Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSLEXUS1997ES 300 V6-3.0L (1MZ-FE)REPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDIAGRAMSDIAGNOSTIC AIDSHOW TO REPLACE TERMINALS
1997 Lexus ES 300 V6-3.0L (1MZ-FE)
How to Replace Terminals
1997 Lexus ES 300 V6-3.0L (1MZ-FE)SECTION How to Replace Terminals
Special Tool:
With terminal retainer or secondary locking device
1. Prepare The Special Tool
HINT: To remove the terminal from the connector, please construct and use the special tool or like object shown on the left.
2. Disconnect Connector
Secondary Locking Device Or Terminal Retainer:
3. Disengage The Secondary Locking Device Or Terminal Retainer.
(a) Locking device must be disengaged before the terminal locking clip can be released and the terminal removed from the connector.
(b) Use a special tool or the terminal pick to unlock the secondary locking device or terminal retainer.
NOTE: Do not remove the terminal retainer from connector body.
Non-Waterproof Type Connector:
A - For Non-Waterproof Type Connector
HINT: The needle insertion position varies according to the connector's shape (number of terminals etc.), so check the position before inserting it.
"Case 1"
Raise the terminal retainer up to the temporary lock position.
Non-Waterproof Type Connector:
"Case 2"
Open the secondary locking device
Non-Waterproof Type Connector:
Waterproof Type Connector:
B - For Waterproof Type Connector
HINT: Terminal retainer color is different according to connector body.
Example:
Terminal Retainer: Connector Body
Black or White : Gray
Black or White : Dark Gray
Gray or White : Black
Waterproof Type Connector:
"Case 1"
Type where terminal retainer is pulled up to the temporary lock position (Pull Type)
Insert the special tool into the terminal retainer access hole (Mark) and pull the terminal retainer up to the temporary lock position.
HINT: The needle insertion position varies according to the connector's shape (Number of terminals etc.), so check the position before inserting it.
Waterproof Type Connector:
"Case 2"
Type which cannot be pulled as far as Power Lock insert the tool straight into the access hole of terminal retainer as shown.
Terminal Retainer:
Push the terminal retainer down to the temporary lock position.
Locking Lug:
c. Release the locking lug from terminal and pull the terminal out from rear.
Installation Of Terminal To Connector:
4. Install terminal to connector
a. Insert the terminal.
HINT:
1. Make sure the terminal is positioned correctly.
2. Insert the terminal until the locking lug locks firmly.
3. Insert the terminal with terminal retainer in the temporary lock position.
Secondary Locking Device:
b. Push the secondary locking device or terminal retainer in to the full lock position.
5. Connect connector
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.