Cancel Unit Input Test
1. Remove the steering column covers. Disconnect the
10P 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 input
tests at the connector.
— If any test indicates a problem, find and correct
the cause, then recheck the system.
— If all the input tests prove OK, the control unit
must be faulty; replace it.
10P CONNECTOR
TURN SIGNAL
CANCEL UNIT
Terminal
Test condition
Test: Desired result
Possible cause if result is not obtained
C10
(BLK)
Under all conditions
Check for continuity to ground:
There should be continuity.
• Poor ground (G401, G402, G403)
• An open in the wire
C1
(GRY/RED)
Ignition switch on (II)
Check for voltage to ground:
There should be battery voltage.
• Blown No. 5 (15 A) fuse
• An open in the wire
C5
(PUR)
Headlight switch
Check for voltage to ground:
There should be approx. 5 volt.
• Faulty headlight switch or taillight
relay
• An open in the wire
C2
(BRN)
Turn signal switch in
right position
C6
(GRY)
Check for continuity between the C2
and C6 terminals:
There should be continuity.
• Faulty turn signal switch
• An open in the wire
C2
(BRN)
Turn signal switch in left
position
C9
(GRN/BLK)
Check for continuity between the C2
and C9 terminals:
There should be continuity.
• Faulty turn signal switch
• An open in the wire
C3
(ORN)
Under all conditions
C4
(WHT)
Check for continuity between the C3
and C4 terminals:
There should be continuity.
• Faulty cancel solenoid
• An open in the wire
C7
(BLU/YEL)
Connect the C1 terminal
to the C7 terminal, then
turn the ignition switch
ON
(II).
The right turn signal lights should
come on.
• Blown bulb
• Faulty turn signal/hazard relay
• Poor ground (G301, G401, G402,
G403, G551)
• An open in the wire
C8
(BLU/GRN)
Connect the C1 terminal
to the C8 terminal, then
turn the ignition switch
ON
(II).
The left turn signal lights should
come on.
• Blown bulb
• Faulty turn signal/hazard relay
• Poor ground (G301, G401, G402,
G403, G551)
• An open in the wireProCarManuals.com
