Lull 944E-42 Service Manual - Manual (Page 639)

9.129 Model 644E-42/944E-42 Rev. 6/04
Electrical System
With ignition switch OFF,
hazard indicator and all
hazard lights remain OFF
with the 4 way hazard
switch in the ON position.
Not
OK
Check for battery voltage at
pin 17 (right signals), wire
[HZ5] (GRN), and pin 18 (left
signals), wire [HZ4] (ORG) on
hazard switch.
Not
OK
Check for battery voltage at
pin 3, wire [HZ6] (RED/WHT)
on hazard switch.
Replace hazard switch.
Not
OK
If OK
Check for battery voltage at
pin 2, wire [HZ2] (PUR) on
hazard switch.
If OK
Not
OK
If OK
Replace cab
roadlight harness.
If OK
Not
OK
Check for battery voltage at
pin 5, wire [HZ3] (PUR) on
hazard switch.
If OK
Replace hazard switch.
Not
OK
Check connection at pin 31,
wire [RLG5] (BLK) on flasher
and wire [RLG6] (BLK)
connection at ground stud.
Replace flasher.
Clean and tighten connection.
Not
OK
Check for battery voltage at
pin D, wire [LT1A] (ORG) and
pin E, wire [RT1A] (GRN) on
roadlight female connector.
If OK
Replace cab
roadlight harness.
If OK
Replace failed bulb.
Check for battery voltage
across pins 3 & 6, wire
[RLG3] (BLK) & [LT1C]
(ORG) (Left), [RLG4] (BLK) &
[RT1C] (GRN) (Right) on
headlight connector or pins
1 & 3, wire [RLG1] (BLK) &
[LT1D] (ORG) (Left),
[RLG2] (BLK) & [RT1D]
(GRN) (Right) on
taillight connector.
Check for proper ground at
wire [EG7] (BLK) at ground
buss bar.
Not
OK
Clean, tighten and recheck.
If OK
Replace vehicle
roadlight harness.
Before troubleshooting any
electrical circuit, ALWAYS begin
by checking the following:
1. Fuses.
2. All connections relating to
circuit are clean and tight.
3. All grounding straps are intact
and securely fastened, refer to
Section 9.1.12, “General
Overview (Vehicle Ground
Strap Locations).”
4. If one or more of the hazard
lights work, the circuit is fine,
the failed bulb(s) need to be
replaced.