|
|
Content .. 1518 1519 1520 1521 ..
C1401-TRANSFER CASE RANGE SELECT SWITCH CIRCUIT LOW (CONTINUED) For a complete wiring diagram Refer to Section 8W • When Monitored: • Set Condition: Possible Causes INTERMITTENT TRANSFER CASE RANGE SELECT SWITCH CIRCUIT LOW (K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT SHORTED TO GROUND (K504) DRIVETRAIN 5 VOLT SUPPLY CIRCUIT SHORTED OPEN (K977) MODE SELECT CIRCUIT SHORTED TO GROUND (K977) MODE SELECT CIRCUIT SHORT OPEN TRANSFER CASE SELECTOR SWITCH FINAL DRIVE CONTROL MODULE Diagnostic Test 1. 4WD RANGE SWITCH VOLTAGE LESS THAN 0.2 VOLTS Ignition on, engine not running. NOTE: Repair any system undervoltage or overvoltage DTCs that are set in this module before proceeding. Is the voltage less than 0.2 volts? Yes >> Go To 2 No >> Go To 9 2. TRANSFER CASE SELECTOR SWITCH Turn the ignition off. Disconnect the Transfer Case Selector Switch connector. Connect a jumper wire between the (K504) Drivetrain 5 Volt Supply Ignition on, engine not running. With the scan tool under Data Display, read the 4WD Range Switch The switch voltage should be approximately 5.0 volts. Does the voltage display as described? Yes >> Replace the Transfer Case Selector Switch. Perform the TRANSFER CASE VERIFICATION TEST- No >> Go To 3 21 - 890 TRANSFER CASE - ELECTRICAL DIAGNOSTICS WK |