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:
Front Differential Oil Temperature Sensor Circuit Low (P17C7)
DESCRIPTION
This DTC is output when a short to ground in the oil temperature sensor is detected.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
P17C7
Front Differential Oil Temperature Sensor Circuit Low
...
Pressure Control Solenoid "C" Performance (Shift Solenoid Valve SL3) (P0796)
SYSTEM DESCRIPTION
The ECM uses the vehicle speed signal and signals from the transmission revolution
sensors (NT, SP2) to detect the actual gear (1st, 2nd, 3rd, 4th, 5th or 6th gear).
The ECM compares the actual gear with the shift schedule in the ECM memory to
detect mechanical problems of t ...
Turn Signal Switch Circuit
DESCRIPTION
The combination meter assembly receives the turn signal switch information and
controls the turn signal lights.
WIRING DIAGRAM
PROCEDURE
1.
READ VALUE USING TECHSTREAM (TURN SIGNAL SWITCH)
(a) Connect the Techstream to the DLC3.
(b) Turn the igni ...
