S15/T15 2WD P/U L4-137 2.2L DSL VIN S (1984)
Glow Plug: Testing and Inspection
Warm Engine
With a normally operating Q.O.S. (Quick On System) with coolant temperature above 140°F and ignition turned to ``On'' position, glow plug indicator
turns on for about .3 second, then off. When ignition switch is turned to ``Start'' position, glow plug indicator and No. 2 relay (constant heat) turn on and
remain on until ignition switch is returned to ``On'' position.
IGNITION IN ``ON'' POSITION
Glow Plug Light Remains On For 3.5 Seconds & Causes Relay No. 1 To Turn On
1.
Thermo-switch circuit is not properly connected or open.
2.
Thermostat switch is inoperative.
IGNITION IN ``START'' POSITION
Relay No. 2 & Glow Plug Indicator Inoperative
Starter switch ``R'' terminal not properly connected or open.
Relay No. 2 Inoperative
1.
Relay No. 2 terminals not connected.
2.
Circuit between ``R'' terminal and No. 2 relay not properly connected or open.
3.
No. 2 relay coil is open.
Glow Indicator Light Inoperative
Controller damaged.
