Check Heater Contactor 2

1. Check 1HTCON2 a. Inspect contactor coil and connectors. Verify there is no damage to coil, and no damage, moisture, or corrosion in connector. b. Check contactor coil resistance. Refer to Section 2.11 for contactor coil resistance values. Cannot be opened (infinite ohms), shorted (Zero Ohms) or shorted to ground. 2. Check 1HTCON2 Using Component Test Mode a. Use Component Test mode to energize 1HTCON2. (Refer to Section 5.2.4.) Verify Current Draw on Component Test mode Screen. Refer to Section 2.11 for correct electrical values. b. Check coil voltage between A1 and A2. Verify 12 VDC between A1 and A2. c. Check resistance at contacts. Verify contacts are closed at L1-T1, L2-T2, L3-T3. 3. Check 1HTCON2 Wiring - Inspect harness and control box connector pins and terminals CCB-3 to 1HTCON2-A1 and 1HTCON1-A2 to ground. (See wiring schematic Section 10.2) Verify there is no physical damage to harness, and no damage, moisture, or corrosion in connectors. 4. Check CCB status indicator - Refer to Section 2.5.4. 05028 PM Fuse 2 Alarm • Trigger-on Condition: TPC Reports Fuse Status Bad AND SIO Comm Fail Alarm 25800 is active for 15 seconds. • Control Response: Alarm condition only. • Trigger-off Condition: Activate conditions not true for two seconds. NOTE Follow the steps below as necessary until a problem is found. Once a repair or correction has been made, the active alarm should clear itself (refer to reset condition above). Operate the unit through the appropriate modes to see if any active alarm occurs. Check F2 in the PM 05029 PM Fuse 3/5/7 Alarm • Trigger-on Condition: TPC Reports Fuse Status Bad • Control Response: Alarm condition only. • Trigger-off Condition: Activate conditions not true for two seconds. NOTE Follow the steps below as necessary until a problem is found. Once a repair or correction has been made, the active alarm should clear itself (refer to reset condition above). Operate the unit through the appropriate modes to see if any active alarm occurs. Check F3, F5, and F7 in the PM 05031 PM Fuse 10 Alarm • Trigger-on Condition: TPC Reports Fuse Status Bad • Control Response: Alarm condition only. • Trigger-off Condition: Activate conditions not true for two seconds. NOTE Follow the steps below as necessary until a problem is found. Once a repair or correction has been made, the active alarm should clear itself (refer to reset condition above). Operate the unit through the appropriate modes to see if any active alarm occurs. Check F10 in the PM 05032 PM Fuse 11 Alarm • Trigger-on Condition: TPC Reports Fuse Status Bad • Control Response: Alarm condition only. • Trigger-off Condition: Activate conditions not true for two seconds. NOTE Follow the steps below as necessary until a problem is found. Once a repair or correction has been made, the active alarm should clear itself (refer to reset condition above). Operate the unit through the appropriate modes to see if any active alarm occurs. Check F11 in the PM