GENERATOR CABLE REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization, or registration) that must be performed after parts are removed and installed, or replaced during the generator cable removal/installation are shown below.

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

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Necessary Procedure After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Auxiliary battery terminal is disconnected/reconnected	Memorize steering angle neutral point	LKA/LDA system	Click here
		Pre-collision system	Click here
		Parking assist monitor system	Click here
	Steering sensor zero point calibration	Variable gear ratio steering system	Click here
Replacement of ECM	Vehicle Identification Number (VIN) registration	DTC P063051 is output	w/ Canister Pump Module: Click here w/o Canister Pump Module: Click here
Air leaks from intake system Gas leak from exhaust system is repaired	Inspection after repair	Poor idle, etc. Engine start function, etc.	w/ Canister Pump Module: Click here w/o Canister Pump Module: Click here
Replacement of engine assembly	Inspection after repair	Poor idle, etc. Engine start function, etc.
Replacement of engine assembly	Drive learning*2	Large shift shock Deterioration of fuel efficiency	Click here
Parts between the steering wheel and tires have been removed/installed, replaced or adjusted	Perform Actuator Angle Neutral Point Calibration and Initialization	Variable gear ratio steering system Steering wheel off-center DTCs are output	Click here
Suspension, tires, etc*1	Television camera assembly optical axis (Back camera position setting)	Parking assist monitor system	Click here
Replacement of hybrid vehicle transmission assembly	Initialize resolver*3 Resolver learning	DTCs are stored Slight vibration at a vehicle speed of 5 km/h (3 mph) or less Shock or vibration during acceleration Shock, vibration during shift operations	Click here
Replacement of hybrid vehicle transmission assembly	A/T code reset A/T code registration(Register compensation code) Drive learning	Large shift shock Deterioration of fuel efficiency	Click here

*1: The vehicle height changes due to suspension or tire replacement.
*2: After performing the confirmation driving pattern, if the shock during acceleration is large after calibrating the "A/T Code Reset", perform driving learning.
*3: If it is necessary to replace the hybrid vehicle transmission assembly, make sure to perform resolver initialization before starting work.

CAUTION:

This vehicle has contains high voltage circuits standardized with orange colored wiring and connectors, so follow the instructions in this manual to perform the procedures correctly.
If the correct procedures are not followed according to the instructions in this manual, there is a danger of electric shock from the high voltage circuits.
Be sure to wear insulating gloves when working on high voltage wiring or components.
If work is performed without wearing insulating gloves, there is a danger of electric shock.
*a An Object Exceeding Weight Limit of Engine Lifter

The engine assembly with hybrid vehicle transmission assembly is very heavy. Be sure to follow the procedure described in the repair manual, or the engine lifter may suddenly drop or the engine assembly with hybrid vehicle transmission assembly may fall off the engine lifter.
To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.

Note

After the power switch is turned off, the radio receiver assembly records various types of memory and settings. As a result, after turning the power switch off, be sure to wait for the time specified in the following table before disconnecting the cable from the negative (-) auxiliary battery terminal.

Waiting Time before Disconnecting Cable from Negative (-) Auxiliary Battery Terminal
System Name	See Procedure
Vehicle enrolled in Lexus Enform system or safety connect system	6 minutes
Vehicle not enrolled in Lexus Enform system and safety connect system	1 minute

PROCEDURE

PRECAUTION

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PERFORM RESOLVER INITIALIZATION

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REMOVE ENGINE ASSEMBLY WITH HYBRID VEHICLE TRANSMISSION

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REMOVE GENERATOR CABLE
CAUTION:

Wear insulated gloves.
Note
- Cover the hole where the generator cable was connected with tape or equivalent (non-residue type) to prevent entry of foreign matter.
- Insulate the removed terminals with insulating tape.
- When removing the generator cable, make sure not to bend the generator cable base on the hybrid vehicle transmission assembly side.
1. for LHD:
  
  Disconnect the 3 clamps of the generator cable from the engine assembly.
2. for RHD:
  
  Disconnect the 2 clamps of the generator cable from the engine assembly.
3. Using an insulated tool, remove the 2 bolts and connector cover from the hybrid vehicle transmission assembly.
4. Using a screwdriver, detach the 2 claws to remove the terminal cap from the hybrid vehicle transmission assembly.
5. Using an insulated tool, remove the 3 bolts from the generator cable terminals.
6. Using an insulated tool, remove the 2 bolts and generator cable from the hybrid vehicle transmission assembly.