wsm STW37 - Main Switch (ROPS Model)

ELECTRICAL SYSTEM
STW34, STW37, STW40, WSM
9-S12
(2) Main Switch (ROPS Model)
Main Switch
1. Remove the instrument panel.
2. Disconnect the 4P connector (1) and remove the main switch.
3. Perform the following checks.
9Y1211109ELS0007US0
Connector Voltage
1. Measure the voltage with a voltmeter across the connector B
terminal and chassis.
2. If the voltage differs from the battery voltage (11 to 14 V), the
wiring harness is faulty.
9Y1211109ELS0008US0
Main Switch Continuity
1) Main Switch Key at OFF Position
1. Set the main switch OFF position.
2. Measure the resistance with an ohmmeter across the B terminal
and the AC terminal, B terminal and ST terminal, B terminal and
G terminal.
3. If infinity is not indicated, the contacts of the main switch are
faulty.
9Y1211109ELS0009US0
2) Main Switch Key at ON Position
1. Set the main switch ON position.
2. Measure the resistance with an ohmmeter across the B terminal
and the AC terminal.
3. If 0 ohm is not indicated, the B - AC contact of the main switch
are faulty.
9Y1211109ELS0010US0
3) Main Switch Key at PREHEAT Position
1. Set and hold the main switch key at the PREHEAT position.
2. Measure the resistance with an ohmmeter across the B terminal
and the G terminal, and measure the resistance across the B
terminal and the AC terminal.
3. If 0 ohm is not indicated, these contacts of the main switch are
faulty.
9Y1211109ELS0011US0
(1) 4P Connector
Voltage
Connector B terminal –
Chassis
Approx. battery voltage
Resistance
B terminal – AC terminal
InfinityB terminal – ST terminal
B terminal – G terminal
Resistance B terminal – AC terminal 0 Ω
Resistance
B terminal – G terminal
0 Ω
B terminal – AC terminal
KiSC issued 11, 2014 A