Components COMPONENTS ILLUSTRATION Installation INSTALLATION PROCEDURE 1. INSTALL GASKET (a) Clean the ECM seal's surface with non-residue solvent. (b) Attach a new gasket to the ECM. 2. INSTALL ECM
3. CONNECT CONNECTOR HOLDER BLOCK
(b) Install the connector holder block cover. 4. INSTALL AIR CLEANER ASSEMBLY
5. INSTALL V-BANK COVER SUB-ASSEMBLY
Removal REMOVAL PROCEDURE 1. REMOVE V-BANK COVER SUB-ASSEMBLY
2. REMOVE AIR CLEANER ASSEMBLY
3. DISCONNECT CONNECTOR HOLDER BLOCK (a) Remove the connector holder block cover.
4. REMOVE ECM
(b) Raise the 2 levers while pushing the locks on the 2 levers shown in the illustration. NOTICE: Make sure that the lock lever is raised 90° as shown in the illustration before disconnecting the connectors. Failure to do this may cause the connectors to break. (c) Disconnect the 2 connectors.
5. REMOVE GASKET
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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 ...