ELECTRICAL SYSTEM 17-41
Preheating System
Preheating Timer Inspection
•
Check that the main switch is turned OFF, and connect
the hand tester [A] to the preheating timer [B] as follows.
Special Tool - Hand Tester: 57001-1394
Hand Tester Range: DC 25 V
Hand Tester (+) Lead → Black Lead Terminal
Hand Tester (–) Lead → Ground
•
When the m ain switch is turned ON, the reading should
show less than 1.8 V during 5 seconds.
If the preheating timer does not work, replace the timer.
Glow Plug Relay Inspection
•
Remove:
Mounting Bolt [A] and Nut
Glow Plug Relay [B]
Glow Plug Relay Lead Connectors [C]
•
Connect the hand tester [A] and 12 V battery [B] to the
glow plug relay [C] as shown in the figure.
Special Tool - Hand Tester: 57001-1394
If the relay does not work as specified, the relay is defec-
tive. Replace the relay.
Testing Relay
Hand Tester Range: × 1 Ω
Criteria: When battery is connected → 0 Ω
When battery is disconnected →∞Ω
Relay Coil Terminals [85] and [86]
Relay Switch Terminals [30] and [87]
Glow Plug Relay Installation
•
Connect the leads to the glow plug relay terminals as fol-
lows.
Black Lead (Tag No . 85)
→
to Terminal No. 85 [A]
BrownLead(TagNo.86)
→
to Terminal No. 86 [B]
Black/White Lead (Tag
No. 87)
→
to Terminal No. 87 [C]
Black/White Lead (Tag
No. 30)
→
to Terminal No. 30 [D]
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