CONTROL SYSTEM
F–48–2
Without Using the SST
Caution
• The PCM terminal voltages vary with change in measuring conditions and vehicle conditions.
Always carry out a total inspection of the input systems, output systems, and PCM to determine
the cause of trouble. Otherwise, a wrong diagnosis will be made.
1. Measure the voltage at each terminal.
• If any incorrect voltage is detected, inspect the related system(s), wiring harnesses and connector(s)
referring to the Action column in the terminal voltage table.
Terminal voltage table (Reference)
Terminal Signal Connected to Test condition
Voltage
(V)
Action
1A IGT1
Ignition coil (No. 1,
4 cylinders)
• Inspect using the wave profile.
(See F–48–10 Inspection Using An
Oscilloscope (Reference).)
• Inspect ignition coil
(See G–9 IGNITION
COIL INSPECTION)
• Inspect related
harness
1B IGT2
Ignition coil (No. 2,
3 cylinders)
• Inspect using the wave profile.
(See F–48–10 Inspection Using An
Oscilloscope (Reference).)
• Inspect ignition coil
(See G–9 IGNITION
COIL INSPECTION)
• Inspect related
harness
1C GND GND Under any condition Below 1.0
• Inspect related
harness
1D GND GND Under any condition Below 1.0
• Inspect related
harness
1E —— — ——
1F —— — ——
1G
Atmospheric
pressure
BARO sensor
Ignition switch ON (Engine OFF
at sea level)
Approx.
4.0
• Inspect BARO sensor
(See F–60
BAROMETRIC
PRESSURE (BARO)
SENSOR
INSPECTION)
• Inspect related
harness
Ignition switch OFF Below 1.0
1H —— — ——
1I —— — ——
1J
Manifold absolute
pressure
MAP sensor
Ignition switch ON (Engine OFF
at sea level)
Approx.
4.1
• Inspect MAP sensor
(See F–52
MANIFOLD
ABSOLUTE
PRESSURE (MAP)
SENSOR
INSPECTION)
• Inspect related
harness
Idle (at sea level)
Approx.
1.5
1K Brake Brake switch
Brake pedal depressed B+ • Inspect brake switch
• Inspect related
harness
Brake pedal released Below 1.0
1L —— — ——
1B
1A
1E
1D
1C
1H
1G1J
1F1I
1M
1L
1N 1K1T 1Q
1P1S
1O1R
1W
1V
1Z
1Y
1X
1AC
1AB
1AA
1AD
1U
2B
2A
2E
2D
2C
2H
2G2J
2F2I
2M
2L
2N 2K2T 2Q
2P2S
2O2R
2W
2V
2Z
2Y
2X
2AC
2AB
2AA
2AD
2U
3B
3A
3E
3D
3C
3H
3G3J
3F3I
3M
3L
3N 3K3T 3Q
3P3S
3O3R
3W
3V
3Z
3Y
3X
3AA
3U
4B
4A
4E
4D
4C
4H
4G4J
4F4I
4M
4L
4N 4K4T 4Q
4P4S
4O4R
4W
4V
4Z
4Y
4X
4AC
4AB
4AA
4AD
4U
A6A3940W002
To Next Page
Loading...
