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p C CHECK COIL SIDE CIRCUIT OF A/C 12 volts exist between ECM harness terminal No. p 23 and body ground? Yes E No Disconnect A/C relay. Note CHECK CIRCUIT CON- p 1 AND ECM HARNESS TERMI- p 23 . Continuity should exist. If OK, check harness for CHECK VOLTAGE FOR ECM. 12 volts exist between ECM harness terminal No. p 44 and body ground? Yes E No CHECK ECM. Refer to Disconnect ECM harness connector. Yes Note CHECK CIRCUIT CONTINUITY p 74 AND PRESSURE SENSOR HARNESS TERMINAL NO. p 2 . Continuity should exist. If OK, check harness for short. CHECK PRESSURE SENSOR. OK E NG Replace pressure sensor. p D (Go to next page.) YHA281 ECM connector YHA282 A/C relay ECM connector NHA458 ECM connector YHA273 ECM connector Refrigerant pres- H H H H H H H TROUBLE DIAGNOSES AUTO Diagnostic Procedure 10 (Cont’d) HA-73 |