NO.21 NO ENGINE BRAKING IN 1GR POSITION OF MANUAL 1 RANGE [5R55S]

id0503c1814000

21

No engine braking in 1GR position of manual 1 range

DESCRIPTION

•  Engine speed drops to idle but vehicle coasts when accelerator pedal is released when in 1GR of manual 1 range at low vehicle speed.

POSSIBLE CAUSE

1.  Clutch slippage, burned

•  Line pressure low

•  Incorrect fluid level

•  Pressure control solenoid A and B malfunction

•  Shift solenoid A malfunction

•  Shift solenoid C malfunction

•  Shift solenoid D malfunction

•  Control valve body malfunction

•  Reverse servo malfunction

•  Reverse band malfunction

•  Body ground malfunction

2.  Signal malfunction

•  Accelerator pedal position sensor malfunction

•  Sensor ground malfunction

Note

•  Before the following the troubleshooting steps, make sure that the Automatic Transmission On-Board Diagnostic and Automatic Transmission Basic Inspections are conducted.
(See BASIC INSPECTION [5R55S].)

Diagnostic procedure

STEP	INSPECTION		ACTION
1	• Do the following symptoms concurrently occur? ― Engine flares up or slips during acceleration. ― Engine flares up or slips when shifting.	Yes	Go to symptom troubleshooting NO.14 “ENGINE FLARES UP OR SLIPS WHEN UPSHIFTING OR DOWNSHIFTING” or NO.15 “ENGINE FLARES UP OR SLIPS WHEN ACCELERATING VEHICLE”.
1		No	Repeat the basic inspection and repair or replace any malfunctioning parts according to the inspection result. (See BASIC INSPECTION [5R55S].)
2	• Verify test results. ― If normal, return to the diagnostic index to service any additional symptoms. ― If the malfunction remains, inspect the related Service Information and perform repair or diagnosis. • If the vehicle repaired, the troubleshooting is completed. • If the vehicle the not repaired or additional diagnostic information is not available, replace the TCM.