LEMON Manuals: Even more car manuals for everyone
Home >> Suzuki >> 2012 >> Equator Base >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission System) >> Diagnostic information and Procedures >> 1St Position Switch Circuit Check >> Diagnosis Procedure

Diagnosis Procedure

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

Step Action YES NO
1  CHECK CAN COMMUNICATION LINE 
Perform "DTC check". Refer to [SDT FUNCTION (AT) ].
Is any malfunction in the CAN communication indicated in the results? 		 Check CAN communication line. Refer to DTC U1000 CAN Communication Line  . GO TO 2.
2  CHECK 1ST POSITION SWITCH CIRCUIT 
With SDT 
  1. Turn ignition switch "ON".
  2. Select "ECU INPUT SIGNALS" in "Data list" mode for "AT" with SDT.

  3. Read out "1 POSITION SW". Check the signal of the 1st position switch is indicated properly.

G00537346G00537347Courtesy of SUZUKI OF AMERICA CORP.

Without SDT 
  1. Turn ignition switch "ON". (Do not start engine)
  2. Check voltage between A/T shift selector connector terminal and ground.
G00537346G00537347Courtesy of SUZUKI OF AMERICA CORP.

OK or NG 		 GO TO 5. GO TO 3.
3  CHECK OVERDRIVE CONTROL SWITCH 
  1. Turn ignition switch "OFF".
  2. Disconnect A/T shift selector connector.
  3. Check continuity between A/T shift selector connector terminals.
G00537348Courtesy of SUZUKI OF AMERICA CORP.

OK or NG 		 GO TO 4. Repair or replace A/T shift selector assembly.
4  DETECT MALFUNCTIONING ITEM 
Check the following. If any items are damaged, repair or replace damaged parts.
  • Harness for short or open between combination meter connector terminal 18 and A/T shift selector connector terminal 9.
  • Harness for short or open between A/T shift selector connector terminal 10 and ground.

OK or NG 		 GO TO 5. Repair or replace damaged parts.
5  CHECK COMBINATION METER 
Check the combination meter. Refer to [METER SYSTEM: SYSTEM DESCRIPTION ]
OK or NG 		 INSPECTION END  Repair or replace damaged parts.
  1. CHECK CAN COMMUNICATION LINE

    Perform the self-diagnosis. Refer to "SDT FUNCTION ".

    Is any malfunction in the CAN communication indicated in the results? 

    YES: Check CAN communication line. Refer to DTC U1000 CAN Communication Line .

    NO: GO TO 2.

  2. CHECK 1ST POSITION SWITCH CIRCUIT

    With SDT 

    1. Turn ignition switch "ON".
    2. Select "ECU INPUT SIGNALS" in "Data list" mode for "AT" with SDT.
    3. Read out "1 POSITION SW".

    Check the signal of the 1st position switch is indicated properly.

    DISPLAY VALUE CHART

    Monitor item Condition Display value
    1 POSITION SW When setting selector lever to "1" position. ON
    When setting selector lever to other positions. OFF

    Without SDT 

    1. Turn ignition switch "ON". (Do not start engine)
    2. Check voltage between A/T shift selector connector terminal and ground.
    CONNECTOR TERMINAL VOLTAGE CHART

    Item Connector Terminal Condition Data (Approx.)
    1st position switch M156 9 - Ground When setting selector lever to "1" position. 0V
    When setting selector lever to other positions. Battery voltage
    Fig 1: Checking Voltage Between A/T Shift Selector Connector Terminal And Ground
    G06613393Courtesy of SUZUKI OF AMERICA CORP.

    OK or NG 

    OK: GO TO  5.

    NG: GO TO 3.

  3. CHECK 1ST POSITION SWITCH
    1. Turn ignition switch "OFF".
    2. Disconnect A/T shift selector connector.
    3. Check continuity between A/T shift selector connector terminals.
    CONNECTOR TERMINAL CONTINUITY CHART

    Item Connector Terminal Condition Continuity
    1st position switch M156 9 - 10 When setting selector lever to "1" position. Yes
    When setting selector lever to other positions. No
    Fig 2: Checking Continuity Between A/T Shift Selector Connector Terminals
    G06613394Courtesy of SUZUKI OF AMERICA CORP.

    OK or NG 

    OK: GO TO 4.

    NG: Repair or replace A/T shift selector assembly.

  4. DETECT MALFUNCTIONING ITEM

    Check the following. If any items are damaged, repair or replace damaged parts.

    • Harness for short or open between combination meter connector terminal 18 and A/T shift selector connector terminal 9.
    • Harness for short or open between A/T shift selector connector terminal 10 and ground.

    OK or NG 

    OK: GO TO 5.

    NG: Repair or replace damaged parts.

  5. CHECK COMBINATION METER

    Check the combination meter. Refer to "METER DIAGNOSIS DESCRIPTION ".

    OK or NG 

    OK: INSPECTION END 

    NO: Repair or replace damaged parts.

scientia non olet · About LEMON Manuals