Cancel Unit Input Test
1. Remove the steering column covers. Disconnect the
10-P connector from the turn signal cancel unit.
2. Inspect the connector terminals to be sure they are
all making good contact.
If the terminals are bent, loose or corroded, repair
them as necessary, and recheck the system.
If the terminals look OK, make the following in-
put tests at the connector.
If any test indicates a problem, find and cor-
rect the cause, then recheck the system.
If all the input tests prove OK, the control unit
must be faulty; replace it.
C9 (GRN/BLK)
C10 (BLK)
10-P CONNECTOR
TURN SIGNAL
CANCEL UNIT
C7 (BLU/YEL)
C5 (PUR)
C3(ORN)
C1 (YEL)
View
from
wire
side
C2 (BRN)
C4 (WHT)
C6 (GRY)
C8 (BLU/GRN)
Test condition
Under all conditions.
Ignition switch ON.
Headlight switch
Turn signal switch in
right position.
Turn signal switch in
left position.
Under all conditions.
Connect the C1
terminal to the C7
terminal, then turn
the ignition switch
ON.
Connect the C1
terminal to the C8
terminal, then turn
the ignition switch
ON.
Test: Desired result
Check for continuity to ground:
There should be continuity.
Check for voltage to ground:
There should be battery voltage.
Check for voltage to ground:
There should be battery voltage.
Check for continuity between the
C2 and C6 terminals:
There should be continuity.
Check for continuity between the
C2 and C9 terminals:
There should be continuity.
Check for continuity between the
C3 and C4 terminals:
There should be continuity.
Right turn signal lights should come
on.
Left turn signal lights should come
on.
Possible cause if result is not obtained
Poor ground (G401, G402).
An open in the wire.
Blown No. 5 (10 A) fuse.
An open in the wire.
Faulty headlight switch or taillight
relay.
An open in the wire.
Faulty turn signal switch.
An open in the wire.
Faulty turn signal switch.
An open in the wire.
Faulty cancel solenoid.
An open in the wire.
Blown bulb.
Faulty turn signal/hazard relay.
Poor ground (G301, G401, G402,
G551).
An open in the wire.
Blown bulb.
Faulty turn signal/hazard relay.
Poor ground (G301, G401, G402,
G551).
An open in the wire.
No. Terminal
C10
(BLK)
1
2 C1
(YEL)
C5
(PUR)
3
4 C2
(BRN)
C6
(GRY)
5 C2
(BRN)
C9
(GRN/BLK)
6 C3
(ORN)
C4
(WHT)
7 C7
(BLU/YEL)
C8
(BLU/GRN)
1. Remove the steering column covers. Disconnect the
10-P connector from the turn signal cancel unit.
2. Inspect the connector terminals to be sure they are
all making good contact.
If the terminals are bent, loose or corroded, repair
them as necessary, and recheck the system.
If the terminals look OK, make the following in-
put tests at the connector.
If any test indicates a problem, find and cor-
rect the cause, then recheck the system.
If all the input tests prove OK, the control unit
must be faulty; replace it.
C9 (GRN/BLK)
C10 (BLK)
10-P CONNECTOR
TURN SIGNAL
CANCEL UNIT
C7 (BLU/YEL)
C5 (PUR)
C3(ORN)
C1 (YEL)
View
from
wire
side
C2 (BRN)
C4 (WHT)
C6 (GRY)
C8 (BLU/GRN)
Test condition
Under all conditions.
Ignition switch ON.
Headlight switch
Turn signal switch in
right position.
Turn signal switch in
left position.
Under all conditions.
Connect the C1
terminal to the C7
terminal, then turn
the ignition switch
ON.
Connect the C1
terminal to the C8
terminal, then turn
the ignition switch
ON.
Test: Desired result
Check for continuity to ground:
There should be continuity.
Check for voltage to ground:
There should be battery voltage.
Check for voltage to ground:
There should be battery voltage.
Check for continuity between the
C2 and C6 terminals:
There should be continuity.
Check for continuity between the
C2 and C9 terminals:
There should be continuity.
Check for continuity between the
C3 and C4 terminals:
There should be continuity.
Right turn signal lights should come
on.
Left turn signal lights should come
on.
Possible cause if result is not obtained
Poor ground (G401, G402).
An open in the wire.
Blown No. 5 (10 A) fuse.
An open in the wire.
Faulty headlight switch or taillight
relay.
An open in the wire.
Faulty turn signal switch.
An open in the wire.
Faulty turn signal switch.
An open in the wire.
Faulty cancel solenoid.
An open in the wire.
Blown bulb.
Faulty turn signal/hazard relay.
Poor ground (G301, G401, G402,
G551).
An open in the wire.
Blown bulb.
Faulty turn signal/hazard relay.
Poor ground (G301, G401, G402,
G551).
An open in the wire.
No. Terminal
C10
(BLK)
1
2 C1
(YEL)
C5
(PUR)
3
4 C2
(BRN)
C6
(GRY)
5 C2
(BRN)
C9
(GRN/BLK)
6 C3
(ORN)
C4
(WHT)
7 C7
(BLU/YEL)
C8
(BLU/GRN)