#
NO.9 NO SHIFTING

BHE050301026W14

9 | No shifting
DESCRIPTION | • Single shift range only. • Sometimes shifts correctly.
POSSIBLE CAUSE | • Clutch slippage (low clutch, high clutch) – In the event of clutch slippage, a DTC (incorrect gear ratio) is output. • Reduced line pressure • Transmission fixed in 3GR (operating fail-safe function) – Input/output signal malfunction (VSS, turbine sensor, shift solenoids A, B, C and F, oil pressure switches B, C and F) • Maximum speed is low or acceleration is poor because transmission is fixed in 3GR as a fail-safe. In such a case, DTC is stored. – Improper TCM ground. • Transmission is mechanically fixed in 3GR if TCM stops operating due to Improper TCM ground. In such a case, DTC is not stored. • Transmission fixed in 1GR or 2GR – If VSS and turbine sensor malfunction simultaneously, transmission is fixed in 2GR while D range or 1GR, 2GR of M range. In such a case, DTC is not stored. • Incorrect characteristics of accelerator position sensor, accelerator position signal, TP sensor, or throttle opening angle signal (CAN communication) – Accelerator position sensor, accelerator position signal, TP sensor and throttle opening angle signal (CAN communication) do not change in proportion to throttle opening angle. In such a case, high or low gear is fixed, resulting in low maximum speed and poor acceleration. (Refer to improper accelerator position sensor, accelerator position signal, TP sensor, or throttle opening angle signal (CAN communication) in "No.11 Abnormal shifting".) • Control valve body malfunction (improper operation, stuck, clogged oil passage). – Hydraulic circuit clogging (Shift solenoids B, C and F). – Control valve spool malfunctions • Improper adjustment of TR switch • Torque converter malfunction (TCC piston is cracking or peeling.) 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 | With the ignition switch at the ON position, does the gear position indicator light indication correspond to the selector lever position? | Yes | Go to the next step.
No | Go to No.29 "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". (See SELECTOR LEVER COMPONENT INSPECTION.)
2 | Disconnect the solenoid valve connector. Does the vehicle operate as follows? D range: 3GR (fixed) R position: Reverse | Yes | Go to the next step.
No | 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.)
3 | Drive the vehicle in D range. Does the vehicle start from stop in the first gear? | Yes | Go to the next step.
No | Inspect the following values. (See PCM INSPECTION.) (See TCM INSPECTION.) PCM PIDs (using WDS or equivalent): • APP1 • APP2 • TP_REL • VSS TCM terminal voltage: • 2G (turbine sensor) • 1D (TR switch, P position) • 2B (TR switch, N position) • 2C (TR switch, R position) • 2E (TR switch, D range) • 2K (VSS) Repair or replace any malfunctioning parts.
4 | Disconnect the TCM connector. Is the resistance between terminal 2U at the TCM connector and terminal J at solenoid valve wiring harness-side connector 5.0 ohms or less? | Yes | Go to the next step.
No | Repair open circuit.
5 | 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.
6 | Stop the engine. Disconnect the solenoid valve connector. Measure the resistance between the following solenoid valve connector terminals. (See SOLENOID VALVE INSPECTION.) • Terminals E-J (shift solenoid A) • Terminals F-J (shift solenoid B) • Terminals H-J (shift solenoid C) • Terminals I-J (shift solenoid F) • Terminals G-J (TCC solenoid) Are the resistances normal? | Yes | Go to the next step.
No | Inspect for open circuit in the malfunctioning solenoid related wiring harnesses. • If the wiring harnesses are okay, inspect if the solenoids are stuck mechanically.
7 | Inspect for continuity between the following solenoid valve connector terminals. (See OIL PRESSURE SWITCH INSPECTION (AT).) • Terminals B-J (oil pressure switch B) • Terminals A-J (oil pressure switch C) • Terminals L-J (oil pressure switch F) Are the continuity normal? | Yes | Go to the next step.
No | Inspect for open circuit in the malfunctioning pressure switch related wiring harnesses. • If the wiring harnesses are okay, inspect if the pressure switch are stuck mechanically.
8 | 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.)
9 | 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.)