ENGINE (J05E)/TROUBLESHOOTING
2–686
P0672: Glow plug (Circuit low) (#2cyl), Glow plug (Circuit high) (#2cyl)
INFORMATION
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 #2 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 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
5.
Symptoms on the vehicle when the DTC is set
<Symptoms on the vehicle due to backup control (fail safe function)>
•
–
<Symptoms on the vehicle due to malfunction>
•
Vehicle is difficult to start.
GLW1
#1cyl
GL1
+B
+B
+B
+B
Glow Plug 1
GLW2
#2cyl
GL2
Glow Plug 2
GLW3
#3cyl
GL3
Glow Plug 3
GLW4
#4cyl
GL4
BATT
GCU
ECU
SI
DI
ST
DI
Glow Plug 4
Glow
Control signal
Diagnosis signal
ENG3
SHTS021270300628