Nissan Titan. Manual — part 264
P0550 PSP SENSOR
EC-357
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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Component Inspection
INFOID:0000000009886776
POWER STEERING PRESSURE SENSOR
1. Reconnect all harness connectors disconnected.
2. Start engine and let it idle.
3. Check voltage between ECM terminal 12 and ground under the
following conditions.
Condition
Voltage
Steering wheel: Being turned
0.5 - 4.5V
Steering wheel: Not being turned
0.4 - 0.8V
MBIB0126E
EC-358
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P0603 ECM
P0603 ECM
DTC Logic
INFOID:0000000010118756
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 11 V or more with ignition
switch ON.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON and wait at least 1 second.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Repeat step 1 and 2 for 10 times.
4. Turn ignition switch ON.
5. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010118757
1.
CHECK ECM POWER SUPPLY AND GROUND CIRCUIT
Perform trouble diagnosis for ECM power supply and ground circuit. Refer to
GI-39, "How to Check Terminal"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK INTERMITTENT INCIDENT
Check intermittent incident. Refer to
GI-42, "Intermittent Incident"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC confirmation procedure. Refer to
Is the 1st trip DTC P0603 displayed again?
YES
>> Replace ECM.
NO
>> INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0603
ECM BACK UP CIRCUIT
[Internal control module keep
alive memory (KAM) error]
• Malfunction in the internal back up RAM of ECM.
• Malfunction in the internal EEP-ROM system of
ECM.
• ECM power supply
• ECM
P0604 ECM
EC-359
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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P0604 ECM
DTC Logic
INFOID:0000000010118758
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 11 V or more with ignition
switch ON.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON (engine stopped) and wait least 20 minutes.
CAUTION:
Never start engine during this procedure.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010118759
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC confirmation procedure. Refer to
Is the 1st trip DTC P0604 displayed again?
YES
>> Replace ECM.
NO
>> INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0604
ECM
[Internal control module
random access memory
(RAM) error]
Malfunction in the internal RAM of ECM.
ECM
EC-360
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P0605 ECM
P0605 ECM
DTC Logic
INFOID:0000000010118760
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 11 V or more with ignition
switch ON.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON (engine stopped) and wait least 20 minutes.
CAUTION:
Never start engine during this procedure.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Turn ignition switch ON.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
.
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010118761
1.
PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Erase DTC.
3. Perform DTC confirmation procedure. Refer to
Is the 1st trip DTC P0605 displayed again?
YES
>> Replace ECM.
NO
>> INSPECTION END
DTC No.
CONSULT screen terms
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0605
ECM
[Internal control module
read only memory (ROM)
error]
Malfunction in the internal ROM of ECM.
ECM
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