1998 NISSAN PICK-UP Repair Manual

Component Parts Location
DEF030-N
QUICK-GLOW SYSTEMTD
EC-194

Circuit Diagram
HEC570
QUICK-GLOW SYSTEMTD
EC-195

Description
When coolant temperature is lower than 50ÉC (122ÉF), the relay is turned on at the same time that the igni-
tion switch is turned on. From this time, the electric current flows through the glow plugs and heats them up
quickly. After T
1seconds have passed, the control unit turns off the indicator. The relay automatically turns
off after it has been on for T
2seconds or the cranking time, whichever is longer.
The relay remains on for T
3seconds after the ignition switch has returned to ``ON'' from ``START''. These
features improve the combustion performance of the engine after it has started.
When the coolant temperature is higher than 50ÉC (122ÉF), the relay is turned on only during engine crank-
ing.
T1: approx.2-6[sec.] (Varies with coolant temperature.)
T
2: 30 [sec.] [When coolant temperature is below 50ÉC (122ÉF).]
5 [sec.] [When coolant temperature is over 50ÉC (122ÉF).]
T
3: 600 [sec.] [When coolant temperature is below 50ÉC (122ÉF).]
0 [sec.] [When coolant temperature is over 50ÉC (122ÉF).]
SEF905V
QUICK-GLOW SYSTEMTD
EC-196

Wiring Diagram
TD25 ENGINE (LHD)
HEC571
.
EC±GLOW±01
QUICK-GLOW SYSTEMTD
EC-197

TD25 ENGINE (LHD)
HEC572
.
EC±GLOW±02
QUICK-GLOW SYSTEMTD
Wiring Diagram (Cont'd)
EC-198

TD25 ENGINE (LHD)
HEC573
.
EC±GLOW±03
QUICK-GLOW SYSTEMTD
Wiring Diagram (Cont'd)
EC-199

TD25 ENGINE (RHD)
HEC574
.
EC±GLOW±04
QUICK-GLOW SYSTEMTD
Wiring Diagram (Cont'd)
EC-200