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15yearsaturnguy
15yearsaturnguy, Saturn master tech
Category: Saturn
Satisfied Customers: 1918
Experience:  25 years automotive experience, 15 years with Saturn
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Saturn Vue: 2003 saturn vue 2.2l cvt transmission

Customer Question

2003 saturn vue 2.2l cvt transmission.... car came in to the shop cause of a transmission problem..it won't drive above twenty miles per hr... we rebuiled the transmission completely, pump, belt, new valve body and speed sensors and new clutches...Also replaced computer.. had one code for p1882. P0713, P0960, P0964 and P1888. car still does not shift to second gear

Submitted: 2 years ago.
Category: Saturn
Expert:  15yearsaturnguy replied 2 years ago.

15yearsaturnguy :

Hello and thank you for your post. I am a master certified GM tech. If I can help you solve this today then I will, lets begin

when you installed the new belt, was it a complete case cover assembly from GM or was it just the belt or was it an aftermarket rebuilt case cover assembly?

Customer :

maftermarket rebuilt case cover assy

15yearsaturnguy :

OK.

The code p1882 can be set by tearing the seal on the input shaft when you slide the cover into the transmission OR if the ratio control motor is not dropped into the case cover properly when the valve body is installed

15yearsaturnguy :

should look like this

Full Size Image

Customer :

should i replace the valve body assy

15yearsaturnguy :

the other codes are all pointing towards an open or short to the solenoids in the valve body

are you certain that it is plugged in properly at the valve body connector?

15yearsaturnguy :

and also by the way, there is no 2nd gear

15yearsaturnguy :

this is a constantly variable ratio trans

will revv like a slip but the speed of the car will increase steadily

15yearsaturnguy :

then when you hit your speed and let off the throttle, engine speed will come back down

15yearsaturnguy :

just fyi, because you said it will not go into 2nd gear

Customer :

that is true, i bought the vavle body used..it measured ok but not sure if it is a good valve body

15yearsaturnguy :

ok but so many bad connections make me think it might not be plugged in all the way

15yearsaturnguy :

I doubt all the solenoids are bad

15yearsaturnguy :

one maybe but 3 or 4?

Customer :

i should recheck the connection from the conductor body to the 20 pin connector

15yearsaturnguy :

yes. make sure it is properly plugged in and that no pins are damaged in the valve body or the connector.

Customer :

ok...thank you

15yearsaturnguy :

the valve body connector (on the vb itself) is solid and has no loose wires so if the body itself is not damaged then you either have some pinched or broken wires leading to the vb from the tcm or the vb is damaged internally

(bad lead frame)

15yearsaturnguy :

so check that and if you don't find anything I can give you some resistance checks to see what the issue is

15yearsaturnguy :

or some voltage checks

Customer :

i will do that now...thank you..i you can give me some resistance and voltage checks that would be great

15yearsaturnguy :

I have to compile that info...will take a minute or 3

15yearsaturnguy :

Full Size Image

15yearsaturnguy :
1. Turn OFF the ignition.
2. Disconnect the AT inline 20-way connector. Additional DTCs may set.
3. Turn ON the ignition, with the engine OFF.
4. Connect a test lamp between high control circuit (CKT 5501) of the TCC enable solenoid valve and a good ground.


Does the test lamp illuminate?

15yearsaturnguy :

it should

15yearsaturnguy :

if it does...Connect a test lamp between battery positive and the low control circuit (CKT 5502) of the TCC enable solenoid valve.

Does the test lamp illuminate?
it should not

15yearsaturnguy :
1. Turn OFF the ignition.
2. Install the AT inline 20-way connector.
3. Disconnect the TCM C2 64-way Connector.
4. Using a digital multimeter (DMM) and the J-35616 Connector Test Adapter Kit, measure the resistance between the low control circuit (CKT 5502) and the high control circuit (CKT 5501) of the TCC enable solenoid valve.


Is the resistance measured less than the specified value of 25Ω?

15yearsaturnguy :

if it is the lead frame or the tcc enable solenoid is damaged

15yearsaturnguy :

start with that, see how you make out

Customer :

ok i will try that

Customer :

can you tell me what pins are (ckt 5502) and (ckt5501) on the 64 C2 connector

15yearsaturnguy :

Full Size Image

Customer :

the light did turn on

15yearsaturnguy :

if it does...Connect a test lamp between battery positive and the low control circuit (CKT 5502) of the TCC enable solenoid valve.

Does the test lamp illuminate?
it should not

Customer :

open between pin 8 and 9 on the 20 pin connector

15yearsaturnguy :

you mean internal to the trans valve body it is open?

Customer :

no the connector coming from tcm c2 the connects to the valve body

15yearsaturnguy :

thats not what you should be checking

15yearsaturnguy :

you should be checking first for 12v (light lit on 5501)

then for no short to power on the ground wire (light NOT ON in 5502)

15yearsaturnguy :

if those are both correct then test the resistance of the solenoid in the vb by probing the vb connector (trans side) for resistance through the solenoid itself

15yearsaturnguy :

both thest light tests are done with the clip on b-

Customer :

ok will do

15yearsaturnguy :

sorry, the second test is with the test light clipped to B+

Customer :

i did get the 12v on (5501)...i got 1.8V on (5502)...and measured 23 ohm on the vb between 5501 and 5502 ckt

15yearsaturnguy :

retest 5502 with a test light clipped to b+

Customer :

ok

15yearsaturnguy :

.

Customer :

light did not turn on from b+ to 5502 when ign was on

15yearsaturnguy :

ok and the solenoid has how many ohms?

Customer :

23

15yearsaturnguy :

ok give me a sec

Customer :

i want to mention that the vss always shows 2mph. we changed the both input and out put speed sensor to no avail even when we drive it is stuck on 2

15yearsaturnguy :

ok straight from the gm website...the trans computer is faulty.

I would like you to reconnect all connectors, disconnect the battery cables and touch them together for 1 full minute to clear out all memory, reconnect them and drive it. see what codes return

15yearsaturnguy :

if these same codes return the tcm is bad

15yearsaturnguy :

let me know how you make out with that

Customer :

i will do that

15yearsaturnguy :

good luck

Customer :

it did the same the only code was P1882 and the VSS shows only 2mph..can you give me some advise on how to check the speed sensor ckt.. this is the second VSS from the dealer we put into this unit

15yearsaturnguy :

it is looking like a bad tcm

15yearsaturnguy :
1. Turn OFF the ignition.
2. Disconnect the TCM C2 connector.
3. Using a DMM , measure the resistance between the TCM connector terminals C2–55 and C2–58.


Is the resistance within the specified range?

15yearsaturnguy :

1,000–2,000 Ω

15yearsaturnguy :

if it isn't the sensor is bad (doubtful)

15yearsaturnguy :

if it is then Measure the resistance between TCM terminal C2–58 and ground.

Is the resistance greater than the specified value of 50K OHMS?

15yearsaturnguy :

if it is NOT then

1. Leave the DMM connected between TCM terminal C2–58 and ground.
2. Disconnect the AT inline 20-way connector.
3. Measure the resistance between TCM terminal C2–58 and ground.


Is the resistance greater than the specified value of 50K ohms?

15yearsaturnguy :

if not then the wire is shorted to ground

15yearsaturnguy :

also check for ac voltage at the sensor by testing it this way

1. Connect the DMM between TCM terminal C2–55 and C2–58.
2. Place the transmission in PARK.
3. Start the engine.


Is the AC voltage equal to or greater than the specified value (.5V AC)?

15yearsaturnguy :

those tests are for the ISS

15yearsaturnguy :

can you read iss and oss data when driving the truck?

15yearsaturnguy :

rpm data from the sensors?

Customer :

1.5k ohm between c2-55 and c2-58

15yearsaturnguy : .
Customer :

the connection between c2-58 and ground is completely open (no resistance) even when i disconnected the 20 pin connector

15yearsaturnguy :

that is correct readings. as it should be

now test the OSS ckt the same way

15yearsaturnguy :

read c2 54 and c2 6 should be between 1 and 2 K OHMS

then read c2 54 and ground. should be OL (NO CONTINUITY)

if all is OK then do the AC mV testing on both ckts

if above .5mV then the issue is in the TCM

Customer :

with c2 not connected im measure 5.3 VAC between C2-55 and C2-58.. with car in park and engine on

Customer :

i cant get the .5mv for the oss ckt

15yearsaturnguy :

thats because the vehicle must be moving. sorry I forgot to mention that

Customer :

the speedometer works but the vss on the scan tool shows 2mph no matter how fast we r going

15yearsaturnguy :

if this is a FWD, jack up the ft wheels, if awd lift all 4 off the ground and repeat the test

if you get above .5mV from the oss then the tcm must be the issue

15yearsaturnguy :

what type of scan tool is that?

Customer :

snap on solus ultra

15yearsaturnguy :

this may be a scan tool anomoly because the oss populates the speedo via the ecm and bcm

15yearsaturnguy :

it feeds the reading to the pcm which sends it to the bcm which sends it to the gage

15yearsaturnguy :

so if the gage is working then I doubt the iss/oss sensors are reading wrong, it may be a software glitch in the solus

15yearsaturnguy :

all things are pointing to a bad tcm.

15yearsaturnguy :

since you read proper resistance through the solenoids from the tcm to the tcm that verified the wiring is all connected.

15yearsaturnguy :

just be sure the powers and grounds for the tcm are all ok before you replace it

Customer :

i will buy a different computer...thanks again

15yearsaturnguy :

my pleasure.

but check powers and grounds first...

see attached diagram

15yearsaturnguy :

Full Size Image

15yearsaturnguy :

the 3 fuses send power and then there are the 2 grounds

check them with a high current test light

15yearsaturnguy :

I like to use a halogen bulb (headlamp bulb) attach across the powers and grounds, make sure the light lights for all 3 powers and both grounds for at least 5 seconds each

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25 years automotive experience, 15 years with Saturn