wsm L503 Workshop Manual page 538

L3130 · L3430 · L3830 · L4630 · L5030, WSM
(E) Glow Control System
Glow Plug Lead Terminal Voltage
1. Disconnect the wiring lead (1) from the glow plug (2) after turning
the main switch off.
2. Turn the main switch key to the "ON" position, and measure the
voltage between the lead terminal and the chassis.
3. Turn the main switch key to the "START" position, and measure
the voltage between the lead terminal and the chassis.
4. If the voltage at either position differs from the battery voltage, the
wiring harness or main switch is faulty.
Main switch key at
Voltage
"ON"
(Lead terminal –
Main switch key at
Chassis)
"START"
(1) Wiring Lead (Positive)
Glow Plug Continuity
1. Disconnect the lead from the glow plugs.
2. Measure the resistance between the glow plug terminal and the
chassis.
3. If 0 Ω is indicated, the screw at the tip of the glow plug and the
housing are short-circuited.
4. If the factory specification is not indicated, the glow plug is faulty.
Glow plug resistance Factory spec.
Glow Relay
1) Connector Voltage
1. Turn the main switch off.
2. Disconnect the 4P connector from glow relay.
3. Measure the voltage across the terminal 3 (Positive) and chassis
(Negative).
4. If the voltage differs from the battery voltage, the wiring harness
is faulty.
5. Turn the main switch on.
6. Measure the voltage across the terminal 1 (Positive) and chassis
(Negative).
7. If the voltage differs from the battery voltage, the wiring harness
is faulty.
2) Glow Relay Test
1. Remove the glow relay.
2. Apply battery voltage between the terminal 3 and the terminal 4,
and check the continuity of the terminal 1 and the terminal 2.
3. If the continuity is not established between terminal 1 and the
terminal 2, replace the glow relay.
A : Connector of Wire Harness Side
9-S39
ELECTRICAL SYSTEM
Approx. battery voltage
Approx. battery voltage
(2) Glow Plug
W10149130
Approx. 0.9 Ω
W10151150
B : Connector of Glow Relay
W1014050
KiSC issued 02, 2007 A