4-34 FI SYSTEM DIAGNOSIS Step 2 2 1) Crank the engine a few seconds with the starter motor, and measure the CMP sensor peak voltage at the coupler. 2) Repeat the above test procedure a few times and measure the highest peak voltage. V CMP sensor peak voltage: 0.5 V and more (+ B/Y – - Brown) 1 Peak volt adaptor 09900-25008: Multi-circuit tester set Tester knob indication: Voltage () . Is the voltage OK? 2 • G/Y or Brown wire open or shorted to ground ECM coupler (Harness side) • Loose or poor contacts on the CKP sensor cou- (Black) (Gray) pler or ECM coupler (terminal C or T) • If wire and connection are OK, intermittent trou- YES ble or faulty ECM. • Recheck each terminal and wire harness for E open circuit and poor connection. • Replace the ECM with a known good one, and L inspect it again. P • Inspect that metal particles or foreign material stuck on the CMP sensor and rotor tip. M NO • If there are no metal particles and foreign mate- rial, then replace the CMP sensor with a new one. SA 3) After repairing the trouble, clear the DTC using SDS tool. (4-27)