TM 5-3805-296-23-1
0039
Table 1. 1589 Turbo Inlet Pressure Sensor Diagnostic Codes Continued.
039
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
1589-04 Turbo Inlet Air
Pressure Sensor Voltage
Always inspect harness connectors that are involved in the circuit. Poor
Below Normal
connections can often be the cause of a problem in an electrical circuit.
Verify that all connections in the circuit are clean and secure and that all
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.
DIAGNOSTIC CODE SET CONDITION
Engine ECM Detects Below Normal Voltage on Turbo Inlet Pressure Sensor
Signal Circuit F714.
POSSIBLE CAUSE
Engine Interface Wiring Harness Shorted.
Turbo Inlet Pressure Sensor.
Engine ECM.
Test Step 1. Test for Shorted Turbo
Inlet Pressure Sensor.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Disconnect connector CL-C11
(WP 0012, Figure 55) from turbo
inlet pressure sensor connector
(WP 0012, Figure 54).
3. Turn battery disconnect switch to
ON position and start engine
(TM 5-3805-296-10).
1589-3 Turbo Inlet Air Pressure Sen-
4. At MSD, check for active
sor Voltage Above Normal Becomes
diagnostic code 1589-4 Turbo Inlet
Active Replace turbo inlet pressure
Air Pressure Sensor Voltage
sensor (WP 0212).
Below Normal (WP 0008).
Proceed to Test Step 3.
1589-4 Turbo Inlet Air Pressure Sen-
sor Voltage Below Normal Remains
Active Proceed to Test Step 2.