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.
^ Proper linkage adjustments.

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.

Perform On-Board Diagnostics
After a road test, with the vehicle warm and before disconnecting any connectors, perform the Quick Test using WDS or equivalent tester.