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DTC P0069-00: Manifold Absolute Pressure/Atmospheric Pressure Correlation Problem: Notes

DTC DETECTION DESCRIPTION

DTC P0069:00	Manifold absolute pressure/atmospheric pressure correlation problem
DETECTION CONDITION	The PCM monitors the difference between the intake manifold vacuum and the atmospheric pressure. If the difference is below -12 kPa {-0.12 kgf/cm² , -1.7 psi} or above 12 kPa {0.12 kgf/cm² , 1.7 psi} when the following conditions are met, the PCM determines that there is a MAP sensor performance problem. MONITORING CONDITIONS 12-15 s from when ignition is switched off. Diagnostic support note This is a continuous monitor (CCM). The check engine light illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the PCM. PENDING CODE is available if the PCM detects the above malfunction condition during first drive cycle. FREEZE FRAME DATA/Snapshot data is available. DTC is stored in the PCM memory.
FAIL-SAFE FUNCTION	Not applicable
POSSIBLE CAUSE	MAP sensor malfunction BARO sensor (built-into PCM) malfunction PCM malfunction
SYSTEM WIRING DIAGRAM	Not applicable

CAUTION:

Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.

PARTS DESCRIPTION

Item	Definition	Unit	Condition/Specification
BARO	Actually measured barometric pressure input from barometric pressure sensor built into PCM	KPa {MPA}, mBar {BAR}, psi, in H20	Displays BARO
MAP	Manifold absolute pressure input from MAP sensor	KPa {MPA}, mBar {BAR}, psi, in H20	Displays MAP
MAP_V	MAP sensor voltage	V	Ignition switched ON (engine off) (MAP:100 kPa {1.02 kgf/cm² , 14.5 psi}): Approx. 4.04 V Idle (after warm up) (MAP: 35 kPa {0.36 kgf/cm² , 5.1 psi}): Approx. 1.40 V Racing (engine speed is 2, 000 rpm) (MAP: 26 kPa {0.27 kgf/cm² , 3.8 psi}): Approx. 1.01 V