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P0594-SPEED CONTROL SERVO POWER RELAY CIRCUIT (CONTINUED) 3. STOP LAMP SWITCH Disconnect and remove the Stop Lamp Switch. Measure the resistance across the (V32) S/C Supply circuit terminal and the (V30) S/C Brake Switch Output circuit Push the Plunger of the Switch in and let it out. Does the resistance change from below 5.0 ohms to an open circuit? Yes >> Go To 4 No >> Replace the Stop Lamp Switch. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 4. (V30) S/C BRAKE SWITCH OUTPUT Turn the ignition off. Connect the Stop Lamp Switch harness connector and install the Disconnect the Speed Control Servo harness connector. Ignition on, engine not running. NOTE: It is necessary to PRESS and HOLD the Speed Control Does the test light illuminate brightly? Yes >> Replace the S/C Servo. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 5 5. (V30) S/C BRAKE SWITCH OUTPUT CIRCUIT OPEN Turn the ignition off. Disconnect the Brake Lamp Switch harness connector. Measure the resistance of the (V30) S/C Brake Switch Output circuit Is the resistance below 5.0 ohms? Yes >> Repair the excessive resistance in the (V30) S/C Brake Switch Output circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer No >> Go To 6 HB ENGINE ELECTRICAL DIAGNOSTICS 9 - 675 |