On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. REMOVE STARTER RELAY (ST) (a) Remove the engine room relay box cover. (b) Remove the starter relay from the engine room relay block. 2. INSPECT STARTER RELAY
3. INSTALL STARTER RELAY |
Toyota Tundra Service Manual > Meter / Gauge System: Lost Communication with ECM / PCM "A" (U0100)
DESCRIPTION The combination meter communicates with the ECM via the CAN line. DTC Code DTC Detection Condition Trouble Area U0100 When either of following conditions is detected: Vehicle speed 5 km/h (3 mph) or more and IG voltage 10.5 V or more No communication with ECM continues for 3 seconds or m ...