Engine Speed Check
Precautions: General safety (00)
NOTE:
Even if vehicle is under idling condition, forced regeneration without speed request is activated according to degree of DPF® clogging.
In this state, EGT during idling is increased.
For details of forced regeneration, refer to “Forced regeneration without Speed Request” under DPF® Regeneration Description:D16AA.
Circuit Diagram
| [A]: | ECM connector (View: [a]) | B2: | CMP sensor signal circuit | 3. | CKP sensor rotor |
| A1: | CKP sensor signal circuit (+) | B3: | CMP sensor ground circuit | 4. | CMP sensor |
| A2: | CKP sensor signal circuit (–) | 1. | ECM | 5. | CMP sensor rotor |
| B1: | CMP sensor power supply circuit | 2. | CKP sensor |
Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Parameter check
1)When ignition is “OFF”, connect SUZUKI scan tool to DLC.
2)Set ignition “ON”.
3)Check that “Engine Speed” exceeds 60 rpm without running engine.
Is check result OK?
|
Go to Step 2.
|
Go to Step 3.
|
| 2 |
Idle speed check
1)Start engine and warm it up to normal operating temperature.
2)With engine at idle speed, all electrical loads turned off and accelerator pedal released, check that “Engine Speed” displayed on SUZUKI scan tool is specified value below.
•A/C OFF: Approx. 800 rpm
•A/C ON: Approx. 850 rpm Is check result OK?
|
End.
|
Go to Step 3.
|
| 3 |
CKP sensor signal circuit check
1)When ignition is “OFF”, disconnect “D01” connector from ECM and CKP sensor connector.
2)Check for proper terminal connection to “D01” connector and CKP sensor connector.
3)If connections are OK, check the following points.
•Resistance of “A1” and “A2” circuits: less than 1 Ω
•Resistance between each of “A1” and “A2” circuits and ground: infinity •Resistance between “A1” circuit terminal and other terminal at CKP sensor connector: infinity •Voltage of “A1” and “A2” circuits: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 4.
|
Repair or replace defective wire harness.
|
| 4 |
CKP sensor check
1)Check CKP sensor.
Is check result OK?
|
Go to Step 5.
|
Replace CKP sensor.
|
| 5 |
CKP sensor rotor replacement
1)Replace CKP sensor rotor.
2)Recheck parameter referring to “Step 1 – 2”.
Is check result OK?
|
End.
|
Replace ECM and recheck parameter.
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