Toyota RAV4 manuals

Toyota Sienna Service Manual: Check for open circuit

(a) For an open circuit in the wire harness in Fig. 1, the resistance or voltage, as described below.

For an open circuit in the wire harness, the resistance or voltage, as described below

(b) Check the resistance.

Disconnect connectors A and C and measure
 Check the resistance

Standard resistance (Fig. 2)

HINT:

Measure the resistance while lightly shaking the wire harness vertically and horizontally. If the results match the examples above, an open circuit exists between terminal 1 of connector A and terminal 1 of connector C.

(2) Disconnect connector B and measure the resistance between the terminals of the connectors.

Disconnect connector B and measure the resistance between the terminals of the connectors

Standard resistance (Fig. 3)

If the results match the examples above, an open circuit exists between terminal 1 of connector B2 and terminal 1 of connector C.

(c) Check the voltage.

Check the voltage
Check the voltage

(1) In a circuit in which voltage is applied to the ECU connector terminal, an open circuit can be checked by conducting a voltage check.

With each connector still connected, measure the voltage between the body ground and these terminals (in this order): 1) terminal 1 of connector A, 2) terminal 1 of connector B, and 3) terminal 1 of connector C.

Standard voltage (Fig. 4)

If the results match the examples above, an open circuit exists in the wire harness between terminal 1 of connector B and terminal 1 of connector C.

Basic inspection
(a) WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS (1) Unless otherwise stated, all resistance measurements should be made at an ambient temperature of 20°C (68°F). Resistance measurements may b ...

Check for short circuit
(a) If the wire harness is ground shorted (Fig. 5), locate the section by conducting a resistance check with the body ground (below).   (b) Check the resistance with the body ground. ...

Other materials:

Disassembly
1. REMOVE INDICATOR LIGHT WIRE SUB-ASSEMBLY (a) Remove the indicator light wire sub assembly from the position indicator light guide. 2. REMOVE POSITION INDICATOR LIGHT BULB (a) Remove the shift position indicator light bulb from the indicator light wire sub-assembly 3. REMOVE POSITION IND ...

Installation
1. INSTALL SEAT POSITION AIRBAG SENSOR  Check that the ignition switch is off.  Check that the negative battery (-) terminal is disconnected. CAUTION: After disconnecting the negative battery terminal, wait for at least 90 seconds before starting the operation.   ...

Rear Air Mix Damper Control Servo Motor Circuit
DESCRIPTION The rear air mix control servo motor (water valve servo motor) is controlled by the A/C amplifier. The rear air mix control servo motor moves the air mix damper by rotating (normal, reverse) with electrical power from the A/C amplifier. WIRING DIAGRAM INSPECTION PROCEDURE ...

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