Tacoma

Toyota Tacoma 2015-2018 Brake Workshop Manual

Last Modified: 11-13-2015 6.6 C Doc ID: RM000000YUO0TTX
Model Year Start: 2016 Model: Tacoma Prod Date Range: [08/2015 - ]
Title: BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for Hydraulic Brake Booster): C1437; Lost
Communication with ECM; 2016 MY Tacoma [08/2015 - ]
DTC C1437 Lost Communication with ECM
DESCRIPTION
The skid control ECU (master cylinder solenoid) receives signals from the ECM via the CAN communication
system.
DTC
CODE
DTC DETECTION CONDITION TROUBLE AREA
C1437
When the IG1 terminal voltage is 10 V or higher and the vehicle
speed is 15 km/h (9 mph) or more, data cannot be sent from the
ECM for 2 seconds or more.
Engine control system
CAN communication
system
Skid control ECU (master
cylinder solenoid)
INSPECTION PROCEDURE
NOTICE:
When replacing the skid control ECU (master cylinder solenoid), perform calibration .
PROCEDURE
1. CHECK HARNESS AND CONNECTOR (MOMENTARY INTERRUPTION)
(a) Using the Techstream, check for any momentary interruption in the wire harness and connector
corresponding to the DTC .
ABS/VSC/TRAC
TESTER DISPLAY MEASUREMENT ITEM/RANGE NORMAL
CONDITION
DIAGNOSTIC
NOTE
EFI Communication
Open
EFI communication open detection/ Error or
Normal
Normal -
OK:
Normal (there are no momentary interruptions).
HINT:
P
erform the above inspection before removing the sensor and connector.
NG
GO TO STEP 3
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