4WD dash light doesnt come on when engaged.4WD doesnt engage. Standard shift. The front driveshaft turns.

Tiny
TTOMMIS
  • MEMBER
  • 2001 CHEVROLET TRACKER
  • 12,600 MILES
4wd diesnt engage
Wednesday, October 10th, 2012 AT 8:09 PM

12 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Check the 4WD switch at transfer case. Does 4WD Low light indicates?
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Wednesday, October 10th, 2012 AT 8:28 PM
Tiny
TTOMMIS
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No. The 4wd low light doesnt come on. In high or low.
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Wednesday, October 10th, 2012 AT 10:18 PM
Tiny
KHLOW2008
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Check the fuses in diagram first. If all fuses ar good, you could have a fault with the PCM wiring or a bad ground circuit ( behind right side of dash) for the 4WD switches
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Wednesday, October 10th, 2012 AT 10:24 PM
Tiny
TTOMMIS
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Im not sure of rhe fuse location.
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Wednesday, October 10th, 2012 AT 10:35 PM
Tiny
KHLOW2008
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Sorry, I was supposed to attach the diagram.

You would need a testlight or DVOM handy if you want to continue with diagnostics if the fuses are good.
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Wednesday, October 10th, 2012 AT 10:37 PM
Tiny
TTOMMIS
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Thank You for your quick response and expertese. Its suppertime here now. Iwill check the fuses tomorrow and will get back with you. Thanks again, Tom.
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Wednesday, October 10th, 2012 AT 11:12 PM
Tiny
TTOMMIS
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Hi.I checked all the fuses their ok.I have a test light and will wait for your instructions.
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Thursday, October 11th, 2012 AT 3:33 PM
Tiny
KHLOW2008
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Which engine do you have?
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Thursday, October 11th, 2012 AT 5:10 PM
Tiny
TTOMMIS
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2.0
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Thursday, October 11th, 2012 AT 9:20 PM
Tiny
KHLOW2008
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Here are the schematics. Turn ignition switch on and at the PCM, use the test light to ground terminal # 26, C3 (connector # 3 ) and note if the 4WD Low indicator light comes on.

Likewise repeat above with terminal # 18 of C4, for 4WD light.

Note the wire colors to be sure which terminal is the correct one.
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Thursday, October 11th, 2012 AT 10:05 PM
Tiny
TTOMMIS
  • MEMBER
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Hi.I am having trouble locating the powertrain control module. Exactly where us it?
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Friday, October 12th, 2012 AT 1:36 AM
Tiny
KHLOW2008
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Under right side of dash.
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Friday, October 12th, 2012 AT 1:20 PM

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