LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Toyota >> 2017 >> Mirai >> Repair and Diagnosis (Single Page) >> Hybrid/Electric Powertrain >> Testing and Diagnosis >> Hybrid Control System - Diagnostic Codes (6 Of 6) & Circuit Tests >> Hybrid Control System >> DTC U0129-527: Lost Communication with Brake System Control Module; DTC U0129-528: Lost Communication with Brake System Control Module; DTC U0140-146: Lost Communication with Body Control Module; DTC U0151-763: Lost Communication with Airbag Control Module; DTC U0164-827: Lost Communication with HVAC Control Module; DTC U1107-436: Lost Communication with Power Management Module [06/2015 - ] >> Caution / Notice / Hint
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Caution / Notice / Hint

NOTE:

When the vehicle is parked with the power switch off, if the FC control ECU judges that the FC stack temperature will go below 0°C (32°F), it activates the FC air compressor, hydrogen pump and FC cooling water pump for a maximum of 180 seconds and drains water from the FC stack assembly. When performing inspection or repairs with the power switch off (not on (IG) or on (READY)), disconnect the cable from the negative (-) auxiliary battery terminal before performing work (If the auxiliary battery voltage is needed to conduct inspection, warm up the FC system beforehand).

HINT: 

After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.

  1. Turn the power switch on (IG) and wait for 2 minutes or more.
scientia non olet · About LEMON Manuals