TM 5-3805-296-23-2
0089
Table 1. 1631 Brake Air Supply Solenoid Valve Diagnostic Codes Continued.
089
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 2. Verify Malfunction is
1631-03 Brake Air Supply
Resolved.
Solenoid Voltage Above
1. Ensure all harness connectors are
Normal Continued
connected.
2. Turn battery disconnect switch and
ignition switch to ON position
(TM 5-3805-296-10).
3. At MSD, check for active
1631-3 Brake Air Supply Solenoid
Voltage Above Normal Becomes
diagnostic codes (WP 0008).
Inactive Troubleshooting complete.
1631-3 Brake Air Supply Solenoid
Voltage Above Normal Remains
Active Repeat troubleshooting from
the beginning.
NOTE
1631-05 Brake Air Supply
Solenoid Current Below
Always inspect harness connectors that are involved in the circuit. Poor
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
Transmission/Chassis ECM Detects Below Normal Current on Air Governor
Solenoid Circuit K901.
POSSIBLE CAUSE
Main Cab Wiring Harness High Resistance or Open.
Brake Air Supply Solenoid.
Transmission/Chassis ECM.
Test Step 1. Test for Open Brake Air
Supply Solenoid.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Disconnect connector W-C26
(WP 0012, Figure 73) from brake
air supply solenoid connector
(WP 0012, Figure 72).
0089-3
