Yamaha 2003 TDM900 Supplementary Service Manual - Elec
–12–
YES
NO
2. Battery
S Check the condition of the battery.
Refer to “CHECKING AND CHARGING
THE BATTERY” in chapter 3. (Manual No.:
5PS1-AE1)
S Clean the battery
terminals.
S Recharge or re-
place the battery.
EAS00739
Minimum open-circuit voltage
12.8 V or more at 20
_C
S Is the battery OK?
YES
NO
3. Main switch
S Check the main switch for continuity.
Refer to “CHECKING THE SWITCHES”.
S Is the main switch OK?
Replace the main
switch.
EAS00749
4. Headlight relay
S Disconnect the headlight relay from the wire
harness.
S Connect the pocket tester (Ω 1) and bat-
tery (12 V) to the headlight relay terminal as
shown.
S Check the headlight relay for continuity.
Battery positive terminal
! red/yellow
Battery negative terminal
!
yellow / black
1
2
Tester positive probe
! red/yellow
Tester negative probe
! blue/black
3
4
LIGHTING SYSTEM
ELEC
NOTE:
YES
NO
1. Main, signaling system and headlight
fuses
S Check the main, signaling system and head-
light fuses for continuity.
Refer to “CHECKING THE FUSES” in chap-
ter 3. (Manual No.: 5PS1-AE1)
S Are the main, parking lighting and headlight
fuses OK?
Replace the fuse(s).
EAS00781
TROUBLESHOOTING
Any of the following fail to light: headlight,
high beam indicator light, taillight, auxilia-
ry light or meter light.
Check:
1. main, signaling system and headlight fuses
2. battery
3. main switch
4. headlight relay
5. dimmer switch
6. pass switch
7. wiring connections
(of the entire lighting system)
SBefore troubleshooting, remove the following
part(s):
1. fuel tank
2. front cowling
3. rear cowling
STroubleshoot with the following special
tool(s).
Pocket tester
90890-03132
EAS00738