4 WHEEL DRIVE SWITCH TEST
(See Figure 10G-9)
1. Disconnect switch connectors.
2. Set multimeter to 200 Ω (ohms) scale.
3. With switch in OFF position, test as follows:
a. Check for continuity across all combinations of
terminals (with switch in the OFF position).
•
There should be no reading on the multimeter.
4. Place switch in ON (fixed) position and test as
follows:
a. Check for continuity by connecting one multi-
meter test lead to terminal B and the other to
terminal A.
•
There should be 0–0.5 Ω (ohms) on the mul-
timeter.
b. Check for continuity across remaining terminal
(with switch in the ON (fixed) position).
•
There should be no reading on the multimeter.
5. Place switch in ON (momentary) position and test
as follows:
a. Check for continuity by connecting one multi-
meter test lead to terminal B and the other to
terminal C.
•
There should be 0–0.5 Ω (ohms) on the mul-
timeter.
b. Check for continuity across remaining terminal
(with switch in the ON (momentary) position).
•
There should be no reading on the multimeter.
Replace a switch that does not meet all the above
test results or has resistance of 0.5 Ω (ohms) or more.
ELECTRICAL SYSTEM
SECTION 10G. SWITCHES
10G-9
10G
Figure 10G-9. 4 Wheel Drive Switch Test
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