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Old 10-27-2017, 06:38 PM #1
GMZ GMZ is offline
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CEL, VSC TRAC, VSC OFF + P0333 = Mice ate my knock sensor wires! - FIXED

Very little info on this issue. All was fine last night. When I started my 4R this morning I got the lit up dash. Thought it might be a gas cap so I retightened and went to work. On the way I had sluggish performance and it would not shift to 5th. Got off work and got the code read and came up P0330 knock sensor 2 high value. ECM went max retard on timing and wouldn't go into 5th as a safe measure.

Doing a little research the sensors rarely go bad, but rodents eating the wires is the main culprit. Off to HD I go to get the Milwaukee inspection camera I always wanted and sure enough the wires are cut. I usually garage my 4R but came home late and left it outside, temps dropped lower than usual and I guess they couldn't resist. Im lucky that they didnt chew the wires right off the connector, it should be easy to solder in some new wire. There is no sub harness for the knock sensors and I assume the dealer would want to replace the whole engine harness at $2478 so Ill be tackling this repair myself this weekend.

Pics to follow. Anyone know what specific type of wire it is? Shielded double coil is about the most info I could find.

ETA: Looks like I might have enough wire to just re-solder.
Attached Images
CEL, VSC TRAC, VSC OFF + P0333 = Mice ate my knock sensor wires! - FIXED-fullsizerender-5-jpg 
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2007 Titanium Silver V8 SE 4x4-Wrecked
2008 Galactic Grey V8 SE 4x4-Current

Last edited by GMZ; 10-28-2017 at 07:45 PM. Reason: Add better photo
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Old 10-28-2017, 07:28 PM #2
GMZ GMZ is offline
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Fixed in about 5 hours, no big deal. Should have changed out the AIP while I was in there but I should have it down to a couple hours next time.

Took a pic before I started to make sure I had everything as it was.
Attached Images
CEL, VSC TRAC, VSC OFF + P0333 = Mice ate my knock sensor wires! - FIXED-img_1323-jpg 
__________________
350Z--->T4R--->370Z--->T4R--->TDI--->T4R
2006 Titanium Silver V6 SE 4x4-Sold
2007 Titanium Silver V8 SE 4x4-Wrecked
2008 Galactic Grey V8 SE 4x4-Current
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Old 10-28-2017, 07:29 PM #3
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Pull the fuse to open the fuel circuit, open the gas cap, then let it run until it dies.
Attached Images
CEL, VSC TRAC, VSC OFF + P0333 = Mice ate my knock sensor wires! - FIXED-img_1331-jpg 
__________________
350Z--->T4R--->370Z--->T4R--->TDI--->T4R
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2007 Titanium Silver V8 SE 4x4-Wrecked
2008 Galactic Grey V8 SE 4x4-Current
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Old 10-28-2017, 07:31 PM #4
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The FSM says to drain the coolant, but I just took the TB off instead. This made things a bit of a challenge later on. Ready to remove intake manifold.
Attached Images
CEL, VSC TRAC, VSC OFF + P0333 = Mice ate my knock sensor wires! - FIXED-fullsizerender-3-jpg 
__________________
350Z--->T4R--->370Z--->T4R--->TDI--->T4R
2006 Titanium Silver V6 SE 4x4-Sold
2007 Titanium Silver V8 SE 4x4-Wrecked
2008 Galactic Grey V8 SE 4x4-Current
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Old 10-28-2017, 07:32 PM #5
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Intake removed to reveal AIP, starter, and water bypass pipe.
Attached Images
CEL, VSC TRAC, VSC OFF + P0333 = Mice ate my knock sensor wires! - FIXED-fullsizerender-4-jpg 
__________________
350Z--->T4R--->370Z--->T4R--->TDI--->T4R
2006 Titanium Silver V6 SE 4x4-Sold
2007 Titanium Silver V8 SE 4x4-Wrecked
2008 Galactic Grey V8 SE 4x4-Current
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Old 10-28-2017, 07:36 PM #6
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Since I didnt drain the coolant, I couldn't remove the water bypass pipe like the FSM said to. So I unbolted the AIP from the bracket and wiggled it out, then removed the bracket. The pipe is blocking the FWD LH nut from overhead access so have to come from the side. Might be able to thread a 1/4" extension through the gap.
Attached Images
CEL, VSC TRAC, VSC OFF + P0333 = Mice ate my knock sensor wires! - FIXED-fullsizerender-1-jpg 
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350Z--->T4R--->370Z--->T4R--->TDI--->T4R
2006 Titanium Silver V6 SE 4x4-Sold
2007 Titanium Silver V8 SE 4x4-Wrecked
2008 Galactic Grey V8 SE 4x4-Current
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Old 10-28-2017, 07:44 PM #7
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I had just enough wire still attached to just solder the ends together. Applied heat shrink, then electrical tape, then plastic hose covering back on.

Started her up, all conditions normal. It took me about 3 hours to break everything down, an hour to repair/clean up, then an hour to reassemble.

Took it slow and read the FSM, had no issues. A magnetic tool retriever and small flashlight were useful. On a couple bolts in the back I had to swap around my sockets and extensions from shallow to deep and 3-6-9" to make things a bit easier.
Attached Images
CEL, VSC TRAC, VSC OFF + P0333 = Mice ate my knock sensor wires! - FIXED-fullsizerender-2-jpg 
__________________
350Z--->T4R--->370Z--->T4R--->TDI--->T4R
2006 Titanium Silver V6 SE 4x4-Sold
2007 Titanium Silver V8 SE 4x4-Wrecked
2008 Galactic Grey V8 SE 4x4-Current
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Old 12-05-2020, 04:24 PM #8
RosettaRock1 RosettaRock1 is offline
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Great write up, can you tell me which FSM section you used? I've searched the engine control and engine but have been unable to locate the section that shows the procedure to get the knock sensor.

How did you use the camera to view the knock connector? Entry point?
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Old 01-31-2022, 08:23 PM #9
Hog_runner Hog_runner is offline
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I just did a similar repair myself this weekend on my 05 V8 SE. I too opted to remove the TB rather than drain coolant - huge time saver thanks to OP! For anyone else in the future, I followed the Starter replacement section in the 2003 FSM.

Had a shop replace the starter a few weeks ago, then the dash lit up like a Christmas tree. Cheap diagnostic tool threw a P0328 code for Knock Sensor 1 Circuit High Input (Bank 1). According to FSM that is actually a code specific to the 1-GR V6. The 2UZ will either throw a P0325 or P0330. Anyway, had a hunch and was correct. The wires were torn loose from the 2-pin connector that attaches to the knock sensor. Pretty sure the shop did it when replacing my starter but I can't prove it.

I ran to oreilly's and picked up this pigtail: https://www.oreillyauto.com/detail/c...or/odi0/400114 listed as a "2 Terminal Fuel Injection Connector" OReilly's part no 40-0114. The wire with the new connector was a thicker gage than the lead from factory harness to factory KS, so I snipped down the length of the new pigtail before soldering onto the factory harness to hopefully avoid throwing the computer off due to higher resistance from thicker wire.
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Old 10-10-2023, 05:33 AM #10
2008UrbanRunnerATL 2008UrbanRunnerATL is offline
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Quote:
Originally Posted by GMZ View Post
Very little info on this issue. All was fine last night. When I started my 4R this morning I got the lit up dash. Thought it might be a gas cap so I retightened and went to work. On the way I had sluggish performance and it would not shift to 5th. Got off work and got the code read and came up P0330 knock sensor 2 high value. ECM went max retard on timing and wouldn't go into 5th as a safe measure.

Doing a little research the sensors rarely go bad, but rodents eating the wires is the main culprit. Off to HD I go to get the Milwaukee inspection camera I always wanted and sure enough the wires are cut. I usually garage my 4R but came home late and left it outside, temps dropped lower than usual and I guess they couldn't resist. Im lucky that they didnt chew the wires right off the connector, it should be easy to solder in some new wire. There is no sub harness for the knock sensors and I assume the dealer would want to replace the whole engine harness at $2478 so Ill be tackling this repair myself this weekend.

Pics to follow. Anyone know what specific type of wire it is? Shielded double coil is about the most info I could find.

ETA: Looks like I might have enough wire to just re-solder.
Hi @GMZ. This post is incredibly helpful. May I ask what was your point of entry when you used the endoscope to find the damage?
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4.7l v8 , cel codes , knock sensor wiring , p0330 , vsc trac & vsc off lights

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