toyota Workshop Repair Guides

Toyota Workshop Service and Repair Manuals

Initial Inspection and Diagnostic Overview|Page 2235 > < Initial Inspection and Diagnostic Overview|Page 2233
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Idle Up Control Valve: Component Tests and General Diagnostics

INSPECTION

1. Disconnect Negative (-) Terminal Cable From Battery

CAUTION:  Work must be started after 90 seconds from the time the ignition switch is turned to the LOCK position and the negative (-) terminal
cable is disconnected from the battery.

2. Remove Air Conditioning Idle-Up Valve.

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Disconnect the idle-up valve connector.

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Disconnect the 2 air hoses.

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Remove the 2 bolts and idle-up valve.

3. Inspect Idle-Up Valve for open circuit. Using an ohmmeter, check that there is continuity between the terminals.

Resistance;  30 - 33 Ohms at 20°C (68°F)

If there is no continuity. replace the Idle-Up Valve.

4. Inspect Air Conditioning Idle-Up Valve for ground. Using an ohmmeter, check that there is NO continuity between each terminal and the body.

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If there IS continuity, replace the Idle-Up Valve.

Initial Inspection and Diagnostic Overview|Page 2235 > < Initial Inspection and Diagnostic Overview|Page 2233