Dtc P0401 / P0402: Exhaust Gas Recirculation Flow Insufficient Detected / Excessive Detected - Suzuki SX4 Service Manual

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Step
7
CMP sensor check
1) Check CMP sensor and signal rotor tooth referring to
"Camshaft Position (CMP) Sensor Inspection in Section
1C".
Is check result satisfactory?

DTC P0401 / P0402: Exhaust Gas Recirculation Flow Insufficient Detected / Excessive Detected

System and Wiring Diagram
1. EGR valve
2. Intake manifold
3. ECM
Action
4. Sensed information
5. Fresh air
6. Exhaust gas
Engine General Information and Diagnosis:
Yes
Substitute a known-
good ECM and recheck.
7. "IG COIL" fuse
8. Main fuse box
9. Ignition switch
1A-119
No
Replace CMP sensor
and/or intake camshaft.
S7RW0A1104045
I6RW0D110034-01
10. Main relay
11. "FI" fuse
12. "IGN" fuse

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