Tacoma & 4Runner

Disconnect electrical connector from clutch start cancel switch located on instrument panel, left of steering column. Remove clutch start switch from instrument panel (if necessary).
To check switch continuity, connect positive lead of ohmmeter to terminal No. 2 and negative lead to terminal No. 1 on switch electrical connector. See Fig 1. Continuity should not exist.
Connect positive lead of ohmmeter to terminal No. 3 and negative lead to terminal No. 1. Continuity should not exist. Ensure continuity does not exist between terminals No. 2 and 3.
If continuity is as specified, go to next step. Replace clutch start cancel switch if continuity is not as specified.
To check switch operation, using a fused jumper wire connect battery voltage to switch connector terminal No. 3. Using another jumper wire, connect ground to switch connector terminal No. 1. Connect positive lead of ohmmeter to terminal No. 2, and negative lead to terminal No. 1 on switch electrical connector. Continuity should not exist. Perform STEP 1. See Figure.
With battery and ohmmeter still connected, depress switch button. Ensure indicator light illuminates in clutch start cancel switch, and continuity exists between terminals No. 1 and 2. Perform STEP 2. See Figure.
Disconnect battery voltage. Ensure continuity does not exist between terminals No. 1 and 2. Perform STEP 3. See Figure. Replace clutch start cancel switch if operation is not as specified.

Fig 1: Testing Clutch Start Cancel Switch Continuity (Tacoma & 4Runner)