Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
CONSULT-II Inspection Procedure
For the unified meter and A/C amp, the signal line (CAN "H", CAN "L" and fuel level sensor) required for controlling the combination meter are integrated in the A/C auto amp. Unified meter and A/C amp controls each operation for A/C auto amp. For information regarding A/C control, see appropriate diagnosis article in HEATING & AIR CONDITIONING. Unified meter and A/C amp inputs necessary information for combination meter from each unit by CAN communication. And unified meter and A/C amp outputs these signals using communication line (TX, RX) between unified meter and A/C amp and combination meter. The signals required for the Distance To Empty (DTE) display are centralized in the unified meter and A/C amp, converted into data, and sent to the display unit (without NAVI) display control unit (with NAVI) using CAN communication. Other input signals are also sent to the ECM, TCM, AWD control unit, BCM, display unit (without NAVI) and display control unit (with NAVI) using CAN communication. The unified meter and A/C amp have a CONSULT-II function (self-diagnostic results, data monitor).
- Turn ignition switch to OFF position.
- Connect CONSULT-II and CONSULT-II CONVERTER to the Data Link Connector (DLC), located under left side of dash panel, near the hood opener handle. See Figure.
- Turn ignition switch to RUN position.
- Press START (NISSAN BASED VHCL).
- Press ENGINE. If ENGINE is not indicated, diagnose CONSULT-II access problem. See CONSULT-II DATA LINK CONNECTOR CIRCUIT table.
- Perform each diagnostic test mode according to each service procedure. For more information, refer to CONSULT-II operation manual.
| Symptom | Check Item | ||
|---|---|---|---|
| Consult-II Cannot Access Any System. | CONSULT-II DLC Power Supply Circuit (Terminal 8) & Ground Circuit (Terminal 4). | ||
| ..... | CONSULT-II DLC Cable & CONSULT-II CONVERTER. | ||
| CONSULT-II Cannot Access Individual System. (Other Systems Can Be Accessed.) | CONSULT-II Program Card (Check The Appropriate CONSULT-II Program Card (Checking Equipment) For The System. | ||
| ..... | Power Supply & Ground Circuit For The Control Unit Of The System. | ||
| ..... | Open Or Short Between The System & CONSULT-II DLC. | ||
| ..... | Open Or Short Circuit CAN Communication Line. | ||
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.