TM 5-3805-298-23-1
0052
Table 1. 168 Electrical System Voltage Diagnostic Codes.
0052
CID FMI CODE
TEST OR INSPECTION
CORRECTIVE ACTION
NOTE
168-0 Electrical System
Voltage High
Always inspect wiring harness connectors that are involved in the circuit.
Poor 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 wiring harness connection to
identify the correct wiring 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 battery voltage is above 32 VDC.
POSSIBLE CAUSE
Charging system.
Test Step 1. Test Charging System.
1. Connect MSD. Select C6.6 924,
Diagnostic Code 168-0 Electrical
start engine (TM 5-3805-298-10),
System Voltage High Is Not Active -
Troubleshooting is complete.
and check for active diagnostic
codes (WP 0008).
Diagnostic Code 168-0 Electrical
System Voltage High Remains
Active - Proceed to step 2.
2. Perform Charging System Test
Alternator Voltage Too High
(WP 0165).
Replace alternator (WP 0238).
Proceed to Test Step 2.
Test Step 2. Verify Malfunction Is
Resolved.
Connect MSD. Select C6.6 924, start
Diagnostic Code 168-0 Electrical
engine (TM 5-3805-298-10), and check System Voltage High Becomes
for active diagnostic codes (WP 0008). Inactive Troubleshooting complete.
Diagnostic Code 168-0 Electrical
System Voltage High Remains
Active Repeat troubleshooting from
the beginning.
