TM 5-3805-298-23-1
0053
Table 1. 172 Intake Manifold Air Temperature Sensor Diagnostic Codes - Continued.
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
3. Using MSD, check for active
172-4 Intake Manifold Air
Diagnostic Code 172-4 Intake
diagnostic codes (WP 0008).
Temperature Sensor Signal
Manifold Air Temperature Sensor
Voltage Is Below Normal or
Signal Voltage Is Below Normal
Remains Active - Proceed to Test
the Voltage Is Shorted Low -
Step 3.
Continued
Diagnostic Code 172-4 Intake
Manifold Air Temperature Sensor
Signal Voltage Is Below Normal
Becomes Inactive - Replace air Intake
temperature sensor (WP 0241).
Proceed to Test Step 4.
Test Step 3. Test for Shorted Engine
Control Wiring Harness.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-298-10).
2. Remove right engine access panel
(WP 0348).
3. Disconnect connector E-C4
(WP 0012, Figure 10) from engine
ECM connector J2.
4. Using digital multimeter
Continuity - Replace engine control
(WP 0174), test for continuity
wiring harness (WP 0294).
between connector E-C4
Proceed to Test Step 4.
(WP 0012, Figure 10) terminal 42
No Continuity - Proceed to step 5.
and terminal 37.
5. Using digital multimeter
Continuity - Replace engine control
(WP 0174), test for continuity
wiring harness (WP 0294).
between connector E-C4
Proceed to Test Step 4.
(WP 0012, Figure 10) terminal 42
No Continuity - Replace engine ECM
and ground.
(WP 0265).
Proceed to Test Step 4.
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