DTC 11-02; DTC 12-01: Control Unit & Motor Power Supply Voltage
NOTE:
- Before you troubleshoot, review the general troubleshooting information .
- If you turn the vehicle to the ON mode, and the engine is started, this DTC can be stored when any of these occur:
-
-
Quick-charging the battery.
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High voltage battery (24 V) is connected to the vehicle.
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Dead battery is connected to the vehicle.
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| DTC Description | DTC | Freeze Frame |
|---|---|---|
| 11-02 Control Unit Power Supply Voltage | ||
| 12-01 Motor Power Supply Voltage |
- 1. EPS system check:
1. Start the engine.
2. Check the parameter(s) below with the HDS.
Signal Current conditions Values Unit BATTERY IG1 VOLTAGE Is there battery voltage?
YES
Intermittent failure, the system is OK at this time. If the freeze data/on-board snapshot of this DTC is recorded, try to reproduce the failure under the same conditions with the Freeze data/on-board snapshot.
NO
Check the 12 volt battery and the PGM-FI DTCs - Refer to: How to Troubleshoot the Fuel and Emissions SystemsHow to Troubleshoot the CVT System(CVT System) . If they are OK, go to step 2.
- 2. IG1 ABS/VSA line check:
1. Turn the vehicle to the OFF (LOCK) mode.
2. Check for a poor connection at all IG1 ABS/VSA line connections between the EPS control unit connector A (11P) terminal No. 11 and the under-dash fuse/relay box No. B24 (7.5 A) fuse.
Are the connections OK?
YES
Go to step 3.
NO
Repair the IG1 ABS/VSA wire.
- 3. +B EPS line check:
1. Check for a poor connection at all +B EPS line connections between the EPS control unit connector A (11P) terminal No. 2 and the under-hood fuse/relay box No. A1-1 (70 A) fuse.
Are the connections OK?
YES
Go to step 4.
NO
Repair the +B EPS wire.
- 4. EPS control unit check (update):
1. Update the EPS control unit if it does not have the latest software.
2. Turn the vehicle to the OFF (LOCK) mode, then start the engine.
3. Check the parameter(s) below with the HDS.
Signal Current conditions Values Unit BATTERY IG1 VOLTAGE Is there battery voltage?
YES
Troubleshooting is complete.
NO