Turn the ignition switch to "OFF". | ||
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Disconnect the MAP sensor 3P black connector. Check for loose or poor contact on the MAP sensor connector.![]() | ||
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Connect the MAP sensor 3P black connector. Place the motorcycle on its side stand. Start the engine and check that the MIL blinks. | Does not blink → | Loose or poor contact on the MAP sensor connector. |
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1 blink | ||
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Turn the ignition switch to "OFF". | ||
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Disconnect the MAP sensor 3P black connector. Turn the ignition switch to "ON". Measure the voltage at the wire harness side connector. ![]() Connection: Yellow/red (+) - Ground (-) Standard: 4.75-5.25 V | Out of range → | Open or short circuit in Yellow/red wire. Loose or poor contact on the ECM connectors. |
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Voltage exists | ||
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Measure the voltage between the connector terminals of the wire harness side.![]() Connection: Yellow/red (+) - Green/orange (-) Standard: 4.75 - 5.25 V | Out of range → | Open or short circuit in Yellow/red wire. Loose or poor contact on the ECM connectors. |
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Voltage exists | ||
↓ | ||
↓ | ||
Measure the voltage between the terminals of the wire harness side.![]() Standard: 4.75-5.25 V | Out of range → | Open or short circuit in Light green/yellow wire. Loose or poor contact on the ECM connectors. |
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Voltage exists | ||
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Turn the ignition switch to "OFF". Connect the MAP sensor 3P black connector. ![]() | ||
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Disconnect the ECM connectors. Connect the test harness to ECM connectors. Turn the ignition switch to "ON". ![]() | ||
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Measure the voltage at the test harness terminals (page 5-9).![]() Connection: B7 (+) - B1 (-) Standard: 2.7 - 3.1 V (760 mm Hg/1,013 kPa) | Out of range → | Faulty MAP sensor. |
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Voltage exists | ||
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Replace the ECM with a new one, and inspect it again. |