Turn/Hazard Light Turn Switch - Testing (A.40.A.13.83 - G.40.A.20); 435, 445, 445Ct; Turn/Hazard Light Flasher Unit - Testing (A.40.A.13.86 - G.40.A.20) - Case 435 Repair Manual

Turn/hazard light Turn switch - Testing (A.40.A.13.83 - G.40.A.20)

435, 445, 445CT

NOTE: For wiring diagram refer to Wiring harness - Electrical schematic frame 20 (A.30.A.88 - C.20.E.20)
N° Test Point
1 Turn the key switch to the ON
position.
Terminal for wire 759A (P) to ground.
2 Place the hazard switch on the ON
position.
Terminal for wire 758B (P) to ground.
3 If the readings are correct and the
indicator lamp on the hazard switch
does not illuminate, proceed to the
following test.
Terminal for wire 178BM (B) to
ground.

Turn/hazard light Flasher unit - Testing (A.40.A.13.86 - G.40.A.20)

435, 445, 445CT
NOTE: For wiring diagram refer to Wiring harness - Electrical schematic frame 20 (A.30.A.88 - C.20.E.20)
N° Test Point
1 Terminal for wire 178FA to ground.
2 Turn the key switch to the ON
position.
Terminal for wire 751FA (R) to
ground.
3 Place the hazard switch in the ON
position.
Terminal for wire 758FA (P) to
ground.
4 Terminal for wire 757FA (P) to
ground.
5 Terminal for wire 756FA (P) to
ground.
6 Terminal for wire 759FO (P) to
ground.
7 Place the turn signal switch in the
left turn position.
Terminal for wire 756 to ground.
8 Place the turn signal switch in the
right turn position.
Terminal for wire 757 to ground.
DISTRIBUTION SYSTEMS - LIGHTING SYSTEM
Expected Result
12 volts
12 volts
Continuity
Expected Result
Continuity
12 volts
Intermittent 12 volts
Intermittent 12 volts
Intermittent 12 volts
Intermittent 12 volts
Intermittent 12 volts
Intermittent 12 volts
1 04/05/2005
A.40.A / 4
Other Result (Possible Cause)
Check the circuit between the
flasher switch and the 10 amp fuse
in the options fuse block. Also check
the 10 amp fuse in the options fuse
block
Bad hazard switch.
Bad ground circuit for hazard switch
indicator lamp.
If the readings are correct and the
indicator lamp on the hazard switch
doe not illuminate, replace the
hazard switch.
Other Result (Possible Cause)
Bad ground circuit.
Check the circuit between the
flasher and the 10 amp fuse in the
options fuse block. Also check the
10 amp fuse in the options fuse
block.
Check the circuit between the
flasher and the flasher switch. Also
check the flasher switch.
Bad flasher.
Check diode in diode pack.
Bad flasher.
Check diode in diode pack.
Bad flasher.
Check the circuit between the
flasher and the turn signal switch.
Also check the turn signal switch.
Bad flasher.
Check the circuit between the
flasher and the turn signal switch.
Also check the turn signal switch.
Bad flasher.