TM 10-3930-675-24-1
ENGINE PRESSURE SENSOR TROUBLESHOOTING - CONTINUED
0023 00
Table 2. Error Code 1123 - Intake Manifold Pressure
Sensor Circuit Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1123 - Intake Manifold Pressure 7. Install breakout cable. Place If voltage is not as specified,
ignition switch in ON position proceed with the following steps.
Sensor Circuit Failure - Continued.
and check intake manifold
pressure
sensor
signal
voltage.
Check
voltage
between lead B and C of
breakout cable. Voltage
should be 0.42 to 0.58V.
0.42-0.58V
C
A
B
8. Place ignition switch in OFF
position. Disconnect intake
manifold pressure sensor
from engine harness and
disconnect sensor harness
from engine ECU.
a. Measure resistance from If resistance is not as specified,
sensor harness connector pin notify Sustainment Maintenance.
39 to chassis ground.
Resistance should be more
than 100k Ohms.
USE TEST LEAD
KIT P/N 3822758
39
>100K OHMS
0023 00-11
