TM 10-3930-675-24-1
ELECTRONIC CONTROL UNIT (ECU) INPUT VOLTAGE TROUBLESHOOTING - CONTINUED
0013 00
Table 5. Error Code 202 - Supply Voltage to Tophandler ECU (791) Failure Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Error Code 202 - Supply Voltage to Tophandler 1. Remove the cover from the a. If no voltage (24V) is found at
ECU (791) Failure.
tophandler junction box cover
F41 (1), check continuity of
to gain access. Check voltage
wire A51J (WP 0048 00-23).
(24V) circuit breaker F41 (1) b. Replace damaged or faulty
circuit breaker (WP 0077 00).
ignition ON.
c. Repair or replace damaged
wires or connectors (WP 0113
00).
DIAG ATTACHMENT 1(16)
2. Disconnect
ECU
(791) a. If no voltage (24V) is found at
SYSTEM POWER 24.00V
connector 1 and check voltage
ECU (791) connector 1 pins 7
POWER RI CAN 24.00V
POWER LE CAN 24.00V
(24V) at pins 7 and 8 with the
and 8, check continuity of
10 V REF OUT 10.00V
ignition ON (WP 0048 00-23).
wires A51A, A51B, and A51C
Inspect ECU and connector
(WP 0048 00-23).
pins for damage.
b. Repair or replace damaged
wires or connectors (WP 0113
00).
c. Replace ECU (791) (WP 0080
00).
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