DTC P0380 / P0670 / P1648
Precautions: General safety (00)
NOTE:
For identification of each cylinder, refer to Statement on Cleanliness and Care:D16AA.
DTC Detecting Condition and Trouble Area
| DTC detection condition | Trouble area |
|---|---|
|
P0380: Glow Plug / Heater Circuit “A” Any of the following conditions is met.
•Glow plug control module drive circuit is open. (1 D/C detection logic but MIL does not light up)•Glow plug control module drive circuit is shorted to power supply. •Glow plug control module drive circuit is shorted to ground. •Temperature of glow plug control module drive circuit is out of specified range. |
•Glow plug control module and/or its circuit
•ECM |
|
P0670: Glow Plug Control Module Control Circuit / Open Measured voltage of glow plug control module drive circuit does not match command signal. (1 D/C detection logic but MIL does not light up) |
|
|
P1648: Glow Plug Module Internal Measured voltage of glow plug control module ground circuit is different from measured voltage of ECM ground circuit. (1 D/C detection logic but MIL does not light up) |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | C1: | Glow plug No.1 drive circuit | 3. | Glow Plug No.1 |
| A1: | Glow plug control module power supply circuit | C2: | Glow plug No.2 drive circuit | 4. | Glow Plug No.2 |
| A2: | Glow plug control module power supply circuit | C3: | Glow plug No.3 drive circuit | 5. | Glow Plug No.3 |
| A3: | Glow plug control module ground circuit | C4: | Glow plug No.4 drive circuit | 6. | Glow Plug No.4 |
| B1: | Glow plug control module drive circuit | 1. | ECM | 7. | “FL2” fuse |
| B2: | Glow plug control module communication circuit | 2. | Glow plug control module |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
Glow plug control module power supply circuit, ground circuit and drive circuit check
1)Check “A1”, “A2”, “A3” and “B1” circuits according to Step 2 – 5 of Glow Plug Operation Check:D16AA.
Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
Glow plug control module replacement
1)Replace glow plug control module.
2)Clear DTC.
3)Set ignition “OFF”.
4)Check DTCs.
Is DTC P0380, P0670 or P1648 still detected?
|
Replace ECM and recheck DTC.
|
End.
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