| 237 - ROUTINE |
| Powertrain Control System |
- CARRY OUT On-Board Diagnostic (OBD) tests. REFER to the
INTRODUCTION
article for diagnosis and testing of the PCM. For diagnosing SSPCB
, SSPCC
and TCC
solenoid, GO to PINPOINT TEST A . For diagnosing TFT
sensor, GO to PINPOINT TEST B . For diagnosing TSS
/intermediate shaft speed and OSS
sensor, GO to PINPOINT TEST D . REPAIR as necessary. CLEAR the DTCs, ROAD TEST the vehicle and RERUN the OBD
test.
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- PCM, vehicle wiring harnesses, transmission internal harness, Shift Solenoid Pressure Control B (SSPCB), Shift Solenoid Pressure Control C (SSPCC), Torque Converter Clutch (TCC) solenoid, Turbine Shaft Speed (TSS)/intermediate shaft speed sensor, Output Shaft Speed (OSS) sensor, Transmission Fluid Temperature (TFT) sensor
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| Transmission Fluid |
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- CHECK transmission fluid level and adjust as necessary. REFER to PRELIMINARY INSPECTION in this service information.
- CARRY OUT the Transmission Fluid Condition Check. REFER to PRELIMINARY INSPECTION in this service information.
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| Incorrect Line Pressures |
- CHECK pressure at line tap. CARRY OUT Line Pressure Test. REFER to SPECIAL TESTING PROCEDURES in this service information. FOLLOW the pressure diagnosis test as required.
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| Solenoid Body Assembly |
- Bolts not tightened to specification
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- TIGHTEN to specification.
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- INSTALL a new filter gasket.
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- DISASSEMBLE and CLEAN.
- If damaged or parts are missing, INSTALL a new solenoid body assembly. If misassembled, reassemble correctly.
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- SSPCB
, SSPCC
, TCC
solenoid(s) damaged, stuck or bore damaged; manual valve damaged, stuck or bore damaged
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| Overdrive Clutch Assembly |
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- Filtered orifice damaged, missing, not seating, off location
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- INSPECT for mislocation, poor seating, damage. INSTALL a new drum.
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- Friction elements damaged or worn
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- REPAIR as necessary.
- REPAIR as necessary.
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- Snap ring for One-Way Clutch (OWC) and/or return spring not seated or damaged
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| Intermediate Clutch Assembly |
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- Filtered orifice damaged, missing, not seating, off location
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- INSPECT for mislocation, poor seating, damage. INSTALL a new pump if damaged.
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- Friction elements damaged or worn
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- REPAIR as necessary.
- REPAIR as necessary.
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- Snap ring for OWC
and/or return spring not seated or damaged
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