46.3
TROUBLESHOOTING FLASH CODE 46
[c] If the engine does start and the voltage measurement is greater than 10.0 volts,
refer to section 46.3.2.
Number of Cylinders
Dual Fuse or Circuit
Breaker Size
Single Fuse or Circuit
Breaker Size
6
2 @ 15 amp
1 @ 30 amp
8
2 @ 20 amp
1 @ 40 amp
12
4 @ 15 amp
2 @ 30 amp
16
4 @ 20 amp
2 @ 40 amp
20
4 @ 15 amp2 @ 20 amp
2 @ 30 amp1 @ 40 amp
Table 46-1
Fuse Size Recommendations
Length from
ECM to
Battery or Bus
Bar (ft) *
Minimum Wire
Size (Ga) *
Total
Resistance
of Maximum
Length (m
) *
Length from
ECM to
Battery or Bus
Bar (m) †
Minimum Wire
Size (Ga) †
Total
Resistance
of Maximum
Length (m
) †
0 to 28 ‡
12
24.8
0 to 6 ‡
2.5
22.8
28 to 44 ‡
10
24.57
6 to 10 ‡
4
23.55
44 to 70 ‡
8
24.58
10 to 14 ‡
6
21.98
70 to 110 ‡
6
24.7
14 to 26 ‡
10
23.66
110 to 178 ‡
4
25.0
26 to 40 ‡
16
23.2
0 to 14 §
12
24.8
0 to 3 §
2.5
22.8
14 to 22 §
10
24.57
3 to 5 §
4
23.55
22 to 35 §
8
24.58
5 to 7 §
6
21.98
35 to 55 §
6
24.7
7 to 13 §
10
23.66
55 to 89 §
4
25.0
13 to 20 §
16
23.2
* United States
†International
‡ Dual Fuse
§ Single Fuse
Table 46-2
Maximum Resistance vs Power Harness Length
46.3.2
Voltage Check at ECM
Perform the following steps to check voltage at the ECM.
1. Keep engine running.
2. Select ECM INPUT VOLT on DDR.
3. Observe ECM voltage reading on DDR.
All information subject to change without notice.
46-6
6SE497 9709 Copyright © 1997 DETROIT DIESEL CORPORATION
