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Home >> Suzuki >> 2009 >> Equator Base, 4D Pickup >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 7 (Transfer) >> Diagnostic Information and Procedures >> P1813 4WD Shift Switch >> Diagnosis Procedure
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Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.
DIAGNOSIS PROCEDURE

Step Action YES NO
1  CHECK 4WD SHIFT SWITCH SIGNAL 
  1. With SDT 
    1. Turn ignition switch "ON".
    2. Select "Data list" mode for "4WD" with SDT.
    3. Read out ON/OFF switching action of the "2WD SWITCH", "4H SWITCH", "4L SWITCH" with operating 4WD shift switch.
  2. Without SDT 
    1. Turn ignition switch "ON".
    2. Check voltage between transfer control unit harness connector terminals and ground.
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G06444753G06444754

Are the inspection results normal? 		 GO TO 5. GO TO 2.
2  CHECK 4WD SHIFT SWITCH POWER SUPPLY CIRCUIT 
  1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
  2. Disconnect 4WD shift switch harness connector.
  3. Check voltage between 4WD shift switch harness connector terminal 1 and ground.
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G06444755G06444756G06444757G06444758

  1. 4. Turn ignition switch "ON". (Do not start engine.)
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  1. 5. Check voltage between 4WD shift switch harness connector terminal 1 and ground.
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Is there voltage? 		 GO TO 3.
  1. Check harness for short or open between 4WD shift switch harness connector terminal 1 and transfer shut off relay 2 harness connector E157 terminal 5 and 10A fuse (No. 58 located in the fuse and relay box). If any items are damaged, repair or replace damaged parts.
  2. Perform trouble diagnosis for power supply circuit. Refer to [P1801, P1811 POWER SUPPLY CIRCUIT FOR TRANSFER CONTROL UNIT ].
3  CHECK HARNESS BETWEEN 4WD SHIFT SWITCH AND TRANSFER CONTROL UNIT 
  1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
  2. Disconnect transfer control unit harness connector and the 4WD shift switch harness connector.
  3. Check continuity between the following terminals.
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  • Transfer control unit harness connector M152 terminal 14 and 4WD shift switch harness connector M141 terminal 3.
  • Transfer control unit harness connector M152 terminal 15 and 4WD shift switch harness connector M141 terminal 5.
  • Transfer control unit harness connector M152 terminal 16 and 4WD shift switch harness connector M141 terminal 6.

    Continuity should exist. 

    Also check harness for short to ground and short to power.


Is there continuity? 		 GO TO 4. Repair or replace damaged parts.
4  CHECK 4WD SHIFT SWITCH 
  1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
  2. Remove 4WD shift switch harness connector.
  3. Operate 4WD shift switch and check continuity between 4WD shift switch terminals.
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G06444760G06444761

Are the inspection results normal? 		 GO TO 5. Replace 4WD shift switch.
5  CHECK TRANSFER CONTROL UNIT 
Check transfer control unit input/output signal. Refer to [TRANSFER CONTROL UNIT: REFERENCE VALUE ].
Are the inspection results normal? 		 GO TO 6. 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 DTC 
Drive the vehicle and then perform "DTC check".
Is DTC P1813 displayed? 		 Replace transfer control unit. Refer to [TRANSFER CONTROL UNIT: REMOVAL AND INSTALLATION ]. Inspection End.
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