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Retrieving DTCS Using Abs Warning Light

  1. When ABS warning light remains illuminated, EHCU will store DTCs and disable ABS system. If DTCs are not displayed, wiring harness from EHCU to ABS warning light may be disconnected. Check and repair harness if necessary.
  2. Ensure ignition is off and brake pedal is released. Using a jumper wire, jumper Data Link Connector (DLC) terminals No. 4 and 12. See Fig 1. Turn ignition on. DTC is displayed by flashing ABS warning light.
  3. A stored DTC is displayed 3 times, each being separated by a 3.2 second pause. If multiple DTCs are set, second DTC will follow after first DTC is displayed a third time. All DTCs contain 2 digits. First digit of DTC is identified by a series of 0.4 second flashes. After a 1.2 second pause, second digit of DTC will follow in another series of 0.4 second flashes. If no DTCs have been stored, ABS warning light will repeat DTC 12 (system normal).
  4. Once DTCs are retrieved, proceed to DTC IDENTIFICATION table. Identify DTC and perform diagnostic test specified. See DIAGNOSTIC TESTS. After repairs, DTCs must be cleared. See CLEARING DIAGNOSTIC TROUBLE CODES.
Fig 1: Identifying Jumpered Terminals Of Data Link Connector (DLC)
G98F11135Courtesy of ISUZU MOTOR CO.
DTC IDENTIFICATION

Flash Code (Serial Code) Possible Malfunction (1) Go To
12 (....) Normal Display ....
13 (C0285) 2WD Controller In 4WD Vehicle Controller DTC 13 
14 (C0270) ALU Function Error DTC 14 
44 (C0271) RAM Read/Write Error DTC 14 
44 (C0272) ROM Checksum Error DTC 14 
44 (C0273) Inoperative Isolation Item  
44 (C0284) Loop Time Overrun DTC 14 
15 (C0277) Low Voltage Signal DTC 15 
44 (C0278) High Voltage Signal DTC 15 
17 (C0269) Excessive Dump Time DTC 17 
18 (C0274) Excessive Isolation Time DTC 18 
21 (C0276) "G" Sensor DTC 21 
22 (C0281) Brake Switch Failure DTC 22 
24 (C0282) 4X4 Input Signal DTC 24 
32 (C0267) Open Or Shorted ECU Output DTC 32 
44 (CO268) Stalled Motor Or ECU Output DTC 32 
35 (CO265) Open Relay Circuit DTC 35 
44 (CO266) Shorted Relay Circuit DTC 35 
41 (C0245) Front Left Open Isolation Solenoid Or Shorted ECU Output DTCS 41-46 
44 (C0247) Front Left Shorted Isolation Solenoid Or Shorted ECU Output DTCS 41-46 
42 (C0246) Front Left Open Dump Solenoid Or Shorted ECU Output DTCS 41-46 
44 (C0248) Front Left Shorted Dump Solenoid Or Shorted ECU Output DTCS 41-46 
43 (C0241) Front Right Open Isolation Solenoid Or Shorted ECU Output DTCS 41-46 
44 (C0243) Front Right Shorted Isolation Solenoid Or Shorted ECU Output DTCS 41-46 
44 (C0242) Front Right Open Dump SolenoidOr Shorted ECU Output DTCS 41-46 
44 (C0244) Front Right Shorted Open Dump Solenoid Or Shorted ECU Output DTCS 41-46 
45 (C0251) Rear Open Isolation Solenoid Or Shorted ECU Output DTCS 41-46 
44 (C0253) Rear Shorted Isolation Solenoid Or Shorted ECU Output DTCS 41-46 
46 (C0252) Rear Open Dump Solenoid Or Shorted ECU Output DTCS 41-46 
44 (C0254) Rear Shorted Dump Solenoid Or Shorted ECU Output DTCS 41-46 
51 (C0225) Front Left Open Or Shorted Sensor DTC 51 
52 (C0221) Front Right Open Or Shorted Sensor DTC 52 
53 (C0235) Rear Open Or Shorted Sensor DTC 53 
61 (CO226) Front Left Missing Sensor Signal DTC 61 
44 (CO227) Front Left Missing Sensor Signal DTC 61 
63 (CO222) Front Right Missing Sensor Signal DTC 62 
44 (C0223) Front Rigth Missing Sensor Signal DTC 62 
63 (C0236) Rear Missing Sensor Signal DTC 63 
44 (C0237) Rear Sensor Signal Dropout DTC 63 
64 (C0229) Simultaneous Dropout Of Front Sensor Signal DTC 64 
65 (CO238) Wheel Speed Error/Vehicle Speed Sensor DTC 65 
(CO286) Shorted Indicator Lamp/Faulty Circuit ....
(1) See DIAGNOSTIC TESTS.
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