Mazda 1996 626 Service Manual page 165

Flowchart No.1 Symptom
Possible cause
• Burnt TAIL 15A fuse
• Damaged TNS relay
• Damaged combination switch
• Open or short circuit in wiring harness
• Poor connection of connector
c
A
B
D
C A
K
M X
*
H
* N L J
E— 40
EXTERIOR LIGHTING SYSTEM
TNS do not illuminate
Step 1
Check TAIL 15A fuse in the main fuse block.
OK
Burnt
Step 2
1. Remove the TNS relay.
2. Measure the voltage at terminals A (W/L) and C (W/L)
of the TNS relay connector.
B+
Other
Step 3
1. Apply battery positive voltage and check for continuity
between the TNS relay terminals.
C A
Step
2. If correct, install the TNS relay and go to Step 4.
3. If not as specified, replace the TNS relay.
Step 4
1. Remove the column cover.
2. Measure the voltage at terminal C (LG) of the combina­
tion switch connector.
*
C
E
D *
F
B+
Other
Fuse
Go to Step 2
Replace fuse after checking and repairing
wiring harness
Voltage
Go to Step 3
Repair wiring harness
(TAIL 15A fuse— TNS relay)
0 - 0 : Continuity
T e rm in a l
A
o
1
-------
B+
2
(Refer to the 1996 626/MX-6 Workshop Manual, section S.)
Voltage
Go to Step 5
Repair wiring harness
(TNS relay— Combination switch)
Action
B+: Battery positive voltage
Action
B+: Battery positive voltage
B
C
- - - - - -o
---
o
GND
—
B+: Battery positive voltage
Action
D
o