TCS light After installing new ignition electrical harness, the ABS and TCS lights come on after a short while moving in drive.Have disconnected negative terminal from battery to reset ECU and removed the proper fuses to also try to reset but still these lights come on. ?? HAVE NOT PULLED CODES FOR ABS AND TCS. all had been working fine before my ownership of the last 24,000 miles. 191,000 miles on this vehichle now.

PRE-DIAGNOSTIC INSPECTIONBefore diagnosing ABS/TCS, perform a comprehensive visual inspection of system as follows.Check ABS/TCS wiring harness connectors for looseness. Check harness routing; pay particular attention to wheel speed sensor wiring harness routing. Check fuses No. 1D, 5B and 6B in instrument panel fuse block. Check fuses No. 1 and 2 in underhood fuse block. Check brake fluid level in master cylinder reservoir. Check brake fluid level in Pressure Modulator Valve (PMV) assembly reservoir. Ensure parking brake is fully released. Ensure parking brake switch is functioning properly. Always perform ABS/TCS system functional check before using DIAGNOSTIC CODE CHARTSThe EBCM/EBTCM has self-diagnostic capability, which can detect system failures. Fault codes stored by EBCM/EBTCM can be displayed using Tech 1 scan tester. There are no provisions for flash code diagnostics.Begin ABS/TCS diagnosis with PRE-DIAGNOSTIC INSPECTION procedure. If failures are found during pre-diagnostic inspection, perform necessary repairs, and proceed with ABS/TCS FUNCTIONAL CHECK. See Fig. 5 .If no failures are found during pre-diagnostic inspection, go to ABS/TCS FUNCTIONAL CHECK. See Fig. 5 . The ABS/TCS FUNCTIONAL CHECK will either indicate ABS/TCS is functioning properly or direct technician to various diagnostic procedures such as diagnostic charts, symptom diagnosis or BRAKE warning light diagnosis.CHART D - TRACTION OFF WARNING LIGHT ON CONTINUOUSLY & NO DTC SET (BUICK WITH UH8 OR U2A INSTRUMENT CLUSTER)Circuit DescriptionWhen ignition switch is first turned to RUN position, EBTCM goes through a self-test, which lasts 2-4 seconds. During self-test, EBTCM commands TRACTION OFF indicator warning light on. Powertrain Control Module (PCM) can also command EBTCM to set a Code 75 which will illuminate TRACTION OFF indicator.Traction control switch is located either on instrument panel center trim plate or driver's front door trim panel. Switch allows driver to select traction control mode (on/off). When traction control system is turned off, TRACTION OFF warning light comes on.EBTCM monitors transaxle temperature through

Heated Oxygen Sensor

• REMOVAL & INSTALLATION
• TESTING

Print

Removal & Installation

3.5L

WARNING When disconnecting the sensor electrical connector, do not pull directly on wire going into sensor.

1. Disconnect the negative battery cable.
2. Disconnect the heated oxygen sensor electrical connector.
3. Use a socket such as a crowfoot wrench to remove oxygen sensor.

To Install:

NOTE When replacing an O2 Sensor, the PCM RAM memory must be cleared, either by disconnecting the PCM C-1 connector or momentarily disconnecting the Battery negative terminal. The NGC learns the characteristics of each O2 heater element and these old values should be cleared when installing a new O2 sensor. The customer may experience driveability issues if this is not performed.

1. After removing the sensor, the threads must be cleaned with an 18 mm X 1.5 + 6E tap. If reusing the original sensor, coat the sensor threads with an anti-seize compound such as Loctite 771- 64 or equivalent. New sensors have compound on the threads and do not require an additional coating. Tighten the sensor to 28 Nm (20 ft. lbs.) torque.
2. Connect the heated oxygen sensor electrical connector.
3. Install the wiring clip to the heat shield.
4. Connect the negative battery cable.
   
   

   Fig.
   

3.8L Downstream Sensor

WARNING When disconnecting the sensor electrical connector, do not pull directly on wire going into sensor.

1. Disconnect negative battery cable.
2. Raise and support vehicle.
3. Disconnect the electrical connector.
4. Use a socket such as a crowfoot wrench to remove oxygen sensor.

3.8L Upstream & Downstream Sensors

NOTE When replacing an O2 Sensor, the PCM RAM memory must be cleared, either by disconnecting the PCM C-1 connector or momentarily disconnecting the Battery negative terminal. The NGC learns the characteristics of each O2 heater element and these old values should be cleared when installing a new O2 sensor. The customer may experience driveability issues if this is not performed.

1. After removing the sensor, the threads must be cleaned with an 18 mm X 1.5 + 6E tap. If reusing the original sensor, coat the sensor threads with an anti-seize compound such as Loctite 771- 64 or equivalent. New sensors have compound on the threads and do not require an additional coating. Tighten the sensor to 28 Nm (20 ft. lbs.) torque.
2. Connect the heated oxygen sensor electrical connector.
3. Connect the negative battery cable.

3.8L Upstream Sensor

WARNING When disconnecting the sensor electrical connector, do not pull directly on wire going into sensor.

1. Disconnect negative battery cable.
2. Disconnect the upper O2 sensor connector.
3. Use a socket such as a crowfoot wrench to remove oxygen sensor.
   
   

   Fig.
   
   
   

   Fig.
   

To Install:

Testing


NOTE Allow the O2 Sensor to cool down before conducting the test. The O2 Sensor voltage should stabilize at 5.0 volts. Raising the hood may help in reducing under hood temps quicker.

1. Turn the ignition on, engine not running. With the scan tool, actuate the O2 Heater Test.
2. With the scan tool, monitor O2 Sensor voltage for at least 2 minutes. Does the O2 Sensor voltage stay above 4.5 volts- If so, sensor is normal.
3. If voltage does not stay above 4.5v as indicated, check wiring and connectors. Check O2 sensor for contamination.
4. If wiring from the O2 sensor is damaged, DO NOT repair it; replace the O2 sensor.
5. Turn the ignition off. Allow the O2 sensor to cool down to room temperature.
6. Disconnect the O2 Sensor harness connector.
7. Measure the resistance across the O2 Sensor Heater element component side. Resistance for either O2 Sensor should be 2.1-2.7 ohms.
8. If the O2 Sensor is not within range, turn the ignition off.
9. Disconnect the O2 Sensor harness connector. Turn the ignition to ON; engine not running.
10. With the proper scan tool, actuate the O2 Heater Test.
11. Using a 12-volt test light connected to ground, probe the O2 Heater Control circuit in the O2 Sensor harness connector.
12. If the test light illuminates brightly and flashes on and off, replace the O2 Sensor.
13. Confirm the repair with the appropriate Verification Test.
14. Turn the ignition off.
15. Disconnect the O2 Sensor harness connector.
16. Disconnect the PCM harness connector.
17. Measure the resistance between ground and the O2 Heater Control circuit in the O2 Sensor harness connector.
18. Is the resistance below 5.0 ohms- If yes, repair the short to ground in the O2 Sensor Heater Control circuit. If resistance is okay, go to step 20.
19. Confirm the repair.
20. If resistance was okay when measured in step 17, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.
21. If the resistance is still not within specified range, replace and program the Powertrain Control Module in accordance with the service information.
22. Confirm the repair.

The Engine Control Module (ECM) receives two vehicle speed sensor signals via the Control Area Network (CAN) communication line. One is sent from Vehicle Dynamic Control (VDC) / Traction Control System (TCS) / Anti-Lock Brake System (ABS) control unit, and the other is from Transmission Control Module (TCM). ECMuses these two signals for engine control. Possible Causes: - VDC/TCS/ABS to ECM circuit harness is open or shorted
- TCM to ECM circuit harness is open or shorted
- VDC/TCS/ABS to ECM circuit connectors
- TCM to ECM circuit connectors
- Faulty revolution sensor

CODE P1574 - ASCD VECHICLE SPEED SENSOR. POSSIBLE CAUSES, HARNESS OR CONNECTORS CAN COMMUNICATION LINE IS OPEN OR SHORTED. UNIFIED METER AND AC AMP. VDC TCS ABS CONTROL UNIT WITH VDC MODELS. ABS ACTUATOR AND ELECTRIC UNIT CONTROL UNIT WITHOUT VDC MODELS. FAULTY WHEEL SENSOR. TCM AT MODELS. ECM FAILED.

Remove the accessory drive belt. Disconnect the negative battery cable. Disconnect the generator electrical connector. Remove the engine harness terminal from the generator: - Slide the boot back along the cable. - Remove the engine harness cable nut (3). - Remove the engine harness terminal from the stud. Remove the generator bolts and generator. Install the generator. Install the generator bolts. Tighten the generator bolts to 50 N?m (37 lb ft). Install the engine harness terminal to the generator: - Install the engine harness terminal to the stud. - Install the engine harness cable nut (3). Tighten Tighten the engine harness cable nut to 13 N?m (10 lb ft). - Slide the boot over the generator stud. Connect the generator electrical connector (1). Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure . Install the accessory drive belt

Starter Motor -located to articulate with flywheel that has gear teeth between the engine and transmission accessible from down below. REMOVAL & INSTALLATION 240SX WITH AUTOMATIC TRANSMISSION

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Support the transmission with a jack and remove the 4 rear mounting bracket bolts.
3. Lightly lower the transmission to make room and pull out the dipstick tube.
4. Remove or disconnect the following:
   • Negative battery cable
   • Connector bracket from the front mount bracket
   • Harness connector
   • Starter bolts
   • Starter
   To install:
   
5. Install or connect the following:
   • Starter and torque the bolts to 30-37 ft. lbs. (40-50 Nm)
   • Harness connector
   • Connector bracket to the front mount bracket
   • Dipstick tube
   • Transmission into position
   • 4 rear mounting bracket bolts
   • Negative battery cable
6. Remove the transmission jack

WITH MANUAL TRANSMISSION

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Connector bracket from the front mount bracket
   • Harness connector
   • Starter bolts
   • Starter
   To install:
   
3. Install or connect the following:
   • Starter and torque the bolts to 30-37 ft. lbs. (40-50 Nm)
   • Harness connector
   • Connector bracket to the front mount bracket
   • Negative battery cable

1.6L and 2.0L Engines

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Wiring at the starter
   • Bolts attaching the starter to the engine
   • Starter
   To install:
   
3. Install or connect the following:
   • Starter and torque the bolts to 70 inch lbs. (8 Nm)
   • Starter electrical connections
   • Negaative battery cable

Maxima

1. Remove or disconnect the following:
   • Negative battery cable
   • Air duct
   • Harness protector from the harness
   • Starter wiring at the starter
   • Starter-to-engine bolts
   • Starter from the vehicle

     Image 89612G12l Not Found
     

   To install:
   
2. Install or connect the following:
   • Starter and torque the long bolt to 57-72 ft. lbs. (77-98 Nm) and the short bolt to 22-30 ft. lbs. (30-41 Nm)
   • Starter wiring
   • Harness protector
   • Air duct
   • Negative battery cable

Altima

1. Remove or disconnect the following:
   • Negative battery cable
   • Air inlet tube
   • Harness bracket
   • Wiring at the starter
   • Starter
   To install:
   
2. Install or connect the following:
   • Starter and torque the bolts to 60 inch lbs. (7 Nm)
   • Starter electrical connectors
   • Harness bracket
   • Air inlet tube
   • Negative battery cable

Nissan Car Altima & Sentra 1999-06 StarterRemoval & Installation

1. Remove or disconnect the following:
   Negative battery cable Air duct Harness protector from the harness Starter wiring at the starter Starter-to-engine bolts Starter from the vehicle



Fig. Starter location and mounting detail-3.0L Maxima with a manual transaxle



Fig. Starter location and mounting detail-3.5L Maxima

To install:

1. Install or connect the following:
   Starter and torque the long bolt to 57-72 ft. lbs. (77-98 Nm) on Altima and Maxima and 41 ft. lbs. (55 Nm) on 350 Z. torque the short bolt to 22-30 ft. lbs. (30-41 Nm) Starter wiring Harness protector Air duct Negative battery cable

1. Remove or disconnect the following:
   Negative battery cable Air inlet tube Harness bracket Wiring at the starter Starter

To install:

1. Install or connect the following:
   Starter and torque the bolts to 60 inch lbs. (7 Nm) Starter electrical connectors Harness bracket Air inlet tube Negative battery cable

1.6L & 2.0L Engines

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   Negative battery cable Wiring at the starter Bolts attaching the starter to the engine Starter

To install:

1. Install or connect the following:
   Starter and torque the bolts to 70 inch lbs. (8 Nm) Starter electrical connections Negaative battery cable
   

1.6L, 1.8L & 2.0L Engines

1. Before servicing the vehicle, refer to the Precautions section.
2. Remove or disconnect the following:
   Negative battery cable Wiring at the starter Bolts attaching the starter to the engine Starter

To install:

1. Install or connect the following:
   Starter and torque the bolts to 70 inch lbs. (8 Nm) Starter electrical connections Negative battery cable
   

1.8L & 2.0L Engines

1. Before servicing the vehicle, refer to the Precautions section.
   
2. Remove or disconnect the following:
   Negative battery cable Wiring at the starter Bolts attaching the starter to the engine Starter
   

To install:

1. Install or connect the following:
   Starter and torque the bolts to 70 inch lbs. (8 Nm) Starter electrical connections Negative battery cable
   

2.4L & 2.5L Engines

1. Remove or disconnect the following:
   Negative battery cable Air inlet tube Harness bracket Wiring at the starter Starter

To install:

1. Install or connect the following:
   Starter and torque the bolts to 60 inch lbs. (7 Nm) Starter electrical connectors Harness bracket Air inlet tube Negative battery cable
   

2.4L Engine

1. Remove or disconnect the following:
   Negative battery cable Air inlet tube Harness bracket Wiring at the starter Starter
   

To install:

1. Install or connect the following:
   Starter and torque the bolts to 60 inch lbs. (7 Nm) Starter electrical connectors Harness bracket Air inlet tube Negative battery cable

2.5L Engine

1. Remove or disconnect the following:
   Negative battery cable Air cleaner cover and duct Harness bracket Wiring at the starter Starter

To install:

1. Install or connect the following:
   Starter and torque the bolts to 60 inch lbs. (7 Nm) Starter electrical connectors Harness bracket Air inlet tube Negative battery cable

3.5L Engines

1. Remove or disconnect the following:
   Negative battery cable Air cleaner case (upper) and air cleaner to electric throttle control actuator tube. Harness protector from the harness Starter wiring at the starter Starter-to-engine bolts Starter from the vehicle
   
   
   Fig. Starter location and mounting detail-3.5L engine
   

continue...

Your TripTronic shifter doesn't work because of a bad ground connection to a solenoid located in the transmission pan.
The ABS module is under the hood, and shouldn't be too far from the brake master cylinder. It has 4 metal tubes going in, and 4 going out. It has two electrical connectors, one on the top where the retaining clip slides out, then pull upward to disconnect harness. The other is on the bottom with a more standard clip and pull down to release harness.
Do not disconnect any of the metal brake lines to the pump, or your brakes will not operate. The control module is held on to the pump by 6 torx screws. Only remove for repair, because disconnection will not turn off the warning lights. Repairs can be done for under $200 at modulemaster.com and the car will drive with out it.
Getting the ABS control back means betting the TCS back as well. Also known as the ElectronicBrake&TractionControlSystem EBTCS
Good Luck!

1. Disconnect the negative battery cable.
2. Remove the steering column shroud and lower the steering column.
3. Disconnect the ignition switch electrical harness connector.
4. Remove the 2 nuts retaining the ignition switch to the steering column housing.
5. Lift the ignition switch upward to disengage the actuator rod from the switch and remove the switch.

To install:
When installing the ignition switch, both the locking mechanism at the top of the column and the switch itself must be in the LOCK position for correct adjustment. To hold the mechanical parts of the column in the LOCK position, move the shift lever into PARK (with automatic transmissions) or REVERSE (with manual transmissions), turn the key to the LOCK position, and remove the key. New replacement switches, when received, are already pinned in the LOCK position by a metal shipping pin inserted in a locking hole on the side of the switch.

1. Engage the actuator rod in the ignition switch.
2. Place the ignition switch on the steering column housing and loosely install the 2 retaining nuts.
3. Move the switch up or down along the column to locate the mid-position of the actuator rod lash, then tighten the retaining nuts to 47-64 inch lbs. (5-7 Nm).
4. Raise the steering column into position at instrument panel. Install steering column shroud.
5. Connect the negative battery cable.
6. Remove the locking pin, connect the negative battery cable, and verify that the engine will only crank in PARK and NEUTRAL . Also check to make certain that the start circuit cannot be actuated in the DRIVE and REVERSE positions.

3rd dealer stated that the problem was in the differential pump valve, when the temperture sensor was giving a false reading and disconnecting the rear wheel drive. Replaced with GM Part 88896067, and it solved the problem. Mechanic stated that if it is ONLY the AWD light, then this is usually the problem. If the ABS Disable light also goes on, then it is the harness on the wheel sensor.