Toro 4100-D service manual Glow Controller Operation, Glow Controller Checks

Glow Controller

The glow controller is located under the console cover (Fig. 39).

NOTE: Refer to electrical schematic and circuit draw- ings in Chapter 9 -- Foldout Drawings when trouble- shooting the glow controller.

Glow Controller Operation

1.When the ignition switch is placed in the ON position, the controller energizes the glow plugs and lights up the glow lamp for approximately 10 seconds.

2.When the ignition switch is held in the START posi- tion, the glow plugs will energize and the glow lamp will not light.

3.When the ignition switch is released from START to ON, the glow plugs will deenergize and the glow lamp will remain off.

Glow Controller Checks

1.Make sure there is power from the battery.

2.Disconnect electrical connector to the engine run so- lenoid to prevent the engine from starting.

3.Place ignition switch in the ON position. Verify the fol- lowing while in the ON position:

A.Glow indicator lamp is illuminated.

B.Glow relay is energized.

C.Glow plugs are energized.

D.Glow indicator lamp goes out and glow plugs de-- energize after approximately 10 seconds.

4.Place ignition switch in the START position. Verify the following while in the START position:

A.Glow indicator lamp is not illuminated.

B.Glow relay is energized.

C.Glow plugs are energized.

D.Power exists at terminal 1 of the glow controller.

NOTE: If there is no power at terminal 1 of the glow con- troller, verify continuity of the circuitry from the ignition switch to the controller and perform step 4 again (see electrical schematic in Chapter 9 -- Foldout Drawings).

1

2

	Figure 39
1. Control panel	2. Controller location

						3		6
						2		5
						1		4
2		CONTROLLER					1	Electrical System
		CONNECTIONS
	VIOLET	START	1	4	TEMP (not used)
	ORANGE	LAMP	2	5	GLOW	BROWN
	YELLOW	+12V	3	6	GROUND	BLACK

Figure 40

1.Glow controller end view 2. Controller side view

5.If any of the conditions in step 3 are not met or power to terminal 1 exists and any of the other conditions in step 4 are not met:

A.Verify continuity of the circuitry from the battery to the glow relay and glow plugs (see electrical sche- matic in Chapter 9 -- Foldout Drawings).

B.Verify continuity of the circuitry from the battery to ignition switch, glow controller, glow lamp, glow relay and ground (see electrical schematic in Chapter 9 -- Foldout Drawings).

C.Replace parts as necessary.

6.Connect electrical connector to the run solenoid.

Groundsmaster 4100--D Page 5 -- 27 Electrical System