Nissan Titan. Manual — part 535
SEC-52
< ECU DIAGNOSIS INFORMATION >
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
*: When horn reminder is ON
Fail Safe
INFOID:0000000009878909
CAN COMMUNICATION CONTROL
When CAN communication with ECM and BCM is impossible, IPDM E/R performs fail-safe control. After CAN
communication recovers normally, it also returns to normal control.
If No CAN Communication Is Available With BCM
50
W/R
Front fog lamp (LH)
(if equipped)
Output
ON or
START
Lighting switch
must be in the
2nd position
(LOW beam is
ON) and the front
fog lamp switch
OFF
0V
ON
Battery voltage
51
W/R
Front fog lamp (RH)
(if equipped)
Output
ON or
START
Lighting switch
must be in the
2nd position
(LOW beam is
ON) and the front
fog lamp switch
OFF
0V
ON
Battery voltage
52
L
LH low beam head-
lamp
Output
—
Lighting switch in 2nd position
Battery voltage
54
R/Y
RH low beam head-
lamp
Output
—
Lighting switch in 2nd position
Battery voltage
55
G
LH high beam head-
lamp
Output
—
Lighting switch in 2nd position and
placed in HIGH or PASS position
Battery voltage
56
Y
(With DTRL)
L/W
(Without DTRL)
RH high beam head-
lamp
Output
—
Lighting switch in 2nd position and
placed in HIGH or PASS position
Battery voltage
57
R/L
Parking, license and
tail lamp
Output
ON
Lighting switch
1st position
OFF
0V
ON
Battery voltage
59
B
Ground
Input
—
—
0V
60
B/W
Rear window defog-
ger relay (if
equipped)
Output
ON or
START
Rear defogger switch ON
Battery voltage
Rear defogger switch OFF
0V
61
BR
Fuse 32
Output
OFF
—
Battery voltage
Terminal
Wire
color
Signal name
Signal
input/
output
Measuring condition
Reference value
(Approx.)
Igni-
tion
switch
Operation or condition
Control part
Fail-safe in operation
Headlamp
• Turns ON the headlamp low relay when the ignition switch is turned ON
• Turns OFF the headlamp low relay when the ignition switch is turned OFF
• Headlamp high relay OFF
• Parking lamps
• License plate lamps
• Tail lamps
• Turns ON the tail lamp relay when the ignition switch is turned ON
• Turns OFF the tail lamp relay when the ignition switch is turned OFF
Front wiper
• The status just before activation of fail-safe control is maintained until the ignition
switch is turned OFF while the front wiper is operating at LO or HI speed.
• The wiper is operated at LO speed until the ignition switch is turned OFF if the fail-
safe control is activated while the front wiper is set in the INT mode and the front wiper
motor is operating.
Rear window defogger (if equipped)
Rear window defogger relay OFF
IPDM E/R (INTELLIGENT POWER DISTRIBUTION MODULE ENGINE ROOM)
SEC-53
< ECU DIAGNOSIS INFORMATION >
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IGNITION RELAY MALFUNCTION DETECTION FUNCTION
• IPDM E/R monitors the voltage at the contact circuit and excitation coil circuit of the ignition relay inside it.
• IPDM E/R judges the ignition relay error if the voltage differs between the contact circuit and the excitation
coil circuit.
• If the ignition relay cannot turn OFF due to contact seizure, it activates the tail lamp relay for 10 minutes to
alert the user to the ignition relay malfunction when the ignition switch is turned OFF.
NOTE:
The tail lamp turns OFF when the ignition switch is turned ON.
FRONT WIPER CONTROL
IPDM E/R detects front wiper stop position by a front wiper auto stop signal.
When a front wiper auto stop signal is in the conditions listed below, IPDM E/R stops power supply to wiper
after repeating a front wiper 10 seconds activation and 20 seconds stop five times.
NOTE:
This operation status can be confirmed on the IPDM E/R “DATA MONITOR” that displays “Block” for the item
“WIP PROT” while the wiper is stopped.
STARTER MOTOR PROTECTION FUNCTION
IPDM E/R turns OFF the starter control relay to protect the starter motor when the starter control relay remains
active for 90 seconds.
DTC Index
INFOID:0000000009878910
NOTE:
The details of TIME display are as follows.
• CRNT: The malfunctions that are detected now
• 1 - 39: The number is indicated when it is normal at present and a malfunction was detected in the past. It
increases like 0
→ 1 → 2 ··· 38 → 39 after returning to the normal condition whenever IGN OFF → ON. It is
fixed to 39 until the self-diagnosis results are erased if it is over 39. It returns to 0 when a malfunction is
detected again in the process.
A/C compressor
A/C relay OFF
Front fog lamps (if equipped)
Front fog lamp relay OFF
Control part
Fail-safe in operation
Ignition switch
Ignition relay
Tail lamp relay
ON
ON
—
OFF
OFF
—
Ignition switch
Front wiper switch
Auto stop signal
ON
OFF
Front wiper stop position signal cannot be
input 10 seconds.
ON
The signal does not change for 10 seconds.
CONSULT display
Fail-safe
TIME
NOTE
Refer to
No DTC is detected.
further testing
may be required.
—
—
—
—
U1000: CAN COMM CIRCUIT
×
CRNT
1 – 39
SEC-54
< WIRING DIAGRAM >
VEHICLE SECURITY SYSTEM
WIRING DIAGRAM
VEHICLE SECURITY SYSTEM
Wiring Diagram
INFOID:0000000009878911
ABKWA1911GB
VEHICLE SECURITY SYSTEM
SEC-55
< WIRING DIAGRAM >
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ABKWA1912GB
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