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Diagnostic Procedure 1 SYMPTOM: Blower motor does not rotate. I Perform PRELIMINARY CHECK 2 before referring to the Check if blower motor rotates properly at 2 3 4 Eq B 5 Eq C (Go to next page.) 1 CHECK POWER SUPPLY FOR BLOWER I Disconnect blower motor harness con- I Turn ignition switch to ACC or ON posi- Do approx. 12 volts exist between blower q 1 and body ground? OK E NG Check 15A fuses at fuse I Put fan switch to ON position. Check circuit continuity between blower q 2 and body ground. OK E NG Reconnect blower motor CHECK BLOWER MOTOR. NG Replace blower motor. CHECK BLOWER MOTOR CIRCUIT I Put fan switch to OFF position. Do approx. 12 volts exist between resistor q 1 and body ground? OK E NG Disconnect blower motor Note I Turn ignition switch OFF. Check circuit continuity q 2 and resistor harness terminal q 1 . q A (Go to next page.) Note: INCIDENT Flow chart No. 1 Fan fails to rotate. 1 2 Fan does not rotate at 2 3 Fan does not rotate at 3 4 Fan does not rotate at 4 5 Fan does not rotate at 5 YHA408 YHA409 YHA410 YHA411 H H H H H H TROUBLE DIAGNOSES HA-52 |