Toyota CH-R Service Manual: Fail-safe Chart

Toyota CH-R Service Manual / K114 Cvt / Continuously Variable Transaxle System / Fail-safe Chart

FAIL-SAFE CHART

Description

This function minimizes the loss of the Continuously Variable Transaxle (CVT) system functions when a malfunction occurs in a sensor or solenoid valve.

Fail-safe

(a) Fail-safe control list:

Malfunctioning Part	Function
Transmission revolution sensor (NT)	The oil pressure of the primary pulley and secondary pulley is set to a specified value. The opening angle of the throttle valve is limited to reduce input torque.
Transmission revolution sensor (NOUT)
Transmission revolution sensor (NIN)
Shift solenoid valve SL	The ECM stops sending current to the shift solenoid valve SL, and forward and reverse clutch control is performed mechanically. Lock-up clutch control is canceled.
Shift solenoid valve SC	The ECM stops sending current to the shift solenoid valve SC, and forward and reverse clutch control is performed mechanically. Lock-up clutch control is canceled.
Shift solenoid valve SLU	The ECM stops sending current to the shift solenoid valve SLU, and forward and reverse clutch control is performed mechanically. Lock-up clutch control is canceled.
Shift solenoid valve SLP	The gear ratio is limited to a specified range.
Shift solenoid valve SLS	The gear ratio is set to a specified value. The lock-up range is limited to a particular range.
CVT fluid temperature sensor	The ECM sets the fluid temperature to a predetermined value to perform normal control.

Check Mode Procedure

CHECK MODE PROCEDURE DESCRIPTION (a) Check mode has a higher sensitivity to malfunctions and can detect malfunctions that cannot be detected in normal mode. Check mode can also detect all the malf ...

Data List / Active Test

DATA LIST / ACTIVE TEST DATA LIST HINT: Using the Techstream to read the Data List allows the values or states of switches, sensors, actuators and other items to be read without removing any part ...

Other materials:

Toyota CH-R Service Manual > Navigation System: Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART Navigation System DTC No. Detection Item Link B1324 Lost Communication with Meter B153A GVIF Disconnected (from Extension Module to H/U) ...

Toyota CH-R Service Manual > Continuously Variable Transaxle System: Definition Of Terms
DEFINITION OF TERMS Term Definition Monitor description Description of what the ECM monitors and how it detects malfunctions (monitoring purpose and details). Related DTCs Group of diagnostic trouble codes that are ou ...

Toyota CH-R Service Manual: Fail-safe Chart

Check Mode Procedure

Data List / Active Test

Other materials:

Toyota CH-R Owners Manual

Toyota CH-R Service Manual