TM 10-3930-675-20-1
0015 00-1
ELECTRONIC CONTROL UNIT (ECU) SUPPLY VOLTAGE TROUBLESHOOTING
0015 00
THIS WORK PACKAGE COVERS
Error Code 451 - Voltage Supply Too High for Steering
ECU (792)
Error Code 452 - Voltage Supply Too Low for Steering
ECU (792)
Error Code 811 - Voltage Supply Too Low for Transmis-
sion ECU (793)
Error Code 812 - Voltage Supply Too High for Trans-
mission ECU (793)
Error Code 813 - Voltage Failure at Transmission Gear-
shift Valve Supply
Error Code 814 - Voltage Failure at Transmission Gear-
shift Valve Supply
INITIAL SETUP
References
TM 10-3930-675-10
Current Supply (A34738.0200) (WP 0199 00-31)
References - Continued
ECS Steering (A34651.0200) (WP 0199 00-16)
ECU Transmission (A34650.0200) (WP 0199 00-12)
NOTE
Refer to WP 0004 00 for additional troubleshooting guidance, information, and illustrations that locate criti-
cal components.
Table 1. Error Code 451 - Voltage Supply Too High for Steering ECU (792) Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 451 - Voltage Supply Too High for
Steering ECU (792)
Check output voltage from
alternator.
If output voltage is greater than
33V, replace alternator (WP
0069 00).
