TM 5-3805-296-23-1
0025
Table 1. 0172 Intake Manifold Air Temperature Sensor Diagnostic Codes.
0025
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
0172-03 Intake Manifold Air
Temperature Sensor Voltage
Always inspect harness connectors that are involved in the circuit. Poor
Above Normal or Inlet Air
connections can often be the cause of a problem in an electrical circuit.
Temperature Parameter Is
Verify that all connections in the circuit are clean and secure and that all
40
connections are in good condition. If a problem with the connection is
found, correct the problem and verify that this malfunction or diagnostic
code is active before performing this procedure.
Perform open or short-circuit test at each harness connection to identify
the correct harness to replace.
Tag all wiring harnesses to aid in installation.
Perform this test only if condition is active with engine running.
DIAGNOSTIC CODE SET CONDITION
Engine ECM Detects Above Normal Voltage on Intake Air Temp Sensor Signal
Circuit C967.
POSSIBLE CAUSE
Basic Engine Wring Harness High Resistance, Open, or Shorted.
Intake Air Temperature Sensor.
Engine ECM.
Test Step 1. Test Intake Air Temp
Sensor Signal Voltage.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Disconnect connector CM-C5
(WP 0012, Figure 18) from intake
air temperature sensor connector
(WP 0012, Figure 17).
3. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-296-10).
4. Using digital multimeter
Voltage Greater Than 5.5 V Proceed
(WP 0540), test for voltage
to Test Step 2.
between connector CM-C5
Voltage 5.5 V or Less Proceed to
terminal 1 and terminal 2
Test Step 3.
(WP 0012, Figure 18).
Test Step 2. Test for Shorted Basic
Engine Wiring Harness.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Lower left frame access plate
(WP 0376).
