TM 5-3805-296-23-1
0033
Table 1. 0274 Atmospheric Pressure Sensor Diagnostic Codes Continued.
033
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 3. Test Atmospheric
0274-03 Atmospheric
Pressure Sensor Signal Circuit
Pressure Sensor Voltage
Voltage.
Above Normal Continued
Voltage Greater Than 12.5 V
Using digital multimeter (WP 0540),
Proceed to Test Step 4.
test for voltage between connector
Voltage 12.5 V or Less Proceed to
CM-C4 terminal 3 and terminal 2
Test Step 5.
(WP 0012, Figure 16).
Test Step 4. Test for Shorted Basic
Engine Wiring Harness.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Disconnect connector CL-C1
(WP 0012, Figure 45) from engine
ECM.
3. Disconnect connector CM-C1
(WP 0012, Figure 30) from engine
ECM.
4. Using digital multimeter
Continuity Replace basic engine
(WP 0540), test for continuity
wiring harness (WP 0251).
between connector CM-C1
Proceed to Test Step 7.
terminal 57 (WP 0012, Figure 30)
No Continuity Proceed to step 5.
and all other terminals
in connector CM-C1
(WP 0012, Figure 30).
5. Using digital multimeter
Continuity Replace basic engine
(WP 0540), test for continuity
wiring harness (WP 0251). Replace
between connector CM-C1
engine interface wiring harness
terminal 57 (WP 0012, Figure 30)
(WP 0211).
and all terminals in connector CL-
Proceed to Test Step 7.
C1 (WP 0012, Figure 45).
No Continuity Replace engine ECM
(WP 0252).
Proceed to Test Step 7.
Test Step 5.Test Atmospheric
Pressure Sensor Signal Circuit
Function.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Connect jumper wire between
terminal 3 and terminal 2
of connector CM-C4
(WP 0012, Figure 16).
3. Turn battery disconnect switch to
ON position and start engine
(TM 5-3805-296-10).
0033-4
