P0237

Test 1 - 2:

Test 3 - 7:

Test 8 - 10:

SYMPTOM
P0237-MAP SENSOR VOLTAGE TOO LOW

WHEN MONITORED
With the ignition on and battery voltage greater than 10.4 volts.

SET CONDITION
The circuit voltage to the ECM falls below a calibrated threshold for a certain period of time.

POSSIBLE CAUSES
- Other DTC'S
- (K68) signal circuit shorted to (Y502) sensor return circuit
- (Y501) 5-volt supply circuit shorted to (Y502) sensor return circuit
- MAP sensor
- (K68) signal circuit open
- (Y501) 5-volt supply circuit open
- MAP sensor (K68) signal circuit short to ground
- ECM