P1187

Test 1:

Test 2 - 5:

Test 6 - 9:

Test 10 - 13:

Test 14 - 17:

SYMPTOM
P1187-THROTTLE INLET PRESSURE/MAP CORRELATION

WHEN MONITORED
Ignition 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 the range of 56 kPa and 112 kPa with the ignition on. Two trip failure.

POSSIBLE CAUSES
- Comparing map and tip sensors
- Checking for other DTC's
- 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