2–684
DTC: P0671 and P0672
P0671: Glow plug (Circuit low) (#1cyl), Glow plug (Circuit high) (#1cyl)
INFORMATION
ECU
1.
Technical description
• Glow plug is controlled by GCU.
• The indicator in the meter lights up when a failure (malfunction caused by short-circuit or disconnection) occurs in
the glow system.
<Description of malfunction>
• Circuit failure between the GCU and glow plug #1 is detected.
2.
DTC set condition
(1)
DTC detection condition
• Starter key is "ON".
• The engine ECU instructs glow discharge.
The conditions described below remain for 1 second or more.
- The battery voltage is in the range of 10 V to 16 V.
- Starter is not actuated.
(2)
Judgement criteria
• The condition that the glow plug operating current is less than the range of 0.5 to 0.9 A remains for 0.3 sec-
onds or more, or the condition that the glow plug operating current is greater than the range of 21 to 36 A
remains for 0.3 seconds or more.
3.
Reset condition
• Immediately after normal operation is restored.
4.
Indication, warning or system control regulation when the DTC is set.
• MIL: ON
• SVS light: OFF
ENGINE (J05E)/TROUBLESHOOTING
ENG3
GCU
BATT
+B
ST
SI
Control signal
+B
DI
DI
Diagnosis signal
+B
Glow
+B
GL1
GLW1
Glow Plug 1
GL2
GLW2
Glow Plug 2
GL3
GLW3
Glow Plug 3
GL4
GLW4
Glow Plug 4
EN01H02127030602016112
#1cyl
#2cyl
#3cyl
#4cyl
SHTS021270300627