(1) Is there continuity on wire 223A/B
between connector MC12, terminal 8
and connector MC51, terminal C?
(a) If there is no continuity,
repair wire 223A/B (see
schematic Fig 2-20) or notify DS
(b) If there is continuity, wire 223A/B
(2) Repeat Step (1) for terminals and
connectors listed in Table 2-28.
(3) Connect connector MC12.
(4) Connect connector MC51.
Remove all jewelry such as rings, dog tags,
bracelets, etc. If jewelry or tools contact
positive electrical circuits, a direct short may
result. Damage to equipment, injury or death
to personnel may occur.
Circuit breakers CB5, CB6, CB12, CB20, CB22,
CB23 and relays R3, R13 - R19, R26, R28, R32,
R33 are always electrically hot and can cause
severe injury to personnel. Care must be
exercised when working under the electrical
circuit board cover.
The following test checks continuity between the
terminals on connectors MC12 and the other
terminals on the ECB/ATEC wire harness.
Table 2-28 lists the terminal numbers on
connector MC12, the wire connected to them
and terminal at the other end of the harness.
Terminals on connector MC9 match those on
Table 2-28. ECB/ATEC Wire Harness
Connectors MC12, MC50 and MC51.