Checking microswitch in tailgate
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Checking microswitch in tailgate
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Alarm cannot be activated/deactivated with key in the tailgate
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1.
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Connect ISAT, select "READ VALUES" and then select "TAILGATE LOCK". Read off the ISAT display.
Open tailgate -
"OPEN"
Closed tailgate -
"CLOSED"
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2.
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If incorrect, connect BOB and disconnect ISAT.
Measure resistance between theft alarm connection pin 15 and a good grounding point while repeating step 1.
Open tailgate -
< 1 Ohm
Closed tailgate -
OL
If the resistance is correct, proceed to step 5.
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3.
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Check the wiring harness for open circuit/short-circuit by measuring resistance between theft alarm connection pin 15 and connection 1.
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4.
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Also check the resistance between connection 2 on the microswitch and a good grounding point.
Resistance in step 3 and 4 must be < 1 Ohm.
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5.
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Also check the voltage between connection 2 and a good grounding point. The voltage must be 0 V.
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6.
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If the resistance and voltage is correct in steps 4 and 5, the malfunction is likely in the microswitch, change switch and check the function.
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7.
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If the malfunction remains despite the above checks, continue fault diagnosis on page
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