Water Spray; Continuous Water Spray Does Not Operate - Sakai R2-4 Shop Manual

2-5. Water Spray

Check following items before troubleshooting.
• No blown fuses and power is applied up to fuses.
• Check any ground circuit which belongs to components to be checked.

2-5-1. Continuous water spray does not operate

• water spray mode select switch must be ON.
Reference Fig.: 2-5-1
Check point
1. Battery
2. water Spray Pump
3. Water Spray Relay
4. water Spray Mode
Select Switch
5. Harness Connecting
Between Terminals
Check/Cause
• Measure battery voltage or specific gravity.
Standard voltage : 12 V or more
Standard gravity : 1.26 or more
• If value is below standard, battery capacity is insufficient.
• when starter switch is ON, measure voltage between
water spray pump terminal inlet wire LW and chassis
ground.
Standard voltage : 12 V or more
• If above item is OK and water spray pump does not
operate, water spray pump is faulty.
(1) when starter switch is ON, measure voltage between
water spray relay terminal g inlet wire LY and chassis
ground.
Standard voltage : 12 V or more
(2) when starter switch is ON, measure voltage between
water spray relay terminal G inlet wire LB and chassis
ground.
Standard voltage : 12 V or more
(3) when starter switch is ON, measure voltage between
water spray relay terminal B outlet wire LW and chassis
ground.
Standard voltage : 12 V or more
• If above items (1) and (2) are OK and item (3) is NG,
water spray relay is faulty.
(1) when starter switch is ON, measure voltage between
water spray mode select switch terminal 1 inlet wire LB
and chassis ground.
Standard voltage : 12 V or more
(2) when starter switch is ON, measure voltage between
water spray mode select switch terminal 2 outlet wire
LY and chassis ground.
Standard voltage : 12 V or more
• If above item (1) is OK and item (2) is NG, water spray
mode select switch is faulty.
• Measure resistance of harness connecting between
terminals.
Standard resistance : 10 Ω or less
• If resistance is abnormal, harness is faulty.
TROUBLESHOOTING
Action
Charge or replace
battery.
Replace water spray
pump.
Replace water spray
relay.
Replace water spray
mode select switch.
Repair or replace
harness.
10-035