Nissan Titan. Instruction — part 530
SEC-32
< DTC/CIRCUIT DIAGNOSIS >
KEY CYLINDER SWITCH
1. Disconnect main power window and door lock/unlock switch.
2. Check continuity between main power window and door lock/
unlock switch connector (A) D7 terminals 4, 6 and front door
lock assembly LH (key cylinder switch) connector (B) D14 termi-
nals 1, 6 and body ground.
Is the inspection result normal?
YES
>> Replace main power window and door lock/unlock switch.
NO
>> Repair or replace harness.
Connector
Terminals
Connector
Terminals
Continuity
A: Main
power win-
dow and
door lock/
unlock
switch
4
B: Front
door lock
assembly
LH (key
cylinder
switch)
1
Yes
6
6
Yes
4, 6
Ground
No
WIIA0756E
HORN FUNCTION
SEC-33
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
HORN FUNCTION
Description
INFOID:0000000009878894
Perform answer-back for each operation with horn.
Component Function Check
INFOID:0000000009878895
1.
CHECK FUNCTION
1. Select "VEHICLE SECURITY HORN" in “ACTIVE TEST” mode with CONSULT.
2. Check the horn (high/low) operation.
Is the operation normal?
YES
>> Inspection End.
NO
>> Go to
.
Diagnosis Procedure
INFOID:0000000009878896
Regarding Wiring Diagram information, refer to
.
1.
CHECK HORN FUNCTION
Check horn function with horn switch
Do the horns sound?
YES
>> GO TO 2
NO
>> Refer to
.
2.
CHECK HORN RELAY POWER SUPPLY
1. Turn ignition switch ON.
2. Perform “ACTIVE TEST”, "VEHICLE SECURITY HORN" with CONSULT.
3. Using an oscilloscope or analog voltmeter, check voltage
between horn relay harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> GO TO 3
3.
CHECK HORN RELAY CIRCUIT
1. Turn ignition switch OFF.
Test item
Description
HORN
ON
Horn relay
ON (for 20 ms)
ALKIA0658ZZ
Horn relay
Ground
Test item
Voltage (V)
(Approx.)
Connector
Terminal
H-1
1
Ground
HORN
ON
Battery voltage
→ 0 → Battery voltage
Other than above
Battery voltage
SEC-34
< DTC/CIRCUIT DIAGNOSIS >
HORN FUNCTION
2. Disconnect IPDM E/R and horn relay connector.
3. Check continuity between IPDM E/R harness connector and
horn relay harness connector.
4. Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair or replace harness.
4.
CHECK INTERMITTENT INCIDENT
GI-42, "Intermittent Incident"
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
PCS-28, "Removal and Installation of IPDM E/R"
.
NO
>> Repair or replace the malfunctioning part.
WIIA0679E
IPDM E/R
Horn relay
Continuity
Connector
Terminal
Connector
Terminal
E122
45
H-1
1
Yes
IPDM E/R
Ground
Continuity
Connector
Terminal
E122
45
Ground
No
VEHICLE SECURITY INDICATOR
SEC-35
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
L
M
A
B
SEC
N
O
P
VEHICLE SECURITY INDICATOR
Description
INFOID:0000000009878897
• Vehicle security indicator is built in combination meter.
• NATS (Nissan Anti-Theft System) and vehicle security system conditions are indicated by blink or illumina-
tion of vehicle security indicator.
Component Function Check
INFOID:0000000009878898
1.
CHECK FUNCTION
1. Perform “THEFT IND” in the “Active Test” mode with CONSULT.
2. Check vehicle security indicator operation.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Refer to
Diagnosis Procedure
INFOID:0000000009878899
Regarding Wiring Diagram information, refer to
.
1.
SECURITY INDICATOR LAMP ACTIVE TEST
With CONSULT
Check "THEFT IND” in "ACTIVE TEST" mode with CONSULT.
Without CONSULT
1. Disconnect BCM.
2. Check voltage between BCM harness connector M18 terminal
23 and ground.
Is the inspection result normal?
YES
>> Security indicator lamp is OK.
NO
>> GO TO 2
2.
SECURITY INDICATOR LAMP CHECK
Check security indicator lamp condition.
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Replace security indicator lamp.
3.
CHECK HARNESS CONTINUITY
1. Turn ignition switch OFF.
2. Disconnect BCM and security indicator lamp connector.
Test item
Description
THEFT IND
ON
Vehicle security indicator
ON
OFF
OFF
Connector
Terminals
Condition
Voltage (V)
(Approx.)
(+)
(-)
M18
23
Ground
ON
0
OFF
Battery voltage
LIIA0523E
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