WTEC III ELECTRONIC CONTROLS TROUBLESHOOTING MANUAL DIAGNOSTIC CODES Table 6–2.
WT Series Diagnostic Codes (cont’d) CHECK TRANS Light Inhibited Operation Description Main Code Sub- code Description 44 (cont’d) 23 Short-to-ground, H solenoid circuit No Differential lock inhibited (3070 only), retarder operation inhibited 24 Short-to-ground, J solenoid circuit No Low and 1st inhibited 26 Short-to-ground, N solenoid circuit No Low and 1st inhibited, retarder allowed 45 12 Open circuit, A solenoid circuit Yes DNS, SOL OFF (hydraulic default), DNA (pg 6–68) 13 Open circuit, B solenoid circuit Yes DNS, SOL OFF (hydraulic default), DNA 14 Open circuit, C solenoid circuit Yes DNS, SOL OFF (hydraulic default), DNA 15 Open circuit, D solenoid circuit Yes DNS, SOL OFF (hydraulic default), DNA 16 Open circuit, E solenoid circuit Yes DNS, SOL OFF (hydraulic default), DNA 21 Open circuit, F solenoid circuit No Lockup inhibited, DNA 22 Open circuit, G solenoid circuit Yes DNS, SOL OFF (hydraulic default), DNA 23 Open circuit, H solenoid circuit No Differential lock inhibited (3070 only), retarder inhibited 24 Open circuit, J solenoid circuit No Low and 1st inhibited 26 Open circuit, N solenoid circuit No Low and 1st inhibited, retarder allowed 46 21 Overcurrent, F solenoid circuit No Lockup inhibited, DNA (pg 6–72) 26 Overcurrent, N and H solenoid circuit No Low and first inhibited or retarder inhibited, DNA 27 Overcurrent, A-Hi solenoid circuit Yes DNS, SOL OFF (hydraulic default), DNA 51 (pg 6–74) 01 Offgoing ratio test (during shift), Low to 1 Yes DNS, RPR, DNA 10 Offgoing ratio test (during shift), 1 to Low Yes DNS, RPR, DNA 12 Offgoing ratio test (during shift), 1 to 2 Yes DNS, RPR, DNA 21 Offgoing ratio test (during shift), 2 to 1 Yes DNS, RPR, DNA 23 Offgoing ratio test (during shift), 2 to 3 Yes DNS, RPR, DNA 24 Offgoing ratio test (during shift), 2 to 4 Yes DNS, RPR, DNA 35 Offgoing ratio test (during shift), 3 to 5 Yes DNS, RPR, DNA 42 Offgoing ratio test (during shift), 4 to 2 Yes DNS, RPR, DNA 43 Offgoing ratio test (during shift), 4 to 3 Yes (1) DNS, RPR, DNA 45 Offgoing ratio test (during shift), 4 to 5 Yes (1) DNS, RPR, DNA Copyright © 2001 General Motors Corp.