TM 10-3930-675-20-1 0009 00-3 COOLING FAN OPERATION AND FAN CONTROL TROUBLESHOOTING - CONTINUED 0009 00 Table 2. Error Code 167 - Cooling Fan Speed, Short Circuit Failure Troubleshooting Procedures. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error  Code  167  -  Cooling  Fan  Speed,  Short Circuit Failure 1.  Disconnect connector 6037 at fan  control  valve.  Error  code 166 will be displayed. 2.  Turn   ignition  switch  to  ON position  and  perform  voltage check. If 20-25V are present at connector 6037,  replace  fan  control  valve (WP 0174 00). 3.  Disconnect ECU (790) connector 2 and check continuity  between  connector pin 13 and connector X158 pin 10. a. If no continuity between pins, repair    or    replace    connector (WP 0111 00). b. If continuity is present, notify SRA. 4.  Disconnect   connector   X158 and check continuity between connector 6037 pin 1 and pin 2 and between pin 1 and chassis and pin 2 and chassis. a. If continuity is present, repair or replace connectors (WP 0111 00). b. If    wiring    harness    must    be replaced, notify SRA. 5.  Disconnect ECU (790) connector 2 and check continuity  between  connector 6037   pin   1   and   pin   2   and between connector 6037 pin 1 and   chassis   and   pin   2   and chassis. If   continuity   is   present,   notify SRA. 6.  Enter “DIAG SERVO 11(13)” menu   and   check   current   of FAN OUTPUT. Current should be present. a. If current is not present, replace ECU (790) (WP 0079 00). b.If   current   is   present,   notify SRA. Table 3. Error Code 426 - Fording Level Switch, Input Read Incorrect Troubleshooting Procedures. MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION Error  Code  426  -  Fording  Level  Switch,  Input Read Incorrect 1.  Enter “DIAG EXTRA FUNCT”   4   (13)   menu   and check     water     level     sensor setting. Enter “0” shut off and “1” to run cooling pump. Check if fording water level sensor is clogged or damaged. Clean    and/or    replace    fording water level sensor (WP 0090 00). 2.  Check continuity between connector   X195   pin   12   and connector X198 pin 8. a. If  no  continuity  between  pins, repair   or   replace   connectors (WP 0111 00). b. If continuity (short) to chassis, repair   or   replace   connectors (WP 0111 00). c. If   problem   continues,   notify SRA. DIAG SERVO 11(13)         OUTPUT/INPUT FAN        0mA    0mA BL.VALVE 0.00V    0mA