2000 jeep grand cherokee 4.7 camshaft position sensor location

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Test orange wire for 5 volts, if volts less than 4.5 repair open in circuit.

3. Turn ignition off. Ensure CMP sensor connector is still disconnected. Using an ohmmeter, check resistance between CMP sensor connector, 5 volt supply circuit (Orange wire) and signal circuit (Tan/Yellow wire).
If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair 5 volt supply circuit for short to signal circuit. Perform TEST VER 5A.
4. Ensure ignition is off. Ensure CMP sensor connector is still disconnected. Turn ignition on, with engine off. Using a voltmeter, check voltage on CMP sensor connector, signal circuit (Tan/Yellow wire). If voltage is
less than 4.5 volts, go to next step. If voltage is 4.5 5.5 volts, go to step 9). If voltage is more than 5.5 volts, repair signal circuit for short to voltage. Perform TEST VER 5A.
5. Turn ignition off. Ensure CMP sensor connector is still disconnected. Disconnect PCM connectors. PCM is located in engine compartment. See PCM LOCATION table under SYSTEM DIAGNOSTICS. Clean
and/or repair connectors as necessary. Using an ohmmeter, check resistance of CMP sensor signal circuit (Tan/Yellow wire) between CMP sensor connector and PCM. If resistance is less than 5 ohms, go to next
step. If resistance is 5 ohms or more, repair open signal circuit. Perform TEST VER 5A.
6. Turn ignition off. Ensure CMP sensor and PCM connectors are still disconnected. Using ohmmeter, check resistance between ground and CMP sensor connector, signal circuit (Tan/Yellow wire). If resistance is 5
ohms or more, go to next step. If resistance is less than 5 ohms, repair signal circuit for short to ground. Perform TEST VER 5A.
7. Ensure ignition is off. Ensure CMP sensor and PCM connectors are still disconnected. Using ohmmeter, check resistance between CMP sensor connector, signal circuit (Tan/Yellow wire) and sensor ground
circuit (Black/Light Blue wire). If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair signal circuit for short to sensor ground circuit. Perform TEST VER 5A.
8. At this time, PCM is assumed to be defective. Replace PCM. Perform TEST VER 5A.
9. Ensure ignition is off. Ensure CMP sensor connector is still disconnected. Using an ohmmeter, check resistance between ground and CMP sensor connector, sensor ground circuit (Black/Light Blue wire). If
resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, go to step 12).
10. Ensure ignition is off. Ensure CMP sensor connector is still disconnected. Remove CMP sensor. See Fig. 28 or Fig. 29 . Inspect tone wheel/flexplate for physical damage. Ensure tone wheel/flexplate rotates when
engine is cranked. If tone wheel/flexplate is okay, go to next step. If tone wheel/flexplate is damaged, repair or replace as necessary.
11. At this time, CMP sensor is assumed to be defective. Replace CMP sensor. Perform TEST VER 5A.
12. Turn ignition off. Ensure CMP sensor connector is still disconnected. Disconnect PCM connectors. PCM is located in engine compartment. See PCM LOCATION table under SYSTEM DIAGNOSTICS. Clean
and/or repair connectors as necessary. Using an ohmmeter, check resistance of CMP sensor ground circuit (Black/Light Blue wire) between CMP sensor connector and PCM. If resistance is less than 5 ohms, go
to next step. If resistance is 5 ohms or more, repair open sensor ground circuit. Perform TEST VER 5A.
13. At this time, PCM is assumed to be defective. Replace PCM. Perform TEST VER 5A.
Test ver 5a is using a labscope so if you can't get it rnning by this time tow to a repair shop it still may not be your pcm. Also check for blown fusesin power dist box and check fuse 19 and 6 as well as automatic shutdown relay as that may be the problem as well.

Wednesday, October 14th, 2020 AT 2:49 PM (Merged)

Joined Sep 2, 2012

848 Posts

Discussion Starter · #1 · Jul 18, 2016

Some tips on replacing Cam Shaft position sensor on a 4.7L WJ
In my program to replace parts that fail on the WJ over 100K miles, today I replace the cam shaft position sensor (NOT THE CRANK SHAFT POSITION SENSOR). I let the local garage do the crankshaft position sensor – it was $ very well spent. Google replacing the crank shaft position sensor...the horror stories should convince you to take it to a garage.

So the cam shaft position sensor is best attacked from underneath the jeep. It does not need to be jacked up. The sensor is located on the passenger side (e.g. ‘right’ side) of the engine. It is held in by a 10MM screw. The FSM says to release the connector then unscrew the bolt holding the sensor. I found it easier to unscrew the bolt first pop out the sensor, then undo the connector.

Thing are very tight in the area where the sensor is located. I had to use a flexible joint + 10MM 6-point socket to remove the screw. Caution – I strongly suggest a 6-point socket so you don’t round off the bolt head. I had to hold the socket on the bolt with one hand, and turn the ratchet wrench with the other. Bugger was a bit tight!

Once the bolt was removed, the sensor easily rotated out of the hole. I lubed the o-ring on the new sensor with some oil and popped it in. Put the bolt in by hand and then tightened with a socket, then plugged in the connector. Strongly advised to use a real mopar sensor. Reason being is that they work better and last longer.
Total job took about 45 mins. Have fun wrenching!

Joined Dec 29, 2011

333 Posts

Saw an amazing tip in a youtube clip. Remove the battery and the battery tray and access from the top. Took me under 20 minutes start to finish.

Joined Sep 2, 2012

848 Posts

Discussion Starter · #3 · Jul 19, 2016

Cool! even better. Thanks for sharing.
J

Joined Jun 17, 2016

792 Posts

Incredible! When I did mine it took me almost 5 hours! Can only get one hand up there. For a couple hours, I couldn't even find it. It's way the heck up there and I didn't know what it looked like. All you can see really is the head of the bolt that holds it in. Could not figure out which size socket to use for a long time. Then it took forever to get the clip off. I didn't have enough extensions, so i had to make a run to to O'Rilies to buy another foot of extensions. Getting the clip back on, after I installed the new one was also hard. I cut my hand up on the stock radiator hose clamp.

Joined Sep 2, 2012

848 Posts

Discussion Starter · #5 · Jul 19, 2016

snip
Then it took forever to get the clip off. I didn't have enough extensions, so i had to make a run to to O'Rilies to buy another foot of extensions.
snip
.

Clip - that is why I removed the sensor first, so I could use two hands on the connector - greasy, slippery, and wasn't exactly sure how the clip mechanism worked.
Yea, if you work it from the bottom you will need a total of about 12-14" extensions and a swivel joint helps too.
Removing the battery is a better alternative, IMHO, after doing it from underneath and *then* seeing this video..

What are the symptoms of a faulty camshaft sensor?

A glowing check engine light, stalling, poor acceleration and bad fuel mileage are all possible signs your camshaft position sensor may be failing. Gone are the days of carburetors and distributors, replaced by a variety of sensors that help a car's computer get the maximum performance out of the engine.

Where is camshaft sensor is Bank 1 sensor A?

The sensor is at the front right top of the engine beneath the large plastic engine cover. It is held on by a single T-30 torx bit machine screw. Please note that OBD-II diagnostic trouble codes, such as the code relied on to "advise" you, can NEVER be used to "directly" condemn parts.

jeep grand cherokee camshaft position sensor location