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DIAGNOSIS AND TESTING DIAGNOSIS AND TESTING - AUTOMATIC CAUTION: Before attempting any repair on the T scan tool and the 42RLE Transmission Diagnostic Proce- 42RLE automatic transmission malfunctions may be caused by these general conditions: • Poor engine performance • Improper adjustments • Hydraulic malfunctions • Mechanical malfunctions • Electronic malfunctions recording the complaint. The complaint should be • Temperature at occurrence (cold, hot, both) • Dynamic conditions (acceleration, deceleration, upshift, cornering) • Elements in use when condition occurs (what gear is transmission in during condition) • Road and weather conditions • Any other useful diagnostic information. sible variables: • Fluid level and condition • Shift cable adjustment • Diagnostic trouble code inspection lem has been corrected or that more diagnosis is nec- DIAGNOSIS AND TESTING - ROAD TEST Prior to performing a road test, verify that the fluid level, fluid condition, and linkage adjustment During the road test, the transmission should be operated in each position to check for slipping and If the vehicle operates properly at highway speeds, but has poor acceleration, the converter stator over- Slipping clutches can be isolated by comparing the “Elements in Use” chart with clutch operation A slipping clutch may also set a DTC and can be determined by operating the transmission in all 21 - 46 AUTOMATIC TRANSMISSION - 42RLE TJ AUTOMATIC TRANSMISSION - 42RLE (Continued) |