Toyota Tacoma 2015-2018 Service Manual: Lost Communication With ECM/PCM "A" Missing Message (U010087)
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):
|
ECM |
U0100 |
CAUTION / NOTICE / HINT
HINT:
After the repair, clear the DTCs and perform the following procedure to check that DTCs are not output.
- Check that the battery voltage is 9.5 V or more.
- Turn the ignition switch to ON.
- Check for DTCs again (See page
.gif)
).
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 | .gif) |
REPLACE ECM |
| B | |
GO TO DTC CHART |
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Manual Transmission System
DTC Code
Detection Item
MIL
Memory
See page
P03352A
Cranks ...
Crankshaft Position Sensor "A" Signal Stuck in Range (P03352A,P033531)
DESCRIPTION
The crankshaft position sensor system consists of a crankshaft position sensor
plate and a pickup coil. The crankshaft position sensor plate has 34 teeth and is
installed to the crank ...
Other materials:
Disassembly
DISASSEMBLY
PROCEDURE
1. REMOVE FRONT OIL PUMP BODY O-RING
(a) Remove the front oil pump body O-ring from the oil pump assembly.
2. SECURE OIL PUMP ASSEMBLY
(a) Place the oil pump assembly on the torque converter assembly.
...
Correct driving posture
Drive in a good posture as follows:
Sit upright and well back in the
seat.
Adjust the position of the seat
forward or backward to ensure the pedals can be reached and easily depressed to
the extent required.
Adjust the seatback so that the
controls are easily operable.
Adjust the t ...
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
The ECU stores trouble codes when malfunctions occur.
The diagnostic system allows for reading of the trouble codes from the DLC3.
Use the Techstream to help diagnose and repair the problem.
2. CHECK DLC3
(a) Check the DLC3 (See page ).
3. INSPECT BATTERY VOLT ...