Question about 2000 Isuzu Trooper

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I recently had a diagnostics done on my 2000 Isuzu Trooper and the result was a P1860 code. It referred to a tcc pwm solenoid circuit failure. If the solenoid is replaced will this fix my flashing check transmission light?

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  • Anonymous Mar 18, 2014

    MY TRUCK CANT MOVE FAST BECAUSE THE REV COUNTER IS NOT GOING BEYOND 2000 AND THE SEPEND IS JUST ON 80KM/PER THAT THE HUGHEST SPEND IT CAN GO. AND I TOOK IT FOR DIAGNOSTICS AND THE RESULTS ARE: ( TURBO/ SUPER CHARGER BOOST CONTROL SOLENOID CIRCUIT/OPEN)

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If it is in the solenoid itself, yes. If it is in the wiring or the computer, no. The only way to tell, is to replace the solenoid and turn off the light. Or do some extensive search in the wiring harness.

Posted on Mar 07, 2009

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If that was the only DTC showing up then most likely it will.

Posted on Apr 20, 2009

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1 Answer

Where is the tcc selenoid location on a 2001 isuzu trooper gm4l30e transmission? im trying to replace this part due to a p1860 error code which is 'torque converter clutch selenoid circuit failure'


the transmission is super common GM box.
no lack free books ever google, 4L30 yet>

TCC has 2 parts not just one, 3 counting the TCM driver.
and 4 counting wire to and from.
the TCC lock is solenoid lock.
http://www.makcotransmissionparts.com/4l30e.html

http://www.makcotransmissionparts.com/mm5/graphics/Catalog-pdf/4L30E.pdf



the device below is just 1/2 half the path, to the actual lock.
the TCM engages this part below and it sends pressure to the
actual lock.either can fail, so can TCM.
its in the transmission.
the valve body.
the question really is which pan tiny or big.
2 in the front (here) see photo at end
3 in the rear, VB. not here total 5
the TCC on this car is PWM type. (modulated 2000+)

shows the conversion and how it all works too. all on one page.
http://www.atraonline.com/gears/2006/2006-03/2006-03_4.pdf

tcc-cumberlcvpguaemnsvjvleah-1-0.jpg

sol-tcc-cumberlcvpguaemnsvjvleah-1-1.jpg

Mar 05, 2017 | 2001 Isuzu Trooper

1 Answer

I have a 2001 aurora and code p1860 p1860 came up what is this and how much to fix


P1860 All GM - TCC (transmission Torque Converter Clutch) PWM Solenoid Circuit Electrical.
P1860 Description The Torque Converter Clutch Pulse Width Modulation (TCC PWM) solenoid valve controls the fluid acting on the converter clutch valve. The converter clutch valve controls the TCC application and release. The solenoid attaches to the control valve body within the transmission. The solenoid receives ignition voltage through circuit 239. The Powertrain Control Module (PCM) controls the solenoid by providing a ground path on circuit 418. Current flows through the solenoid coil according to the duty cycle (percentage of ON and OFF time). The TCC PWM solenoid valve provides a smooth engagement of the torque converter clutch by operating during a duty cycle percent of ON time.
When is the code detected? When the PCM detects a continuous open, short to ground or short to power in the TCC PWM solenoid valve circuit, then DTC P1860 sets. DTC P1860 is a type B DTC.

Possible causes - Faulty Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid
- Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid harness is open or shorted
- Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid circuit poor electrical connection. Unless you have a factory manual and very good auto repair skills this is best left to an expert. It is a messy dirty job that requires removing the parts inside the transmission for testing..

Aug 23, 2016 | Cars & Trucks

1 Answer

1996 Pontiac firebird v6 3.8L error code p1860 p1860pd p0306 p1460pd changed tcc pwm solenoid code still won't clear others only appear during a 100 mile drive cycle please help!!!


You replaced the TCC solenoid , but did you test the electrical circuit ? Code description - DTC P1860 TCC PWM Solenoid Circuit Electrical. - YOU SEE SOLENOID CIRCUIT ELECTRICAL - no where does it say to replace the solenoid . TEST THE ELECTRICL CIRCUIT ! P0306 should set right away if misfire is present . P0306 cylinder # 6 misfire !
The TCC PWM Solenoid Valve controls the fluid acting on the converter clutch valve, which then controls the application and release of the TCC. The solenoid attaches to the control valve body within the transmission. Circuit 439 supplies ignition voltage directly to the solenoid. The PCM controls the solenoid by providing a ground path on circuit 418. Current flows through the solenoid coil according to the duty cycle (percentage of ON and OFF time). The TCC PWM Solenoid Valve provides a smooth engagement of the torque converter clutch by operating during a duty cycle percent of ON time.
When the PCM detects a continuous open or a short to ground in the TCC PWM circuit or the TCC PWM Solenoid Valve, then DTC P1860 sets. DTC P1860 is a type A DTC.
Diagnostic Aids
?€¢
Inspect the wiring for any poor electrical connections at the PCM. Inspect the wiring at the transmission 20-way connector. Look for the following conditions:


-
A bent terminal


-
A backed out terminal


-
A damaged terminal


-
Poor terminal tension


-
A chafed wire


-
A broken wire inside the insulation


?€¢
When diagnosing for an intermittent short or an open condition, massage the wiring harness while watching the test equipment for a change



2

  1. Install the scan tool.
  2. With the engine OFF, turn the ignition switch to the RUN position.
  3. Important: Before clearing the DTCs, use the scan tool in order to record the Freeze Frame and the Failure Records for reference. The Clear Info function will erase the data.
  4. Record the DTC Freeze Frame and the DTC Failure Records.
Are DTCs P0753, P0758, P1860, P1864, or P1886 set?
--
Go to Step 3
Go to Step 4

3

Inspect circuit 439, the solenoid, the PCM IGN fuse, and the Automatic Transmission Wiring Harness for an open or a short to ground.
Refer to Electrical Diagnosis, Section 8.
Did you find and correct a problem?
--
Go to Step 17
--

4
  1. Turn the ignition switch to the OFF position.
  2. Disconnect the transmission 20-way connector (additional DTCs may set).
  3. Install the J 39775 Jumper Harness on the engine harness connector .
  4. With the engine OFF, turn the ignition switch to the RUN position.
  5. Connect a lest lamp from the J 39775 Jumper Harness connector cavity E to ground.
Does the test lamp illuminate?
--
Go to Step 6
Go to Step 5

5

Repair the open in the ignition feed circuit 439 to the TCC PWM Solenoid Valve. Refer to Electrical Diagnosis, Section 8.
Is the repair complete?
--
Go to Step 17
--

6
  1. Install the test lamp from cavities E to U of the J 39775 Jumper Harness connector .
  2. Using the scan tool, command the TCC PWM Solenoid Valve ON and OFF 3 times.
Does the test lamp illuminate when you command the TCC PWM Solenoid Valve ON, and turn OFF when you command the valve OFF?
--
Go to Step 8
Go to Step 7

7

  1. Inspect circuit 418 for an open.
  2. Inspect circuit 418 for a short to ground.
  3. Repair the circuit if necessary.
Refer to Electrical Diagnosis, Section 8.
Did you find and correct a problem?
--
Go to Step 17
Go to Step 9

8
  1. Install the J 39775 Jumper Harness on the Connector End View 20-way connector.
  2. Using the J 39200 DVOM and the J 35616-A Connector Test Adapter Kit, measure the resistance between terminals E and U.
Is the resistance within the specified range?
10-15ohms
Go to Step 11
Go to Step 10

9

Inspect the PCM connector terminals for the following conditions:
  1. Damaged connector pins
  2. Backed out connector pins
  3. Weak terminal tension
  4. Repair the connectors if necessary.
Did you find and correct a problem?
--
Go to Step 17
Go to Step 16

10

  1. Disconnect the Automatic Transmission Wiring Harness at the TCC PWM Solenoid Valve.
  2. Measure the resistance of the TCC PWM Solenoid Valve.
Is the resistance within the specified range?
10-15ohms
Go to Step 12
Go to Step 15

11

Using the J 39200 DVOM and the J 35616-A Connector Test Adapter kit, measure the resistance between terminal E of the J 39775 Jumper Harness and the transmission case (ground). Measure the resistance between terminal U of the J 39775 Jumper Harness and the transmission case (ground).
Are both readings greater than the specified value?
250ohms
Go to Diagnostic Aids
Go to Step 13

12

  1. Inspect the Automatic Transmission Wiring Harness for an open or short to ground.
  2. Repair the harness if necessary.
Refer to Electrical Diagnosis, Section 8.
Did you find and repair a problem?
--
Go to Step 17
--

13

  1. Disconnect the Automatic Transmission Wiring Harness at the TCC PWM Solenoid Valve.
  2. Measure the resistance between each of the component terminals and the transmission case (ground).
Are both readings greater than the specified value?
250ohms
Go to Step 14
Go to Step 15

14

  1. Inspect the Automatic Transmission Wiring Harness for a short to ground.
  2. Repair the harness if necessary.
Refer to Electrical Diagnosis, Section 8.
Was a problem found and corrected?
--
Go to Step 17
--

15

Replace the TCC PWM Solenoid Valve.
Refer to Torque Converter Clutch Pulse Width Modulation Solenoid Valve Replacement, in On-Vehicle Service.
Is the replacement complete?
--
Go to Step 17
--

16

Replace the PCM.
Refer to Powertrain Control Module Replacement/Programming , Section 6.
Is the replacement complete?
--
Go to Step 17
--

17

  1. After the repair is complete, select DTC.
  2. Select Clear Info.
  3. Ensure the following conditions:
  4. ?€¢
    When you command the TCC PWM Solenoid Valve ON, the voltage drops to zero.


    ?€¢
    When you command the TCC PWM Solenoid Valve OFF, the voltage increases to B+.


    ?€¢
    All conditions met for 5 seconds.

  5. Select Specific DTC and enter DTC P1860.
Has the test run and passed?
--
System OK
Begin diagnosis the again. Go to Step 1

Jun 28, 2016 | Pontiac Cars & Trucks

1 Answer

P1860 CODE CHEVY S10 TRUCK 1998


Possible causes
- Faulty Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid
- Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid harness is open or shorted
- Torque Converter Clutch Pulse Width Modulation (TCC PWM) Solenoid circuit poor electrical connection

Aug 28, 2014 | Cars & Trucks

1 Answer

Code p1860 comes up when I scanned a 2000 Isuzu rodeo. can you help?


That code indicates a TCC PWM Solenoid Circuit Failure (torque converter clutch pulse width modulation (TCC PWM) solenoid valve controls the fluid acting on the converter clutch valve):
http://www.troublecodes.net/isuzu/iszuobd2.shtml
is where I found that information.
I hope that will help.

Dec 13, 2011 | 2000 Isuzu Rodeo

1 Answer

I have a 2001 caddy deville that i am buying there is a code that comes up P1860 can you tell me what that is Thank you Paul


Circuit Description with 4T80-E Automatic Transaxle
Ignition voltage is provided to the torque converter clutch pulse width modulated (TCC PWM) solenoid valve. The PCM controls the ON and OFF time of the solenoid by providing a ground through the output driver module (ODM) . The PCM uses a PWM duty cycle, in order to control application and release of the TCC. When the solenoid is commanded OFF, the PCM senses high volts. When the solenoid is commanded ON, the PCM senses low volts. If the PCM detects a continuous open, short to ground or short to voltage in the TCC PWM solenoid valve circuit, then DTC P1860 sets. DTC P1860 is a type B DTC.

Conditions for Running the DTC
  • The system voltage is 8-18 volts
  • The engine run time is greater than 5 seconds.
  • The TCC PWM solenoid valve duty cycle is 10% or less or 90% or greater.
Conditions for Setting the DTC
The TCC PWM solenoid valve feedback circuit indicates a continuous open, short to ground or short to voltage for 4.3 seconds.

Sep 23, 2010 | Cadillac DeVille Cars & Trucks

1 Answer

ObdII code p1860


CODE PO1860 TCC PWM SOLENOID CIRCUIT MALFUNCTION CONDITIONS. POSSIBLE CAUSE FAULT IN TCC SOLENOID EITHER OPEN OR SHORT TO GROUND.CHECK TRANSMISSION FUSE.

Aug 05, 2010 | 1999 Chevrolet Cavalier

2 Answers

I put a used transmission in my 2002 Isuzu Rodeo and code P1860 came on how can I fixed the problem if there is one


CODE P1860 TORQUE CONVERTER CLUTCH PWM SOLENOID CIRCUIT MALFUNCTION. THE TCC PWM SOLENOID FAILED.

Jul 09, 2010 | Cars & Trucks

1 Answer

Servise engine light on the code is p1860


code - po1860 tcc pwm solenoid circuit malfunction 4t80- E conditions.5 possible causes 1. tcc solenoid control circuit is open or shorted to ground. 2.tcc solenoid control circuit is shorted to system power b+. 3.tcc solenoid power circuit is open check the trans fuse. 4.tcc solenoid is damaged or has failed. 5.pcm has failed.

Dec 07, 2009 | 2001 Cadillac DeVille

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