TP-6805 8/15 123Section 6 Component Testing and Adjustment
6.13 Start (Crank) and Run Relays
The start (crank) relay is located under the controller.
See Figure 6-38. Generator sets built before August 1,
2014, have one start relay in this location. Generator
sets built on or after August 1, 2014, have two relays
(start and run). Identify the relays by the connected
leads shown in Figure 6-39. The start relay is connected
to lead 71 from the controller (P1--14). The run relay, if
equipped, is connected to lead 70 from the controller
(P1--13).
The start and run relays are energized during the engine
start sequence as described in Section 5.2.
The relay contains an internal diode across the relay
coil. See Figure 6-40. Continuity checks across the coil
terminals will show continuity (low resistance) in one
direction and an open circuit in the other.
1. Start relay is located under controller; see detail.
2. Start and run relays; check connections to identify
tp6806
2
Relay location detail
1
ADV-8424
Note: Units built before
8/1/14 have one relay
in this location.
Figure 6-38 Relay Location, 14/20RESA shown
Relay Terminal
Start Relay
Lead
Run Relay
Lead
30 (1) 14P P1
85 (2) N7 N5
86 (3) 71 70
87A (4) NC N/C
87 (5) 14S 70C
Figure 6-39 Relay Connections
259391
Figure 6-40 Start (Crank) or Run Relay
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