Toyota Tacoma Quiz
Rc62f Manual Transmission / Transaxle

Lost Communication With ECM/PCM "A" Missing Message (U010087)

In this manual: Rc62f Manual Transmission / Transaxle
Introduction — 15Maintenance — 8Audio / Video — 94Garage Door Opener — 7Navigation / Multi Info Display — 84Park Assist / Monitoring — 86Brake — 50Brake Control / Dynamic Control Systems — 165Parking Brake — 52gr-fks Charging — 252gr-fks Cooling — 212gr-fks Emission Control — 132gr-fks Engine Control — 322gr-fks Engine Mechanical — 332gr-fks Exhaust — 92gr-fks Fuel — 422gr-fks Ignition — 62gr-fks Intake — 72gr-fks Lubrication — 152gr-fks Starting — 38Ac60e Automatic Transmission / Transaxle — 146Axle — 19Clutch — 20Cruise Control — 168Differential — 50Drive Shaft — 6Propeller Shaft — 23Rc62f Manual Transmission / Transaxle — 34Suspension — 22Tire And Wheel — 39Vf2cm Transfer — 44Can Communication — 45Multiplex Communication — 20Power Distribution — 5Power Steering — 29Steering Column — 29Air Conditioning — 108Door Lock — 88Engine Hood / Door — 16Engine Immobiliser — 47Exterior — 55Horn — 5Interior — 18Interior Panel — 8Lighting — 93Meter / Gauge / Display — 31Mirror — 22Other System — 24Pre-collision — 40Seat — 52Seat Belt — 40Sliding Roof — 26Supplemental Restraint Systems — 139Theft Deterrent — 20Window / Glass — 53Wiper / Washer — 24
6steps
~36min
2/5difficulty
Done 0 of 6
DESCRIPTION

The engine control unit and transmission control unit are located inside the ECM. The engine control unit intercommunicates with the transmission control ECU via CAN communication. If there is a problem in this intercommunication, the ECM stores this DTC.

DTC Code

DTC Detection Condition

Trouble Area

SAE

U010087

Following conditions are met for 1.25 seconds (1 trip detection logic):

  1. The ignition switch is ON
  2. Battery voltage is 9.5 V or more
  3. No communication between engine control unit and transmission control unit

ECM

U0100
CAUTION / NOTICE / HINT

HINT:

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

  1. Check that the battery voltage is 9.5 V or more.
  2. Turn the ignition switch to ON.
  3. Check for DTCs again (See page ).
PROCEDURE

  1. CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC U010087)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Enter the following menus: Powertrain / Transmission / Trouble Codes.

(d) Check if DTCs are output.

Result

Result

Proceed to

Only DTC U010087 is output

A

DTC U010087 and other DTCs are output

B
A

REPLACE ECM
B

GO TO DTC CHART

Test yourself

A quick Toyota Tacoma quiz: every answer comes with an explanation and a link to the manual page.