DTC Detection Logic
WARNING: This page is about a different car, the 2018 Nissan NV3500 HD and 2018 Nissan NV2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- TCM detects a high-RPM state of the under drive sun gear.
- The number of revolutions of the under drive sun gear is calculated with the input speed sensor 1 and 2.
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DTC |
CONSULT screen terms (Trouble diagnosis content) |
DTC detection condition |
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P0730 |
INCORRECT GR RATIO (Incorrect Gear Ratio) |
Diagnosis condition |
- |
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Signal |
- |
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Threshold |
The revolution of under drive sun gear is 8, 000 RPM or more.
NOTE:
Not detected when in "P" or "N" position and during a shift to "P" or "N" position.
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Diagnosis delay time |
- |
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