wsm ME8200 Workshop Manual page 474

ME8200, ME9000, WSM
(B) Brake Switch
Hazard Unit
1. Remove the instrument panel.
2. Measure the voltage with a voltmeter across the GB terminal (6)
and chassis.
3. If the voltage differ from the battery voltage, the wiring harness is
faulty.
Voltage GB terminal - chassis
(Reference)
1 –
2 0.85GB
3 0.5Y
4 0.85RY
5 0.85RW
6 0.85GB
7 0.85RB
8 –
9 0.85LR
10 –
11 –
12 0.85WL
13 0.85L
A : Hazard Unit
Brake Switch
1) Wiring Harness
1. Disconnect the leads from the brake switch (1).
2. Connect the wiring harness lead terminals to each other and turn
the main switch on.
3. If the stop lights do not light, the fuse, wiring harness or bulb is
faulty.
2) Brake Switch Continuity
1. Remove the brake switch (1).
2. Check the continuity with an ohmmeter across the switch
terminals.
3. If it does not conduct or any value is indicated when the switch is
pulled, the switch is faulty.
4. If infinity is not indicated when the switch is released, the switch
is faulty.
Resistance
Reference
(Across switch
value
terminals)
(1) Brake Switch
9-S33
ELECTRICAL SYSTEM
Approx. battery voltage
Vacancy
Ground
Trailer Indicator
Turn Signal RH (Output)
Battery Voltage (AC)
Battery Voltage
Turn Signal LH (Output)
Vacancy
Turn Signal RH (Input)
Vacancy
Vacancy
Turn Signal LH (Input)
Hazard Switch
When switch is pulled Infinity
0 Ω
When switch is released
KiSC issued 03, 2007 A
W1040574
W1050616