Check Intake Manifold Pressure Signal

WARNING: This page is about a different car, the 2001 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.

9M1: CHECK INPUT SIGNAL FOR TCM.
1. Start the engine.
2. Warm-up the engine until engine coolant temperature is above 80°C (176°F).
  NOTE: If ambient temperature is below 0°C (32°F), drive the vehicle until the ATF reaches its operating temperature.
3. Engine idling after warm-up.
4. Move select lever to "N".
5. Read data of intake manifold pressure signal using Subaru Select Monitor.
  - Display shows intake manifold pressure signal value sent from ECM.
CHECK: Does voltage change in response to the depress-release motion of the accelerator pedal?
1. YES: Go to step 9M2.
2. NO: Check intake manifold pressure signal circuit, DTC 45: INTAKE MANIFOLD PRESSURE SIGNAL .
9M2: CHECK ECM.
CHECK: Has trouble been eliminated after ECM replacement?
1. YES: Replace ECM, see ENGINE CONTROL MODULE .
2. NO: Go to step 9M3.
9M3: CHECK TCM.
NOTE: Install former ECM.

CHECK: Has trouble been eliminated after TCM replacement?
1. YES: Replace TCM, see TRANSMISSION CONTROL MODULE (TCM) .
2. NO: Go to step torque converter turbine speed sensor, see CHECK TORQUE CONVERTER TURBINE SPEED SENSOR .