Check The Relay Terminal Voltage - 3; Check The Relay Terminal Voltage - 4; Check The Relay Terminal Voltage - 5 - Kubota V3800-CR-TE4 Diagnosis Manual

V3800-CR-TE4,V3800-CR-TIE4, DM

4. Check the Relay Terminal Voltage - 3

1. Measure voltage at relay terminal 3 (3).
Factory
10 V or higher
specification
OK Go to "5. Check the Relay Terminal Voltage - 4".
NG Check for a wiring harness open circuit and / or connector connection
fault. → Repair.
Inspect fuse. → Replace.
(1) Terminal 1
(2) Terminal 2
(3) Terminal 3
(4) Terminal 4

5. Check the Relay Terminal Voltage - 4

1. Turn the key switch OFF and measure voltage at relay terminal
4 (4).
NOTE
• Perform measurement two seconds after cycling the key
switch ON → OFF.
Factory
10 V or higher
specification
OK Go to "6. Check the Relay Terminal Voltage - 5".
NG Check the relay. → Repair.
(1) Terminal 1
(2) Terminal 2
(3) Terminal 3
(4) Terminal 4

6. Check the Relay Terminal Voltage - 5

1. With the key switch OFF, measure voltage at the ECU main
relay terminal (B-33).
Factory
10 V or higher
specification
OK Go to "7. Check the Relay Terminal Voltage - 6".
NG Check wiring harness between relay and ECU and connectors. →
Repair.
7. Check the Relay Terminal Voltage - 6
1. Turn the key switch ON and measure voltage at relay terminal
4 (4).
Factory
Approx. 0 V
specification
OK Faulty relay contacts → Replace.
NG Go to "8. Check the Key Switch Signal -1".
(1) Terminal 1
(2) Terminal 2
(3) Terminal 3
(4) Terminal 4
1-S299
COMMON RAIL SYSTEM
(a) Main Relay Terminal Layout
9Y1200186CRS0135US0
(a) Main Relay Terminal Layout
9Y1200186CRS0136US0
9Y1200192CRS0844US0
(a) Main Relay Terminal Layout
9Y1200186CRS0137US0
KiSC issued 05, 2012 A