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Automatic Transmission External Controls: Diagnosis Mercury Montego III

Automatic Trans 5 illustrations ~109 words

Inspection and Verification

  1. Verify the customer concern by operating the system.
  2. Visually inspect for obvious signs of mechanical or electrical damage.
  3. If an obvious cause for an observed or reported concern is found, correct the cause before proceeding to the next step.
  4. If the concern is not visually evident, verify the symptom. GO to «SYMPTOM CHART»(ref-233016-S31278439712006052400000) . VISUAL INSPECTION Mechanical Electrical Transmission shift cable Manual control lever Transmission control module out of adjustment (6-speed transaxle) Fuse: C34 (30A) C18 (10A) Connections Wiring harness Brake pedal position (BPP) switch Shift lock actuator

Symptom Chart

ConditionPossible SourcesAction
Shift interlock system does not release/lock correctlyCircuitry open/shorted Fuse(s) Stoplight switchGO to PINPOINT TEST A .
Shift interlock system does not release/lock correctlyShift lock actuatorINSTALL a new shifter assembly. REFER to SELECTOR LEVER CABLE .
Shift control linkage is out of correct gear relationshipShift linkage out of adjustmentREFER to SELECTOR LEVER CABLE ADJUSTMENT .
Loose shift cable bracketCHECK the shift cable bracket. Tighten as necessary.

SYMPTOM

Scheme 143

Scheme 143: Floor Shifter Harness Connector C3245

Scheme 144

Scheme 144: Brake Pedal Position Switch

Scheme 145

Scheme 145: Ignition Switch C250

Scheme 146

Scheme 146: Smart Junction Box C2280a

Scheme 147

Scheme 147: Smart Junction Box C2280b