STEERING PAD SWITCH INSPECTION

PROCEDURE


  1. INSPECT STEERING PAD SWITCH ASSEMBLY (w/ DISP Switch)


    1. Measure the resistance according to the value(s) in the table below.

      A004X0KE02
      Standard Resistance
      Tester Connection Condition Specified Condition
      z4-1 (HO) - A-1 (HO) Always Below 2.5 Ω
      z4-4 (DIST) - z4-7 (ECC) No switch pushed 1 MΩ or higher
      Distance control switch pushed*1 Below 2.5 Ω
      z4-2 (+DP) - z4-3 (-DP) No switch pushed 1 MΩ or higher
      DISP switch pushed Below 2.5 Ω
      z4-11 (AU1) - z4-8 (EAU) No switch pushed 95 to 105 kΩ
      Seek+ switch pushed Below 2.5 Ω
      Seek- switch pushed 313 to 345 Ω
      Volume+ switch pushed 950 to 1050 Ω
      Volume- switch pushed 2955 to 3265 Ω
      z4-10 (AU2) - z4-8 (EAU) No switch pushed 95 to 105 kΩ
      MODE switch pushed Below 2.5 Ω
      Voice switch pushed*2 2955 to 3265 Ω
      On hook switch pushed*2 313 to 345 Ω
      Off hook switch pushed*2 950 to 1050 Ω
      z4-6 (SUP) - z5-1 (SUP) Always Below 2.5 Ω
      z4-7 (ECC) - z5-3 (ECC) Always Below 2.5 Ω
      z4-12 (SDN) - z5-2 (SDN) Always Below 2.5 Ω

      • *1: w/ Dynamic Radar Cruise Control System

      • *2: w/ Telephone Microphone Assembly

      Tech Tips

      If the result is not as specified, replace the steering pad switch assembly.

      Text in Illustration
      *A w/ Telephone Microphone Assembly *B w/ Dynamic Radar Cruise Control System
      *a

      Component without harness connected

      (Steering Pad Switch Assembly)

      		 *b MODE
      *c Volume+ *d Volume-
      *e Seek+ *f Seek-
      *g DISP *h Voice
      *i Off hook *j On hook
      *k Distance Control - -

    2. Check the illumination

      A004Z0IE04

      1. Disconnect the steering pad switch assembly connector.

      2. Check that the steering pad switch assembly illuminates according to the table below.

        OK
        Connection Specified Condition

        Auxiliary battery positive (+) → 5 (IL+2)

        Auxiliary battery negative (-) → 8 (EAU)

        		 Switches of steering pad switch LH side illuminate

        Auxiliary battery positive (+) → 5 (IL+2)

        Auxiliary battery negative (-) → 3 (-DP)

        		 Switches of steering pad switch RH side illuminate

        Tech Tips

        If the result is not as specified, replace the steering pad switch assembly.

        Text in Illustration
        *a

        Component without harness connected

        (Steering Pad Switch Assembly)

        		 - -

  2. INSPECT STEERING PAD SWITCH ASSEMBLY (w/o DISP Switch)


    1. Measure the resistance according to the value(s) in the table below.

      A004XTCE02
      Standard Resistance
      Tester Connection Condition Specified Condition
      z4-1 (HO) - A-1 (HO) Always Below 2.5 Ω
      z4-4 (DIST) - z4-7 (ECC) No switch pushed 1 MΩ or higher
      Distance control switch pushed*1 Below 2.5 Ω
      z4-11 (AU1) - z4-8 (EAU) No switch pushed 95 to 105 kΩ
      Seek+ switch pushed Below 2.5 Ω
      Seek- switch pushed 313 to 345 Ω
      Volume+ switch pushed 950 to 1050 Ω
      Volume- switch pushed 2955 to 3265 Ω
      z4-10 (AU2) - z4-8 (EAU) No switch pushed 95 to 105 kΩ
      MODE switch pushed Below 2.5 Ω
      Voice switch pushed 2955 to 3265 Ω
      On hook switch pushed 313 to 345 Ω
      Off hook switch pushed 950 to 1050 Ω
      z4-2 (+DP) - z4-8 (EAU) No switch pushed 95 to 105 kΩ
      Enter switch pushed Below 2.5 Ω
      Top switch pushed 313 to 345 Ω
      Back switch pushed 950 to 1050 Ω
      z4-3 (+DP2) - z4-8 (EAU) No switch pushed 95 to 105 kΩ
      Left switch pushed Below 2.5 Ω
      Up switch pushed 313 to 345 Ω
      Down switch pushed 950 to 1050 Ω
      Right switch pushed 2955 to 3265 Ω
      z4-6 (SUP) - z5-1 (SUP) Always Below 2.5 Ω
      z4-7 (ECC) - z5-3 (ECC) Always Below 2.5 Ω
      z4-12 (SDN) - z5-2 (SDN) Always Below 2.5 Ω

      • *1: w/ Dynamic Radar Cruise Control System

      Tech Tips

      If the result is not as specified, replace the steering pad switch assembly.

      Text in Illustration
      *A w/ Dynamic Radar Cruise Control System - -
      *a

      Component without harness connected

      (Steering Pad Switch Assembly)

      		 *b Seek+
      *c Seek- *d Volume+
      *e Volume- *f MODE
      *g Off hook *h On hook
      *i Voice *j Up
      *k Down *l Left
      *m Right *n Enter
      *o Back *p Distance Control
      *q Top - -

    2. Check the illumination

      B001MNTE02

      1. Connect a battery positive (+) lead to terminal 5 (IL+2) and a negative (-) lead to terminal 8 (EAU) of the steering pad switch assembly connector.

      2. Check that the switch illumination comes on.

        OK
        Steering pad switch illumination comes on.

        Tech Tips

        If the result is not as specified, replace the steering pad switch assembly.

        Text in Illustration
        *a

        Component without harness connected

        (Steering Pad Switch Assembly)

        		 - -