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Voltmeter connected in series

Danqq for ur reply

but wen the voltmeter is connected in series wat will it show ?
which readings will it show?

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When you connect a voltmeter in series, it will smoke. read "zero"
you need a ampmeter to connect in series.

Posted on Jan 30, 2009

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One way to be sure the gauge is right is to put a voltmeter on the battery with engine running. If the voltmeter reads under 13 volts, alternator is not working. Voltmeter should read 13.5 volts up to about 14.5, in that range. If the alternator is not working, check for a blown alternator fuse in the power distribution box, and recheck alt. and batt. connections. A loose connection anywhere there will prevent alternator from working.

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Troy bilt pony will not start. replaced 20 amp fuse and battery


OK -- Here's what to do:
TROY-BILT PONY LT CRANKING CIRCUIT TROUBLESHOOTING

NOTE 1: The following tests are to be made with the parking brake applied and the PTO disengaged unless otherwise specified.

NOTE 2: These tests need only be made until the cause of the problem is located. The entire process need not be completed if the problem has been resolved.

NOTE 3: Refer to the wiring diagram below for understanding of all tersts.

NOTE 4: Wiring Diagram references to Key switch A1 and L terminals refer to the same terminal.

1. With all circuits connected normally, connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the battery positive terminal. The voltmeter should read at least +12.6 VDC.
a. If NO, go to step 2.
b. If YES, go to Step 3.

2. Connect a DC voltemeter directly across the battery. The voltmeter should read at least 12.6 VDC.
a. If NO, charge or replace the battery.
b. If YES, check and repair/replace the following items as required, then repeat Step 2 test. If YES on retest, go to Step 3.
-- battery negative cable condition
-- battery negative cable connections at the battery
-- battery negative cable connections at the tractor frame

3. With all circuits connected normally, connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the key swttch "B" terminal (Circuit #97 - red/white wire). The voltmeter should read at least +12.6 VDC.
a. If NO, go to step 4.
b. If YES, go to Step 8.

4. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the starter relay BAT terminal (Circuit #94 - heavy red wire). The voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 4 test. If YES on retest, go to Step 5.
-- battery positive cable condition
-- battery positive cable connections at the battery
-- battery positive cable connection at the starter relay
b. If YES, go to Step 5.

5. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the fuse holder BAT terminal (Circuit #92 - red wire). The voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 5 test. If YES on retest, go to Step 6.
-- Circuit 92 wire condition
-- Circuit 92 wire connection at the starter relay
-- Circuit 92 wire connection at the fuse holder
b. If YES, go to Step 6.

6. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the fuse holder protected circuit terminal (Circuit #97 - red & white wire). The voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 6 test. If YES on retest, go to Step 7.
-- 20A fuse condition
-- fuse holder condition
-- fuse holder wire connections
b. If YES, go to Step 7.

7. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the key switch "B" terminal (Circuit #97 - red & white wire). The voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 7 test. If YES on retest, go to Step 8.
-- Circuit 97 wire condition
-- Circuit 97 connection at fuse holdser
-- Circuit 97 connection at key switch
b. If YES, go to Step 8.

8. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the key switch "S" terminal (Circuit #80 - orange wire). With the key held in the START position, the voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 8 test. If YES on retest, go to Step 9.
-- key switch assembly
b. If YES, go to Step 9.

9. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the parking brake switch Circuit #80 terminal (Circuit #80 - orange wire). With the key held in the START position, the voltmeter should read at least +12.6
VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 9 test. If YES on retest, go to Step 10.
-- Circuit 80 wire condition
-- Circuit 80 connection at key switch
-- Circuit 80 connection at parking brake switch
b. If YES, go to Step 10.

10. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the parking brake switch Circuit #70 terminal (Circuit #70 - orange & black wire). With the key held in the START position, the voltmeter should read at
least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 10 test. If YES on retest, go to Step 11.
-- parking brake switch assembly mounting and adjustment
-- parking brake switch assembly condition
b. If YES, go to Step 11.

11. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the PTO switch Circuit #70 terminal (Circuit #70 - orange & black wire). With the key held in the START position, the voltmeter should read at least +12.6
VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 11 test. If YES on retest, go to Step 12.
-- Circuit 70 wire condition
-- Circuit 70 connection at parking brake switch
-- Circuit 70 connection at PTO switch
b. If YES, go to Step 12.

12. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the PTO switch Circuit #60 terminal (Circuit #60 - orange & white wire). With the key held in the START position, the voltmeter should read at least +12.6
VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 12 test. If YES on retest, go to Step 13.
-- PTO switch assembly mounting and adjustment
-- PTO switch assembly condition
b. If YES, go to Step 13.

13. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the starter relay Circuit #60 terminal (Circuit #60 - orange & white wire). With the key held in the START position, the voltmeter should read at least
+12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 11 test. If YES on retest, go to Step 14.
-- Circuit 60 wire condition
-- Circuit 60 connection at PTO switch
-- Circuit 60 connection at starter relay
b. If YES, go to Step 14.

14. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the starter relay MOT terminal (Circuit #93 - heavy red wire). With the key held in the START position, the voltmeter should read at least +12.6 VDC.
a. If NO, did the relay make a single heavy "click" noise?
1. if YES, replace the starter relay and repeat Step 14 test. If YES on retest, go to Step 15.
2. If NO, connect a DC voltmeter DC voltmeter black (NEG) lead to the battery negative terminal and the red (POS) lead to the starter relay frame. With the key held in the START position, the voltmeter should read a maximum of +0.1 VDC.
a. If YES, replace the starter relay and repeat Step 14 test. If YES on retest, go to Step 15.
b. If NO, check and repair/replace the following items as required, then repeat Step 14 test. If YES on retest, go to Step 15.
-- starter relay mounting
b. If YES, go to Step 15.

15. Connect a DC voltmeter black (NEG) lead to the tractor frame and the red (POS) lead to the starter motor BAT terminal (Circuit #93 - heavy red wire). With the key held in the START position, the voltmeter should read at least +12.6 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 15 test. If YES on retest, but the starter motor does not engage, go to Step 16.
-- Circuit 93 cable condition
-- Circuit 93 cable connection at starter relay
-- Circuit 93 cable connection at starter motor
b. If YES, but the starter motor does not engage, go to Step 16.

16. Connect a DC voltmeter black (NEG) lead to the battery negative terminal and the red (POS) lead to the starter motor frame . With the key held in the START position, the voltmeter should read a maximum of +0.2 VDC.
a. If NO, check and repair/replace the following items as required, then repeat Step 16 test. If YES on retest, but the starter motor does not engage, go to Step 16b.
-- starter motor mounting to engine
-- engine mounting to tractor frame
b. If YES, but the starter motor does not engage, replace the starter motor.


REFERENCE PART NUMBERS PER WIRING DIAGRAM:

Note that your specific tractor may use differnt part numbers. You can obtain a Parts List specific to your tractor online, at no charge, from Troy-Bilt at www.troybilt.com -- your full model number and serial number are required.

Key Switch 725-04228 (common alternatives are 925-04227B & 925-04659)Parking Brake Switch 725-1657A (common alternative is 725-04363)
PTO Switch 725-1657A (common alternative is 725-04363)
Starter Relay 725-04439

Also note that the starter motor is an engine manufacturer supplied part.



7_20_2012_4_14_09_pm.jpg

Jul 19, 2012 | Troy Garden

1 Answer

Check engine light for volvo 850 wont go off wat else can be the problem if i got a full tune up and put in new spark plugs plus it trembles alot and it shakes when i start it up plus wen i put it on...


Hi, I recommend you access the OBD panel to extract the trouble codes. Then send us the trouble codes for further advice. On 850 models the DLC is located in the engine compartment in front of the module box, behind the passenger side headlamp.

  1. Open diagnostic socket cover and install selector cable into socket No. 2 for fuel injection codes or socket No. 6 (except Motronic systems) for ignition codes.
  2. Turn the ignition switch to the ON position.
  3. Enter control system 1 by pressing the button once. Hold the button for at least 1 second, but not more than 3.
  4. Watch the diode light and count the number of flashes in the 3 flash series indicating a fault code. The flash series are separated by 3 second intervals. Note fault codes.

1f there are no fault codes in the diagnostic unit, the diode will flash 1-1-1 and the fuel system is operating correctly.
  1. If diode light does not flash when button is pressed, or no code is flashed there is a problem with the soft-diagnostic system, proceed as follows:
    1. Check ground connections on the intake manifold, and the ground connection for the Lambda-sond at the right front mudguard.
    2. Check the fuses for the pump relay and the primary pump. On 240 models, fuses are located inside the engine compartment on the left side wheel well housing. On 760/780 models, fuses are located in the center console, just below the radio. On 740/940 models, fuses are located behind the ashtray. Access can be gained by removing the ashtray, and pressing upward on the tab marked electrical fuses press. On 850 models, the fuses are located on the left side of the engine compartment behind the strut mount plate. The fuses on 960 models are located on the far left side of the dashboard. The driver's door must be open to gain access to the fuses.
    3. Remove glove compartment, and check control unit ground connections.
    4. Turn the ignition switch to the OFF position. Remove control unit connector and connector protective sleeve.
    5. Check diagnostic socket by connecting a voltmeter between ground and No. 4 connection on the control unit connector. Reading should be 12 volts. If no voltage is present, check lead between control unit connector and fuse No. 1 in the fuse/relay box.
    6. Turn the ignition to the ON position, and install selector cable into the No. 2 socket on the diagnostic socket. Connect a voltmeter between ground and No. 12 connection on the control unit connector. Reading should be 12 volts. Press the button on diagnostic socket and note reading. Reading on the voltmeter should be 0 volts. If no voltage at the control unit is present, take reading at the diagnostic socket connector. If reading remains at 12 volts when button is pressed, check diagnostic socket.
    7. Connect a voltmeter between ground and the red/black lead on the diagnostic socket connector. Reading should be 12 volts.
    8. Connect a suitable ohmmeter between ground and the brown/black lead in the diagnostic socket connector. Reading should be 0 ohms.
    9. Turn the ignition to the OFF position. Connect ohmmeter between diagnostic socket selector cable and the pin under selector button. The ohmmeter should read infinity. Press the button and note the reading. The reading should be 0 ohms.
    10. Connect a suitable diode/multimeter tester, or equivalent, between the diagnostic socket diode light and the selector cable. Connect red test pin from the tester to pin under diode light and black test pin from tester to selector cable. A reading on the tester indicates correct diode light function. With no reading on tester, replace diagnostic socket.
    11. Check the system relay/primary relay by connecting a voltmeter between ground and the No. 9 connection on the control unit connector, then connect a jumper wire between ground and No. 21 connection on the control unit connector. The relay should activate and the reading should be 12 volts.

  2. Press the diagnostic socket button. Note any additional fault codes.

The diagnostic system memory is full when it contains 3 fault codes. Until those codes are corrected and the memory erased, the system cannot give information on any other problems.
  1. Press the diagnostic socket button for the third time to see if a third fault code is stored in the memory. If the diode light flashes the same code 1-1-1, there are no other codes in the memory.

jturcotte_2373.gif

Fig. Fig. 1: Push button once for mode 1
Push button twice for mode 2


Push button three times for mode 3




jturcotte_2375.gifjturcotte_2374.gif


To clear the codes:

  1. Turn the ignition switch to the ON position.
  2. Read fault codes.
  3. Press diagnostic socket button 1 time and hold for approximately 5 seconds. Release button. After 3 seconds the diode light should light up. While the light is still lit, press the button again and hold for approximately 5 seconds. After releasing the button, the diode light should go off.
  4. To ensure that the memory is erased, press the button 1 time, for 1 second but not more than 3 seconds. The diode light should flash code 1-1-1.
  5. Start and run engine. If engine will not start, correct the problem before proceeding and start over with Step 1.
  6. Check to see if new fault codes have been stored in the memory by pressing the diagnostic socket button 1 time, for 1 second but not more than 3 seconds.
  7. If fault code 1-1-1 flashes, it indicates that there are no additional fault codes stored in its memory.

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My1997sporster batt full charge conections tight, turn key on lights come on push starter button and nothing,pulled batt back out to check lines, batt sat in holder, tryed to start . It started and ran ,...


Have u checked the starter connection? Sounds like ur starter solenoid is malfunctioning, the starter relay and the starter switch.
Clean the battery terminal and the connector thoroughly.
Try to short the positive terminal connection of the solenoid and tell us wut happened.

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I have a 99 mercury villager, getting a 0340 code. it says its for a crankshaft sensor but vehicle doesn't have one. What does this code mean?


Hi, code 340 is for the camshaft sensor. Below is a test you can run to check the sensor. The PCM is above the glovebox. Do not disconnect or remove the PCM. Just remove the glove box and probe the back of the connector to access the pins indicated in the cam sensor test. Please let me know if you have any questions, and thanks for using FixYa.

1999-00 Vehicles

On 1999-00 vehicles, the camshaft position sensor must be checked with the engine running. If a no start condition is encountered, observe the MIL. With the ignition switch on and the engine off, the MIL should be illuminated. If the camshaft position sensor is functioning, the MIL should go out when cranking the engine.
  1. Run the engine until it reaches normal operating temperature. Leave the engine running.
  2. Using a voltmeter set to the DC range, connect the negative lead of a voltmeter lead to the negative battery terminal or chassis ground.
  3. Connect the positive voltmeter lead to the back of the PCM electrical connector in terminal 44.
PCM pinout

jturcotte_1222.gif

  1. Observe the voltmeter reading. The reading should be 0.3-0.5 volts.
  2. Disconnect the positive voltmeter lead from terminal 44, and connect it to terminal 49.
  3. Observe the voltmeter reading. The reading should be approximately 2.5 volts.
  4. Perform steps 3 through 6 with the engine at 2,000 rpm with the transaxle in park. The voltage readings should be the same.
  5. If the observed voltages are not within specifications, the sensor may be faulty.

REMOVAL & INSTALLATION
The camshaft position sensor is part of the distributor assembly, and must be replaced as a unit. Please refer to Engine Electrical, Distributor Ignition System, Distributor, Removal and Installation for the procedure.

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