Isuzu 1999 RODEO Workshop Manual page 2241

Both Front Side Marker Lights Inoperative
Step
1 Is fuse (15A) normal?
2 Is the tail relay normal?
3 Is B-8 terminal (B-6 terminal) grounded securely?
4 Remove the connector of the lighting switch.
Is there any continuity between I-32 terminals and 2
when the switch is turned to parking or headlight
position?
5 Is the battery voltage applied between the harness side
connector I-32 terminal 3 and the ground?
6 Repair a poor connection at the connectors or an open
circuit between I-34 terminal 1 and H-19 terminal 6, or
B-8 terminal and ( I-31 terminal 4 and B-6 terminal).
Is the action complete?
Front Side Marker Light On The Left (or Right) Side Inoperative
Step
1 Is the front side marker light bulb on the left (or right)
side normal?
2 Is there continuity between H-19 terminal 6 and C-32
terminal 3 (C-31 terminal 3)?
3 Repair a poor connection at the connectors or an open
circuit between C-23 terminal (C-31 terminal 4) and B-8
terminal (B-6 terminal).
Is the action complete?
NOTE: Connectors in parenthesis "( )" indicates the
check point of the taillight on the right side.
Action
Action
WIRING SYSTEM
Value(s) Yes
— Go to Step 2
— Go to Step 3
— Go to Step 4
— Go to Step 5
— Go to Step 6
— Verify repair
Value(s) Yes
— Go to Step 2
— Go to Step 3
— Verify repair
8D–91
No
Replace the
fuse
Replace the
tail relay
Ground B-8
terminal (B-6
terminal)
terminal
securely
Repair or
replace the
lighting switch
Repair a poor
connection at
the
connectors or
an open
circuit
between fuse
I-34 terminal
3 and I-32
terminal 3
—
No
Replace the
bulb
Repair a poor
connection at
the
connectors or
an open
circuit in the
circuit
—