Diagnostic Aids

Transmission may exhibit symptoms of failing to shift and/or dropping into or remaining in 3rd gear when gearshift lever is in "OD" range. This condition may set additional DTCs P0740, P0753, P0785 and P1860. This may be caused by a poor terminal crimp on transmission solenoid battery feed circuit between instrument panel fuse block and transmission solenoids. Check terminal crimp at bulkhead connector where circuit passes through firewall.

Inspect wiring for poor connections at PCM. Check for bent, backed out, deformed or damaged terminals. Check for weak terminal tension. Check for chafed wires that could short to bare metal or other wiring. Check for broken wire inside insulation. If diagnosing for intermittent short or open condition, move wiring harness while observing scan tool for value changes.