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Symptom: P1187-THOTTLE INLET PRESSURE/MAP CORRELATION When Monitored and Set Condition: P1187-THOTTLE INLET PRESSURE/MAP CORRELATION When Monitored: Igntion on. Set Condition: The PCM compares the MAP and TIP sensor with the ignition on. If the sensors are not close in value a failure is recorded. The MAP and TIP should be within the POSSIBLE CAUSES COMPARING MAP AND TIP SENSORS CHECKING FOR OTHER DTCS CHECKING THE HOSES AND TUBING (A23) TIP SIGNAL CIRCUIT OPEN (K167) SENSOR GROUND CIRCUIT OPEN SOLENOID TEST #1 SOLENOID TEST #2 SOLENOID TEST #3 SOLENOID TEST #4 THROTTLE INLET PRESSURE SENSOR CHECKING VACUUM PASSAGE (K7) 5 VOLT SUPPLY CIRCUIT MAP SENSOR INTERNAL OPEN (K1) MAP SIGNAL CIRCUIT OPEN (K1) MAP SIGNAL CIRCUIT SHORTED TO GROUND PCM TEST ACTION APPLICABILITY 1 Turn the ignition on. t, monitor both the MAP and TIP kPa. NOTE: The MAP and TIP should both be within the range of 56 kPa to 112 All Yes → Go To 2 No → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. 261 DRIVEABILITY - NGC |