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1.Connect a needle-nosed wire probe to a voltmeter probe.
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2.Insert the needle-nosed wire probe into each of the AS&G-ECU connector terminals from the wire side, and measure the voltage while referring to the check chart.
| note |
- Make the voltage measurement with the AS&G-ECU connector connected.
- You may find it convenient to pull out the AS&G-ECU to make it easier to reach the connector terminals.
- The chart procedures do not have the particular order.
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| caution |
Short-circuiting the positive (+) probe between a connector terminal and earth could damage the vehicle wiring, the sensor, AS&G-ECU or all of them. Be careful to prevent this!
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3.If voltmeter shows any division from standard value, check the corresponding sensor, actuator and related electrical wiring, then repair or replace.
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4.After repair or replacement, recheck with the voltmeter to confirm that the repair has corrected the problem.
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Terminal No.
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Inspection item
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Check condition (Engine condition)
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Normal condition
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4
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DC/DC converter (powertrain) diagnostic signal
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Ignition switch: ON
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0.8 V or less
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6
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Brake hold signal
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Engine: Idle operation
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System voltage
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Change vehicle status to auto stop status*1
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1 V or less
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10
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DC/DC converter (powertrain) control signal
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Ignition switch: ON
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1 V or less
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Change vehicle status to auto stop status*1
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Brake pedal: Depressed (this allows the engine to achieve the auto start status)
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At auto start, voltage increases for a second.
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11
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DC/DC converter control signal
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Ignition switch: ON
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1 V or less
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Change vehicle status to auto stop status*1
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Brake pedal: Depressed (this allows the engine to achieve the auto start status)
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At auto start, voltage increases for a second.
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13
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Power supply
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Ignition switch: ON
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System voltage
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17
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DC/DC converter diagnostic signal
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Ignition switch: ON
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0.8 V or less
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23
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Starter relay
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Ignition switch: ON
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1 V or less
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Engine: Cranking
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System voltage
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25
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Starter relay (auto start)
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Ignition switch: ON
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1 V or less
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Change vehicle status to auto stop status*1
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Brake pedal: Depressed (this allows the engine to achieve the auto start status)
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The system voltage while the engine is cranking.
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27
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AS&G OFF switch
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Ignition switch: ON
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AS&G OFF switch: Pressed
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System voltage (only while the switch is pressed)
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AS&G OFF switch: Released
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1 V or less
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30
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Ignition switch-IG
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Ignition switch: ON
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System voltage
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31
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Ignition switch-ST
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Ignition switch: ON
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1 V or less
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Ignition switch: ST
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System voltage
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1.Turn the ignition switch to "LOCK" (OFF) position.
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2.Disconnect the AS&G-ECU connector.
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3.Measure the resistance and check for continuity between the terminals of the AS&G-ECU harness-side connector while referring to the check chart.
| note |
When measuring resistance and checking continuity, a harness for checking contact pin pressure should be used instead of inserting a test probe.
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| caution |
If the terminals that should be checked are mistaken, or if connector terminals are not correctly shorted to earth, damage may be caused to the vehicle wiring, sensors, AS&G-ECU and/or ohmmeter.
Be careful to prevent this!
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4.If the ohmmeter shows any deviation from the standard value, check the corresponding sensor, actuator and related electrical wiring, and the repair or replace.
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5.After repair or replacement, recheck with the ohmmeter to confirm that the repair or replacement has corrected the problem.
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