TM 10-3930-675-24-1
ENGINE PRESSURE SENSOR TROUBLESHOOTING - CONTINUED
0023 00
Table 1. Error Code 1122 - Intake Manifold Pressure Sensor
Circuit Failure Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 1122 - Intake Manifold Pressure 4. Disconnect all pressure and
Sensor Circuit Failure - Continued.
temperature sensors from
engine harness. Disconnect
coolant level sensor jumper
wires no. 5 and 6 from 31-pin
OEM connector, located on
left side of engine to rear of
ECU. Install breakout cable.
Place ignition switch in ON
position.
5. Check
intake
manifold If voltage is not as specified,
pressure
sensor
supply perform the following steps.
voltage.
Check
voltage
between lead A and B of
breakout cable. Voltage
should be 4.75 to 5.25V.
4.75-5.25V
C
A
B
a. Disconnect all pressure and
temperature sensors from
sensor harness. Disconnect
coolant level sensor jumper
wires no. 5 and 6 from 31-
pin OEM connector. Place
ignition switch in ON
position. Install breakout
cable but do not connect to
sensor.
0023 00-2