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• Continuity should exist. • Also check harness for short to power and short to ground. Is the check result normal? Yes >> Go to the next step. No >> Repair or replace circuit for an open or short to power or short to ground in harness or connectors. 4. CHECK ATMOSPHERE PRESSURE SENSOR SIGNAL CIRCUIT • Check harness continuity between ECM terminal 69 and atmosphere pressure sensor terminal 2. • Continuity should exist. • Also check harness for short to power and short to ground. Is the check result normal? Yes >> Go to the next step. No >> Repair or replace harness or connectors. 5. CHECK ATMOSPHERE PRESSURE SENSOR • Connect ECM connector. • Connect atmosphere pressure sensor connector. • Check sensor signal output. TERMINAL NO. ITEM CONDITION DATA (DC VOLTAGE) 65 Regulated sensor supply Ignition switch: ON - 4.8 - 5.2 V 69 Atmosphere pressure sensor • Sea level altitude: 3.7 - 4.3 V (101 kPa) • Sea level altitude: 95 kPa • Sea level altitude: 3.2 - 3.8 V (88 kPa) • Sea level altitude: 81 kPa 76 Sensor (GND) Ignition switch: ON 0 V Is the check result normal? Yes >> Go to the next step. No >> Replace atmosphere pressure sensor. DIAGNOSIS & TESTING LTSMD030070 03
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