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DLN-80 < SYMPTOM DIAGNOSIS > [TRANSFER: TX15B] ATP SWITCH 3. Check continuity between transfer control unit harness connec- tor E142 terminal 23 and ATP switch harness connector F55 ter- minal 8. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 3. NG >> Repair or replace damaged parts. 3. CHECK GROUND CIRCUIT 1. Turn ignition switch OFF. (Stay for at least 5 seconds.) 2. Disconnect ATP switch harness connector. 3. Check continuity between ATP switch harness connector F55 terminal 9 and ground. Also check harness for short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to power in harness or con- nectors. 4. CHECK ATP SWITCH 1. Turn ignition switch OFF. (Stay for at least 5 seconds.) 2. Remove ATP switch. Refer to DLN-12, "Component Parts Location" 3. Push and release ATP switch and check continuity between ATP switch terminals 8 and 9. OK or NG OK >> GO TO 5. NG >> Replace ATP switch. 5. CHECK TRANSFER CONTROL UNIT Check transfer control unit input/output signal. Refer to OK or NG OK >> GO TO 6. NG >> Check transfer control unit pin terminals for damage or loose connection with harness connector. If any items are damaged, repair or replace damaged parts. 6. CHECK ATP WARNING LAMP 1. Turn ignition switch ON. (Do not start engine.) 2. A/T selector lever N position and engage the parking brake. 3. Switch 4WD shift switch from 4H to 4LO or 4LO to 4H. YES >> Inspection End. NO >> Refer to . Continuity should exist. SDIA3376E Continuity should exist. SDIA2394E Terminal Condition Continuity 8 - 9 Push ATP switch Yes Release ATP switch No SDIA2395E |