21. DTC: P0445, Canister Control Valve Driving Stage Control Circuit Voltage Too High (see Table 1-34) Table 1-34 22. DTC: P0480, A/C Condenser Cooling Fan A Relay Control Circuit Trouble (see Table 1-35) Table 1-35 58 S/N Operation Test Results Actions 1 Connect the diagnostic instrument and adapter, and turn the ignition switch to ON. Next step 2 Disconnect the canister control valve from the harness. Measure the voltage between the pin 1# of the control valve and the power supply negative pole with a multimeter. Is the voltage about 12V? Yes Go to step 4 No Next step 3 Check for open circuit or short to ground at the power supply end of the control valve.
Yes Repair or replace harness No Go to step 2 4 Measure the resistance between pin 1# and pin 2# with a multimeter. Is the resistance between 22Ω and 30Ω under the temperature of 20℃? Yes Next step No Replace control valve 5 Measure the voltage between the pin 1# of the control valve and the power supply negative pole with a multimeter. Is the voltage about 3.7V? Yes Diagnosis help No Next step 6 Check for short to power supply between the pin 2# of the control valve and the pin 46# of the ECU. Yes Repair or replace harness No Diagnosis help S/N Operation Test Results Actions 1 Connect the diagnostic instrument and adapter, and turn the ignition switch to OFF.
Next step 2 Disconnect A/C condenser cooling fan relay, and turn the ignition switch to ON. Check the voltage between the pin 30#, 85# of the relay (power supply end) and the power supply negative pole. Is the voltage about 12V? Yes Go to step 4 No Next step 3 Check for open circuit or short to ground at the power supply end of the A/C condenser cooling fan relay. Yes Repair or replace harness No Go to step 2 4 Check the voltage between the pin 86# of the relay (control end) and the power supply negative pole. Is the voltage between 3.7V?
Yes Replace relay No Next step 5 Check for open circuit or short to power supply or ground between the pin 86# of relay control end and the pin 50# of the ECU. Yes Repair or replace harness No Diagnosis help