TM 5-3805-296-23-1
0055
Table 1. 0168 Powertrain Power Supply Diagnostic Code Continued.
055
CID FMI
TEST OR INSPECTION
CORRECTIVE ACTION
Ground Point or Ring Terminal Dirty
0168-01 Electrical System
3. Inspect ground point of main
or Corroded Clean as necessary.
Voltage Low Continued
cab wiring harness
(WP 0012, Figure 316) for dirt,
Proceed to Test Step 8.
corrosion, and damage.
Ring Terminal Defective Replace
main cab wiring harness (WP 0505).
Proceed to Test Step 8.
No Problem Found Proceed to Test
Step 6.
Test Step 6. Verify if Code is Still
Active.
1. Ensure all harness connectors are
connected.
2. Turn battery disconnect switch to
ON position and start engine
(TM 5-3805-296-10).
168-1 Electrical System Voltage Low
3. At MSD, check for active
Becomes Inactive Troubleshooting
diagnostic code 168-1 Electrical
System Voltage Low (WP 0008).
complete. Proceed to step 4.
168-1 Electrical System Voltage Low
Remains Active Proceed to Test
Step 7.
4. If removed, install step
(Figure 2, Item 3), six washers
(Figure 2, Item 2), and bolts
(Figure 2, Item 1) on cab
(Figure 2, Item 4).
Test Step 7. Test Main Cab Wiring
Harness for High Resistance or
Open.
1. Turn ignition switch and battery
disconnect switch to OFF position
(TM 5-3805-296-10).
2. Disconnect connector W-C13
(WP 0012, Figure 89) from
transmission/chassis ECM.
3. Using digital multimeter
Resistance 5.0 Ohms or Less
(WP 0540), measure resistance
Proceed to step 4.
between connector W-C13
Resistance Greater Than 5.0 Ohms
terminal 2 (WP 0012, Figure 89)
Replace main cab wiring harness
and ground.
(WP 0505).
Proceed to Test Step 8.
0055-5
