Visual Inspection

Visual Inspection
This inspection will identify modifications or additions to the vehicle operating system that may affect diagnosis. Inspect the vehicle for non-Mazda factory add-on devices such as:
- Electronic add-on items:
^ air conditioning
^ generator (alternator)
^ engine turbo
^ cellular telephone
^ cruise control
^ CB radio
^ linear booster
^ backup alarm signal
^ computer
^ Vehicle modification:
These items, if not installed properly, affect the powertrain control module (PCM), or transmission function. Pay particular attention to add-on wiring splices in the PCM harness or transmission wiring harness, abnormal tire size, or axle ratio changes.
^ Leaks. See AUTOMATIC TRANSMISSION SPECIAL TESTING PROCEDURE. Automatic Transmission Special Testing
^ Proper linkage adjustments. See SHIFT CABLE AND BRACKET ADJUSTMENT.

Shift Linkage Check

Note:
^ Some vehicles equipped with automatic transmissions have wiring to the clutch pedal position (CPP) switch. If the CPP wiring harness and jumper plug are present, see SYMPTOM TROUBLESHOOTING CHART - AUTOMATIC TRANSMISSION EXTERNAL CONTROLS. Symptom Troubleshooting Chart - Automatic Transmission External Controls

Check for a misadjustment in shift linkage by matching the detents in the transmission range selector lever with those in the transmission. If they match, the misadjustment is in the indicator. Do not adjust the shift linkage. Hydraulic leakage at the manual control valve can cause delay in engagements and/or slipping while operating if the linkage is not correctly adjusted. See SHIFT CABLE AND BRACKET ADJUSTMENT for shift linkage adjustment.

Perform On-Board Diagnostics
After a road test, with the vehicle warm and before disconnecting any connectors, perform the Quick Test using IDS or equivalent tester. See ON-BOARD DIAGNOSTIC TESTS for diagnosis and testing of the powertrain control system.