Engine electrical equipment Toyota Highlander 1 (XU20)

Engine Electrical System Specifications
Charging system Battery voltage - 12.5-12.9 V Charging voltage - 13.2-14.8 V Tightening torques for threaded connections, Nm (unless otherwise stated) Starter mounting bolts Models with four-cylinder engines 2001-2003 —...

General information, precautions and disconnecting the battery
Engine electrical systems are the ignition, charging and starting systems. Because their functions are engine dependent, they are considered separately from body electrical equipment such as lights, instruments, etc....

Battery — starting from an external battery
Refer to paragraph " Starting the engine from an external battery " at the beginning of this Guide.

Battery — Checking and Replacing
Examination 1. Disconnect the ground cable from the battery, then the positive cable. 2. Check the battery charge status. Visually inspect the indicator on the top surface of the battery. If the indicator is black,...

Battery Cables — Checking and Replacing
1. Periodically inspect each battery cable along its entire length for damage, cracks in the casing, or burnt insulation and traces of corrosion. Poor condition of battery cables can cause problems with starting and...

Ignition system — general information and precautions
1. All models covered by this Manual are equipped with a computerized electronic ignition system. The ignition system includes a camshaft position sensor (CMP), a crankshaft position sensor (CPS), a number of other...

Ignition system — check
Caution! Due to the high voltage generated in the ignition system, use extreme caution when servicing or testing components of this system. This applies not only to coils and spark plugs, but also to testing equipment....

Ignition coils — replacement
Note: Toyota and Lexus vehicle manufacturers do not publish resistance values for the primary and secondary circuits of the ignition coils/control units used on these models. 1. Disconnect the ground cable from the...

Charging system — general information and precautions
The charging system includes the alternator, voltage regulator, battery charge control pump, battery, fuse link and wiring that connects all of these components. The charging system supplies electrical power to the...

Charging system — check
1. If a fault occurs in the charging circuit, do not rush to assume that the generator is to blame. First, check the following points: a) Make sure that the wire clamps on the battery terminals are clean and securely...

Generator — removal and installation
Removal 1. Disconnect the ground cable from the battery (see paragraphs 1 and 3 ). 2. Remove the alternator drive belt ( see chapter 1 ). Models with four-cylinder engine 3. Disconnect the electrical connectors on the...

Starting System — General Information and Precautions
The starting system includes a battery, a starter, a starter solenoid, and wires connecting these elements. The solenoid is mounted directly on the starter. The solenoid assembly with the starter is located on top of...

Starter and electrical circuit — check
1. If a fault occurs in the starting electrical circuit, do not rush to think that the starter is to blame. First, check the following points: a) Make sure that the wire clamps on the battery terminals are clean and...

Starter — removal and installation
Models with four-cylinder engines 1. Disconnect the ground cable from the battery (see paragraphs 1 and 3 ). 2. On 2003 and earlier models, remove the air cleaner housing and air intake duct ( see chapter 4 ). On 2004...

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