ELECTRIC FUEL PUMP CONTROL SYSTEM (4WD model) - Inspection (Cont'd): Fuel Pump Control Unit Check / Component Check / Fuel Pressure Check

EF & EC-181spec table

Electric fuel pump control system applies to 4WD model (GA13DS/GA14DS/GA16DS).

Inspection (Cont'd)

FUEL PUMP CONTROL UNIT CHECK

NOTE

First, disconnect starter motor "S" terminal. This check should be performed without starting engine. Check fuel pump control unit, following the table shown below.

Fuel Pump Control Unit Check

Step	Condition - Alternator "L" terminal	Condition - Oil pressure switch terminal	Condition - Ignition switch	Output voltage of terminal 3
1	Connected	Connected	OFF	0V
2	Connected	Connected	ACC	0V
3	Connected	Connected	ON	0V
4	Connected	Connected	START	0V
5	Disconnected	Connected	ON	Battery voltage
6	Disconnected	Connected	START	Battery voltage
7	Disconnected	Disconnected	ON	Battery voltage
8	Disconnected	Disconnected	START	Battery voltage
9	Connected	Disconnected	ON	Battery voltage
10	Connected	Disconnected	START	Battery voltage

Condition - Alternator "L" terminalConnected

Condition - Oil pressure switch terminalConnected

Condition - Ignition switchOFF

Output voltage of terminal 30V

Condition - Alternator "L" terminalConnected

Condition - Oil pressure switch terminalConnected

Condition - Ignition switchACC

Output voltage of terminal 30V

Condition - Alternator "L" terminalConnected

Condition - Oil pressure switch terminalConnected

Condition - Ignition switchON

Output voltage of terminal 30V

Condition - Alternator "L" terminalConnected

Condition - Oil pressure switch terminalConnected

Condition - Ignition switchSTART

Output voltage of terminal 30V

Condition - Alternator "L" terminalDisconnected

Condition - Oil pressure switch terminalConnected

Condition - Ignition switchON