TEST OPTIONS            Visual Check     REASON FOR QUESTION     3. YES NO             KNOWN INFO              Does VOLTS gage operate correctly? If VOLTS gage does not operate, wire 3020 from connector PX8 pin 1 to connector PX10 pin 1 is faulty. Water temperature gage operates correctly. Main code 13, 22, or 25 not active in pushbutton shift selector.        POSSIBLE PROBLEMS        Faulty dashboard cable assembly. Faulty WTEC II VIM. Faulty WTEC II cab transmission harness. Faulty CTIS cable assembly. Faulty CTIS ECU. Faulty speedometer. e12. SPEEDOMETER DOES NOT OPERATE OR IS INACCURATE (CONT) 4. Is vehicle equipped with WTEC II transmission controls?             KNOWN INFO                         TEST OPTIONS            Visual Inspection     REASON FOR QUESTION     This question eliminates possible problems and determines where troubleshooting continues. Water temperature gage operates correctly. Main code 13, 22, or 25 not active in pushbutton shift selector. VOLTS gage operates correctly.        POSSIBLE PROBLEMS        Faulty dashboard cable assembly. Faulty WTEC II VIM. Faulty WTEC II cab transmission harness. Faulty CTIS cable assembly. Faulty CTIS ECU. Faulty speedometer. NO Go to step 12 of this fault. YES Repair wire 3020 from connector PX8 pin 1 to connector PX10 pin 1 (para 2-40) or replace WTEC II dashboard cable assembly (para 7-10) or WTEC III dashboard cable assembly (para 7-11). TM 9-2320-365-20-1 2-336          Change 1