TM 10-3930-675-20-1
0022 00-4
ENGINE PRESSURE SENSOR TROUBLESHOOTING - CONTINUED
0022 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
Sensor Circuit Failure - Continued
6. Disconnect all sensors from
sensor harness except intake
manifold pressure sensor.
Reconnect sensor harness
connector to ECU.
7. Disconnect coolant level
sensor jumper wires. Install
breakout cable. Place ignition
switch in ON position.
8. Check
intake
manifold
pressure
sensor
signal
voltage.
Check
voltage
between leads C and B of
breakout
cable.
Voltage
should be 0.70-1.40V
If voltage is not as specified,
proceed to following steps.
9. Place ignition switch in OFF
position, disconnect sensor
harness from engine ECU,
and disconnect all sensors and
coolant level jumper wires no.
5 and 6. Disconnect intake
manifold pressure sensor.
a. Measure resistance from
sensor harness connector
pin 40 to all other pins in
connector.
Resistance
should be greater than 100k
ohms.
If engine harness requires
replacement, notify SRA.
A
B
C
0.70-1.40V
