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NO.7 NO CREEP AT ALL

BHE050301026W12

7 | No creep at all
DESCRIPTION | • Vehicle does not move in D range and R position when idling on flat paved road.
POSSIBLE CAUSE | • Clutch slippage (low clutch, low one-way clutch, low and reverse brake) – In the event of clutch slippage, a DTC (incorrect gear ratio) is output. • Insufficient engine output (low idle speed, inaccurate ignition timing, reduced compression). • Insufficient or improper ATF • Not within line pressure specification • Shift solenoid A or related circuit malfunction • Shift solenoid B or related circuit malfunction • Shift solenoid C or related circuit malfunction • Shift solenoid F or related circuit malfunction • Control valve spool malfunction • Shift solenoid A solenoid hydraulic circuit malfunction • Shift solenoid B solenoid hydraulic circuit malfunction • Shift solenoid C solenoid hydraulic circuit malfunction • Shift solenoid F solenoid hydraulic circuit malfunction • Improper ground of GND return circuit in AT – If there is improper ground of GND return circuit, clutch pressure may decrease, causing clutch slippage. • Torque converter malfunction (improper operation) Note • Before following the troubleshooting steps, make sure that the Automatic Transmission On-Board Diagnostic and Automatic Transmission Basic Inspection are conducted. (See BASIC INSPECTION.)

Diagnostic procedure

STEP | INSPECTION | ACTION
--- | --- | ---
1 | Does the vehicle creep in any range/position? | Yes | Go to the next step.
No | Inspect the selector lever and TR switch. (See SELECTOR LEVER COMPONENT INSPECTION.) (See TRANSMISSION RANGE (TR) SWITCH INSPECTION.)
2 | Disconnect the TCM connector. Is the resistance between terminal 2U at the TCM connector and terminal J at the solenoid valve wiring harness-side connector 5.0 ohms or less? | Yes | Go to the next step.
No | Repair open circuit.
3 | Disconnect the TCM connector. Is the resistance between ground terminal 2M or 2Q at the TCM connector and body ground 5.0 ohms or less? | Yes | Go to the next step.
No | Repair open ground circuit.
4 | Inspect shift solenoid A, B, C, F and pressure control solenoid circuits. (See SOLENOID VALVE INSPECTION.) Are they normal? | Yes | Go to the next step.
No | Repair or replace any malfunctioning parts.
5 | Remove the torque converter. Inspect the torque converter. (See AUTOMATIC TRANSMISSION REMOVAL/INSTALLATION.) (See AT workshop Manual.) Is the torque converter normal? | Yes | Overhaul the control valve body and repair or replace any malfunctioning parts. (See AT Workshop Manual.) If the problem remains, overhaul the transmission and repair or replace any malfunctioning parts. (See AT Workshop Manual.)
No | Replace the torque converter. (See AUTOMATIC TRANSMISSION REMOVAL/INSTALLATION.)
6 | Verify the test results. • If normal, return to the diagnostic index to service any additional symptoms. • If the malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis. – If the vehicle is repaired, troubleshooting completed. – If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM. (See TCM REMOVAL/INSTALLATION.)