DTC Confirmation Test
Malfunction is detected when improper voltage is sent to ECM from EVAP-CSPS. Possible causes are:
- EVAP-CSPS circuit open or shorted.
- EVAP-CSPS hose plugged or leaking.
- Defective EVAP-CSPS.
- Defective EVAP-CVCV.
- Defective EVAP-CPVCV.
- Defective EVAP canister.
- Hose between EVAP canister and water separator plugged or leaking.
CAUTION:
DO NOT use ECM ground terminals when measuring voltage.
To set DTC, start engine and warm to normal operating temperature. Measure voltage between ground and ECM terminal No. 92 (fuel tank temperature sensor signal) by backprobing. See Figure and Figure . Ensure voltage is less than 4.2 volts. Turn ignition off and wait at least 10 seconds. Start engine and wait at least 20 seconds. Select MODE 7 with scan tool. If first trip DTC is detected, go to PROCEDURE .