Triumph 2010 Tiger 800, Service Manual

Page: 492 / 508

Electrical
Rectifier/Regulator
Internally the rectifier/regulator consists of three diodes, one between each input and the positive terminal, and three Field
Effect Transistors <FETs), one between each input and the ground terminal.
As the voltage of the AC signal from the generator rises, the voltage controller switches the FETs to avoid over voltage on
the output.
The diodes and FETs can be checked using a multimeter on DIODE setting. Disconnect the two electrical connectors from
the rectifier/regulator and check the readings as indicated below.
Note:
•
This test does not check for voltage regulation.
Fault Possible cause Action
Battery not charging Fuse 1 1 Check the condition of fuse 1 1 :-
Battery Check the condition of the battery.
Test the battery using the
BatteryMate 1 5 0-9. Refer to the
instructions supplied with the
BatteryMate 150-9.
Ensure the battery is serviceable:-
Rectifier/Regulator Disconnect the black and the grey
connectors from the rectifier/
regulator and proceed to pinpoint
test 1 :-
Alternator Test the alternator stator (see
page
17-22>
Pinpoint Tests
Test Result Action
1 Check diodes forward bias:
0.4V to 0.7V Proceed to test 2
- Positive (+) probe to rectifier black socket pin 1 to: Open circuit or
Replace the unit. Proceed to test 4
Negative (-) probe to rectifier grey socket pin 1 short circuit
Negative (-) probe to rectifier grey socket pin 2
Negative (-) probe to rectifier grey socket pin 3
2 Check FET function forward bias:
0.1 V to 0.3V Proceed to test 3
- Negative (-) probe to rectifier black socket pin 3 to: Open circuit or
Replace the unit. Proceed to test 4
Positive (+) probe to rectifier grey socket pin 1 short circuit
Positive (+) probe to rectifier grey socket pin 2
Positive (+) probe to rectifier grey socket pin 3
3 Check diodes reverse bias:
More than 1.4V Proceed to test 4
- Negative (-) probe to rectifier black socket pin 1 to: or OL on meter
Positive (+) probe to rectifier grey socket pin 1 Less than 1.4V or Replace the unit. Proceed to test 4
Positive (+) probe to rectifier grey socket pin 2
short circuit
Positive (+) probe to rectifier grey socket pin 3
- Positive (+) probe to rectifier black socket pin 3 to:
Negative (-) probe to rectifier grey socket pin 1
Negative (-) probe to rectifier grey socket pin 2
Negative (-) probe to rectifier grey socket pin 3
17.24
Service Manual
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Tiger 800 and Tiger 800XC