Nissan Frontier. Instruction — part 969
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< BASIC INSPECTION >
[CAN FUNDAMENTAL]
DIAGNOSIS AND REPAIR WORKFLOW
Reception item of “IPDM E/R”: On “ECM”, “OK” is indicated. IPDM-E communicates normally with ECM.
Put a check mark on the normal circuit between ECM and IPDM-E (check mark 3-b in the figure below).
4. Through the above procedure, the error is detected in the TCM branch line (shaded in the figure below).
NOTE:
For abbreviations, refer to
.
JSMIA0817GB
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DIAGNOSIS AND REPAIR WORKFLOW
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< BASIC INSPECTION >
[CAN FUNDAMENTAL]
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5. Perform the inspection for the detected error circuit. For the inspection procedure, refer to “MALFUNC-
TION AREA CHART”.
Present Error — Short Circuit —
When the symptoms listed below exist, a short circuit of the CAN communication line is a possible cause.
Received data
Error symptom
• Most the units connected to the CAN communication system go into fail-safe mode or are deactivated.
Inspection procedure
PKID1219E
Item (CONSULT)
Indication
SELF-DIAG RESULTS
All Diag on CAN units are not indicated.
CAN DIAG SUPPORT MNTR
“UNKWN” is indicated under “TRANSMIT DIAG” and most reception items.
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< BASIC INSPECTION >
[CAN FUNDAMENTAL]
DIAGNOSIS AND REPAIR WORKFLOW
• Refer to “MALFUNCTION AREA CHART”.
Past Error — Open Circuit —
Review CAN communication signal chart based on information received from the interview with the customer
and on past error information from SELF-DIAG RESULTS and CAN DIAG SUPPORT MNTR.
JSMIA0818GB
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DIAGNOSIS AND REPAIR WORKFLOW
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< BASIC INSPECTION >
[CAN FUNDAMENTAL]
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1. SELF-DIAG RESULTS: Inspect the control units indicating “U1000” or “U1001” on SELF-DIAG RESULTS.
2. CAN DIAG SUPPORT MNTR (with PAST): Check the CAN DIAG SUPPORT MNTR (with PAST) of units
indicating “U1000” or “U1001” on SELF-DIAG RESULTS. Draw a line on the diagnosis sheet to indicate
the possible error circuit.
NOTE:
For the details of each indication on CAN DIAG SUPPORT MNTR, refer to
.
a. Reception item of “ENGINE”: “VDC/TCS/ABS”, “3” is indicated in the “PAST”. This means ECM could not
receive the signal from ABS in the past. Draw a line between ECM and ABS (line 2-a in the figure below).
b. Reception item of “METER/M&A”: “VDC/TCS/ABS”, “3” is indicated in the “PAST”. This means M&A could
not receive the signal from ABS in the past. Draw a line between M&A and ABS (line 2-b in the figure
below).
JSMIA0819GB
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