NO.8 DOES NOT SHIFT TO FOURTH GEAR (4GR) (GENERAL (L.H.D.) SPECS. SPORT AT) [FN4A-EL]


8	Does not shift to fourth gear (4GR)
DESCRIPTION	• Vehicle does not upshift from 3GR to 4GR even though vehicle speed is increased. • Vehicle does not shift to 4GR even though accelerator pedal is released in D range at 60 km/h {37 mph}.
POSSIBLE CAUSE	• Basically, TCC does not operate when fail-safe is operating. Verify the DTCs first. If the TCC operates when driving at high speeds only, malfunction (improper adjustment) is in the M range switch circuit or TR switch circuit. Caution • If the TCC is stuck, inspect it. In addition, inspect the oil cooler for foreign particles which may have mixed in with the ATF. 1. TCC piston slipped, burned • Line pressure low • TP sensor malfunction • Engine coolant temperature sensor malfunction • Vehicle speed sensor malfunction • Input/turbine speed sensor malfunction • Sensor GND malfunction 2. Transaxle fluid temperature sensor malfunction • Short or open circuit in wiring • Poor connection of connector • Sensor malfunction 3. TR switch malfunction • Short or open circuit in wiring • Poor connection of connector • Sensor malfunction • Selector lever adjustment incorrect • TR switch adjustment incorrect 4. Shift solenoid A, shift solenoid B, shift solenoid D valve malfunction • Short or open circuit in wiring • Poor connection of connector • Solenoid valve stuck 5. M range switch malfunction 6. Control valve body malfunction Note • Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See BASIC INSPECTION (GENERAL (L.H.D.) SPECS. SPORT AT) [FN4A-EL].)


STEP	INSPECTION		ACTION
1	With ignition switch at ON, does gear position indicator light indication correspond to selector lever position?	Yes	Go to next step.
1		No	Go to No.27 "GEAR POSITION INDICATOR LIGHT DOES NOT ILLUMINATE IN M RANGE", or No. 30 "GEAR POSITION INDICATOR LIGHT ILLUMINATES IN D RANGE OR P, N, R POSITIONS."
2	Inspect voltage at the following. • TCM terminal 2M (TFT sensor) (See TCM INSPECTION (GENERAL (L.H.D.) SPECS. SPORT AT) [FN4A-EL].) Is voltage okay?	Yes	Go to next step.
2		No	Repair or replace any defective parts.
3	Inspect shift solenoid A, B or D. Are they okay?	Yes	Inspect for shift solenoid mechanical stuck. If shift solenoids okay, inspect for open or short circuit between TCM connector terminals 1A, 1B, 1F and control valve body terminals A, C or B.
3	Inspect shift solenoid A, B or D. Are they okay?	No	Go to next step.
4	Disconnect TCM. Is resistance between ground terminal 1P or 1O at TCM connector and body ground less than 5.0 ohms?	Yes	Check the value at the following. PCM PID (using WDS or equivalent): • VSS Repair or replace any defective parts.
4		No	Repair open ground circuit. Reconnect TCM.
5	• Verify test results. - If okay, return to diagnostic index to service any additional symptoms. - If malfunction remains, inspect related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. • If vehicle repaired, troubleshooting completed. • If vehicle not repaired or additional diagnostic information not available, replace TCM.