Battery not charging

Main fuse

Check the condition of the fuse.

Battery

Check the condition of the battery.

Refer to the instructions supplied with recommended battery charger to make sure the battery is serviceable.

Alternator

Proceed to pinpoint test 1:

Regulator/Rectifier

Test the regulator/rectifier (see Regulator/Rectifier)

1

Check cable and terminal integrity:

- Battery positive (+)

- Battery negative (-)

- Rectifier/regulator to main wiring harness connector pin 1

- Rectifier/regulator to main wiring harness connector pin 2

- Rectifier/regulator to main wiring harness connector pin 3

- Rectifier/regulator to main wiring harness connector pin 4

OK

Proceed to test 2

Faulty

Rectify fault, proceed to test 6

2

Check cable and terminal integrity:

- Rectifier/regulator to alternator harness connector pin 1

- Rectifier/regulator to alternator harness connector pin 2

- Rectifier/regulator to alternator harness connector pin 3

OK

Disconnect the battery leads, negative (black) lead first. Disconnect rectifier/regulator to main wiring harness connector (4 pin). Proceed to test 3

Faulty

Locate and rectify wiring fault, proceed to test 6

3

Check cable continuity:

- Rectifier/regulator main harness connector pin 1 to battery lead negative

- Rectifier/regulator main harness connector pin 2 to battery lead negative

- Rectifier/regulator main harness connector pin 3 to battery lead positive

- Rectifier/regulator main harness connector pin 4 to battery lead positive

OK

Reconnect the battery leads, positive (red) lead first. Reconnect the rectifier/regulator to main wiring harness connector (4 pin). Disconnect the rectifier/regulator to alternator harness connector (3 pin). Proceed to test 4

Open circuit

Locate and rectify wiring fault, proceed to test 6

4

Check resistance through the coils:

- Alternator harness pin 1 to 2

- Alternator harness pin 2 to 3

- Alternator harness pin 3 to 1

0.2 Ohms to 3 KOhms

Proceed to test 5

<0.2 Ohms - Short circuit

>3 KOhms - Open circuit

If the fault is between the connector and the crankcase, repair the harness. proceed to test 6

If the fault is after the crankcase, replace the unit. Proceed to test 6

5

Check for short to earth:

- Alternator harness pin 1 to metal frame

- Alternator harness pin 2 to metal frame

- Alternator harness pin 3 to metal frame

Open circuit

Proceed to test 6

Short circuit

Replace unit. Proceed to test 6

6

Reconnect the harness and run the engine. Check the charging voltage at 2,000 rpm:

13.5 V - 15 V

Action complete - quit test

Test rectifier/regulator (see Regulator/Rectifier).

If rectifier/regulator is serviceable, contact Triumph service

Fault still present