DTC detecting condition | Trouble area |
---|---|
•
MAP sensor signal is 0.19 V or lower.
(Low pressure – High vacuums – Low voltage) • MAP sensor signal is 4.5 V or higher. (High pressure – Low vacuums – High voltage) |
•
“BLK/BLU” circuit open
• “LT GRN/RED” circuit open or shorted to ground • “GRN” circuit open or shorted to ground • MAP sensor malfunction • ECM malfunction |
Step | Action | YES | NO |
---|---|---|---|
1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
2 |
Check MAP sensor and its circuit
2)
Turn ignition switch ON.
3)
Check intake manifold pressure.
Is it 126 kPa (37.2 in.Hg) or 0 kPa (0 in.Hg)?
|
Go to Step 3.
|
Intermittent trouble. Check for intermittent referring to
Intermittent and Poor Connection Inspection
.
|
3 |
Check wire harness
1)
Disconnect MAP sensor connector with ignition switch OFF.
2)
Check for proper connection of MAP sensor at “GRN” and “BLK/BLU” wire terminals.
3)
If OK, then with ignition switch ON, check voltage at each of “LT GRN/RED” and “GRN” wire terminals and body ground.
Is voltage about 4 – 6 V at each terminal?
|
Go to Step 4.
|
“LT GRN/RED” wire open or shorted to ground circuit or shorted to power circuit (See NOTE),
“GRN” wire open or shorted to ground, poor “E115-26” connection or “E115-22” connection.
If wire and connection are OK, confirm that MAP sensor is normal and then substitute a known-good ECM and recheck.
|
4 |
1)
Check MAP sensor according to
Manifold Absolute Pressure (MAP) Sensor Inspection:M13A
.
Is it in good condition?
|
“LT GRN/RED” wire shorted to “GRN” wire, “BLK/BLU” wire open, poor “E115-10” connection.
If wire and connection are OK, substitute a known-good ECM and recheck.
|
Replace MAP sensor.
|