp).
62* Unsuccessful attempt to update SRI (service reminder indicator) miles in the PCM EEPROM.
63* Unsuccessful attempt to write to an EEPROM location by the PCM.

* - Check engine lamp will not illuminate at all times if this code was recorded. Cycle ignition key as described and observe code flashed by check engine lamp.

** - Check engine lamp will illuminate during engine operation if this code was recorded.

PCM = Powertrain Control Module (the engine computer)
MAP = Manifold Absolute Pressure (the sensor that measures how hard the engine is sucking air through the intake manifold
EEPROM = Electrically Erasable Programmable Read Only Memory (a type of computer chip used inside the PCM)

Is the subwoofer a self-powered unit? If yes, it would have a minimal voltage showing on a meter. If the input is a line input, it would not have a problem taking in a line output (not speaker - never!) from your receiver. If the only output you have from your reciever is a speaker out, then purchase an L-Pad type speaker to line matching transformer. You can also take one of the input channels coming from the source and Y out a side to the sub pre receiver, but you then you would need to be able to adjust levels on the subwoofer independently from the receiver.

some info from the manual (636) fault code 15. hope it helps??

Atmo- Absolute Atmospheric If the atmospheric pressure sensor system fails
15
spheric Pressure (the signal is out of the usable range, wiring short
Pressure Pa =100 mmHg - 900 or open), the ECU sets Pa at 760 mmHg (the
Sensor mmHg standard atmospheric pressure).

Atmospheric Pressure Sensor (Service Code 15)
Input Voltage Inspection
NOTE
o Be sure the battery is fully charged.
o The inspection is the same as "Input Voltage Inspection"
of the throttle sensor and the inlet air pressure sensor.
• Turn the ignition switch OFF.
• Remove the ECU (see this chapter). Do not disconnect
the ECU connectors.
• Connect a digital voltmeter [A] to the connector (8), with
the needle adapter set.
Special Tool· Needle Adapter Set: 57001-1457
Atmospheric Pressure Sensor Input Voltage
Connections to ECU
Meter (+) --+ BL lead (terminal 1)
Meter (-) --+ BRISK lead (terminal 14)
• Measure the input voltage with the engine stopped, and
with the connectors joined.
• Turn the ignition switch ON.
Input Voltage at ECU
Standard: 4.75 - 5.25 V DC
*If the reading of input voltage is less than the standard
range, check the ECU for its ground, and power supply
(see this chapter). If the ground and power supply are
good, replace the ECU.
*If the reading is within the standard range, remove the
seat cover, and check the input voltage again at the sensor
connector. *Remove the air cleaner housing (see Air Cleaner Housing
Removal).
• Disconnect the atmospheric pressure sensor connector
and connect the harness adapter [AJ between the main
harness connector and pressure sensor connector.
• Connect a digital meter to the harness adapter leads.
[8] Atmospheric Pressure Sensor
Special Tool - Throttle Sensor Harness Adapter #2:
57001-1408
Atmospheric Pressure Sensor Input Voltage
Connections to Sensor
Meter (+) -l' BL lead [C]
Meter (-) -+ BRISK lead [OJ
• Measure the input voltage with the engine stopped, and
with the connector joined.
• Turn the ignition switch ON.
Input Voltage at Sensor Connector
Standard: 4.75 - 5.25 V DC
*If the reading is out of the standard range, check the
wiring (see wiring diagram in this section).
*11 the reading is good, the input voltage is normal. Check
the output voltage.
• Turn the ignition switch OFF.

Output Voltage Inspection =
• Measure the output voltage at the ECU in the same way °0
as input voltage inspection. Note the following. 8 .~ (j')
Digital Meter (AI ®~O ECU Connector IS]
Atmospheric Pressure Sensor Output Voltage ' 11 .
Meter (+) ~ GfW lead (terminal 4)
Q§
Meter (-) -+ BRiSK lead (termina114) tC·lInn, C ,
Output Voltage
Usable Range: 3.80 - 4.20 V DC at the standard
atmospheric pressure (101.32 kPa, 76
cmHg abs.)
NOTE
o The output voltage changes according to the local at·
mosphen'c pressure.
D The atmospheric sensor output voltage is based on
a nearly perfect vacuum in the smaJl chamber of the
sensor. So, the sensor indicates absolute atmospheric
pressure.
*If the output voltage is within the usable range, check the
ECU for its ground, and power supply (see this chapter). If
the ground and power supply are good, replace the ECU.
*If the output voltage is far out of the usable range, remove
the fuel tank, and check the output voltage at the sensor
connector [A] (when the wiring is open, the output voltage
is about 1.8 V).
• Connect a digital meter [A] to the harness adapter leads.
[8) Atmospheric Pressure Sensor
Special Tool· Throttle Sensor Harness Adapter #2:
57001-1408
Atmospheric Pressure Sensor Output Voltage
Connections to Sensor
Meter (+) -+ GfW lead [C]
Meter (-) -+ BRlBK lead [OJ
Output Voltage at Sensor
Usable Range: 3.80 - 4.20 V DC at the standard
atmospheric pressure (101.32 kPa, 76
cmHg abs)
*If the output voltage is normal, check the wiring for continuity
(see next diagram). *If the output voltage is out of the usable range, replace
the sensor.