DTC P045A / P045B / P045C / P045D / P1688 / P1689
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detection condition | Trouble area |
|---|---|
|
P045A: Exhaust Gas Recirculation “B” Control Circuit EGR-2 valve drive circuit is open. (3 D/C detecting logic) |
•EGR-2 valve and/or its circuit
•ECM |
|
P045B: Exhaust Gas Recirculation “B” Control Circuit Range / Performance EGR-2 valve drive circuit is overload. (3 D/C detecting logic) |
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P045C: Exhaust Gas Recirculation “B” Control Circuit Low EGR-2 valve (+) drive circuit is shorted to ground. (3 D/C detecting logic) |
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P045D: Exhaust Gas Recirculation “B” Control Circuit High EGR-2 valve (+) drive circuit is shorted to power supply. (3 D/C detecting logic) |
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P1688: Exhaust Gas Recirculation “B” Control Circuit 2 Low EGR-2 valve (–) drive circuit is shorted to ground. (3 D/C detecting logic) |
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P1689: Exhaust Gas Recirculation “B” Control Circuit 2 High EGR-2 valve (–) drive circuit is shorted to power supply. (3 D/C detecting logic) |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | B1: | EGR-2 valve position sensor power supply circuit | 1. | ECM |
| A1: | EGR-2 valve (+) drive circuit | B2: | EGR-2 valve position sensor signal circuit | 2. | EGR-2 valve motor |
| A2: | EGR-2 valve (–) drive circuit | B3: | EGR-2 valve position sensor ground circuit | 3. | EGR-2 valve position sensor |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
EGR-2 valve (+) drive circuit and (–) drive circuit check
1)Check “A1” and “A2” circuits according to Step 2 of EGR-2 Valve Operation Check:D16AA.
Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
EGR-2 valve check
1)Check EGR-2 valve.
Is check result OK?
|
Replace ECM and recheck DTC.
|
Replace EGR-2 valve.
|