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Front Wiper/Washer Switch Intermittent Operation: Echo

  1. Disconnect combination switch connector. Turn wiper/washer switch to INT position. Rotate intermittent time control to FAST position. Connect fused jumper between battery voltage and terminal No. 8. Connect jumper wire between ground and terminal No. 5. See Figure. Connect DVOM positive lead to terminal No. 7 and negative lead to terminal No. 5. DVOM should indicate battery voltage.
  2. With DVOM connected, momentarily connect terminals No. 6 and 8 with a fused jumper wire. With jumper still connected to terminal No. 8, move jumper from terminal No. 6 to terminal No. 5. With wiper switch in FAST position, DVOM reading should change from zero volts to battery voltage in about 3 seconds. With wiper switch in SLOW position, DVOM reading should change from zero volts to battery voltage in 10-15 seconds. If operation is not as specified, replace wiper/washer switch. See FRONT WIPER SWITCH  under REMOVAL & INSTALLATION.
  3. DVOM should indicate battery voltage. Monitor DVOM reading while rotating intermittent time control from SLOW to FAST positions. In SLOW position, voltage will change from zero to battery voltage in 10-15 seconds. In FAST position, voltage will change from zero to battery voltage in 1-3 seconds. If operation is not as specified, replace wiper/washer switch. See FRONT WIPER SWITCH  under REMOVAL & INSTALLATION.
  4. DVOM should indicate battery voltage. With DVOM connected, momentarily connect terminals No. 16 and 17 with a fused jumper. With jumper still connected to terminal No. 16, move jumper from terminal No. 17 to terminal No. 2. See Figure. Monitor DVOM reading while rotating intermittent time control from SLOW to FAST positions. In SLOW position, voltage will change from zero to battery voltage within 10-15 seconds (6-16 seconds on Land Cruiser and LX 470). In FAST position, voltage will change from zero to battery voltage in 1-3 seconds. If operation is not as specified, replace wiper/washer switch. See FRONT WIPER SWITCH  under REMOVAL & INSTALLATION.
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