2003 NISSAN ALMERA N16 ecm

SEL807Y
INSPECTIONNJEL0540S04Proceed trouble diagnosis according to the check sheet results (example).
Case 1: Replace ECM.
Case 2: Replace TCM.
Case 3: Replace smart entrance control unit.
Case 4: Check harness between TCM and smart entrance control unit. Refer to“CIRCUIT CHECK BETWEEN
TCM AND SMART ENTRANCE CONTROL UNIT” (EL-519).
Case 5: Check ECM circuit. Refer to “ECM CIRCUIT CHECK” (EL-522).
Case 6: Check TCM circuit. Refer to “TCM CIRCUIT CHECK” (EL-523).
Case 7: Check smart entrance control unit circuit. Refer to “SMART ENTRANCE CONTROL UNIT CIRCUIT
CHECK” (EL-524).
Case 8: Check combination meter circuit. Refer to “COMBINATION METER CIRCUIT CHECK” (EL-525).
Case 9: Check CAN communication circuit. Refer to “CAN COMMUNICATION CIRCUIT CHECK” (EL-525).
CAN SYSTEM (TYPE 1)
Trouble Diagnoses (Cont’d)
EL-518

ECM CIRCUIT CHECK=NJEL0540S06
1 CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery cable.
3. Check the terminals and connector of ECM for damage, bend and loose connection (control module-side and harness-
side).
OK or NG
OK GO TO 2.
NG Repair terminal or connector.
2 CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check resistance between ECM harness connector F114 terminals 94 (L) and86(R).
SEL812Y
OK or NG
OK Replace ECM.
NG Repair harness between ECM and TCM.
CAN SYSTEM (TYPE 1)
Trouble Diagnoses (Cont’d)
EL-522

COMBINATION METER CIRCUIT CHECK=NJEL0540S09
1 CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery cable.
3. Check following terminals and connector of combination meter for damage, bend and loose connection (meter-side and
harness-side).
OK or NG
OK GO TO 2.
NG Repair terminal or connector.
2 CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect combination meter connector.
2. Check resistance between combination meter harness connector M171 terminals 26 (L) and 27 (R).
SEL815Y
OK or NG
OK Replace combination meter.
NG Repair harness between combination meter and smart entrance control unit.
CAN COMMUNICATION CIRCUIT CHECKNJEL0540S10
1 CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery cable.
3. Check following terminals and connector of combination meter for damage, bend and loose connection (meter-side,
control unit-side, control module-side and harness-side).
Combination meter
Smart entrance control unit
TCM
ECM
Between ECM and data link connector
OK or NG
OK GO TO 2.
NG Repair terminal or connector.
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CAN SYSTEM (TYPE 1)
Trouble Diagnoses (Cont’d)
EL-525

6 CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect ECM connector and TCM connector.
2. Check continuity between ECM harness connector F114 terminals 94 (L) and86(R).
SEL820Y
OK or NG
OK GO TO 7.
NG Repair harness between ECM and harness connector F115 (LHD models) or F43 (RHD
models).
Repair harness between ECM and TCM.
7 CHECK HARNESS FOR SHORT CIRCUIT
Check continuity between ECM harness connector F114 terminals 94 (L), 86 (R) and ground.
SEL821Y
OK or NG
OK GO TO 8.
NG Repair harness between ECM and harness connector F115 (LHD models) or F43 (RHD
models).
Repair harness between ECM and TCM.
8 ECM/COMBINATION METER INTERNAL CIRCUIT INSPECTION
Check components inspection. Refer to “ECM/COMBINATION METER INTERNAL CIRCUIT INSPECTION” (EL-529).
OK or NG
OK Reconnect all connectors to perform “SELF-DIAG RESULTS” and “DATA MONITOR” for
“ENGINE”, “A/T” and “SMART ENTRANCE” displayed on CONSULT-II. Refer to thefol-
lowing.
“DTC U1000, U1001 CAN COMMUNICATION LINE” (WITH EURO-OBD) (EC-116) for
“ENGINE”
“DTC U1000, U1001 CAN COMMUNICATION LINE” (WITHOUT EURO-OBD) (EC-
492) for “ENGINE”
“DTC U1000 CAN COMMUNICATION LINE” (WITH EURO-OBD) (AT-192) for “A/T”
“CAN COMMUNICATION LINE” (All) (AT-395) for “A/T”
“CAN Communication Line Check” (EL-380) for “SMART ENTRANCE”
NG Replace ECM and/or combination meter.
CAN SYSTEM (TYPE 1)
Trouble Diagnoses (Cont’d)
EL-528

SEL723Y
Component InspectionNJEL0541ECM/COMBINATION METER INTERNAL CIRCUIT
INSPECTION
NJEL0541S01Remove ECM and combination meter from vehicle.
Check resistance between ECM terminals 94 and 86.
Check resistance between combination meter terminals 26
and 27.
Unit Terminal Resistance value (Ω)
ECM 94 - 86
Approx. 108 - 132
Combination meter 26 - 27
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CAN SYSTEM (TYPE 1)
Component Inspection
EL-529

CHECK SHEET RESULTS (EXAMPLE)NJEL0545S03
SEL824Y
INSPECTIONNJEL0545S04Proceed trouble diagnosis according to the check sheet results (example).
Case 1: Replace ECM.
Case 2: Replace smart entrance control unit.
Case 3: Check ECM circuit. Refer to “ECM CIRCUIT CHECK” (EL-536).
Case 4: Check smart entrance control unit circuit. Refer to “SMART ENTRANCE CONTROL UNIT CIRCUIT
CHECK” (EL-537).
Case 5: Check combination meter circuit. Refer to “COMBINATION METER CIRCUIT CHECK” (EL-538).
Case 6: Check CAN communication circuit. Refer to “CAN COMMUNICATION CIRCUIT CHECK” (EL-539).
GI
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CAN SYSTEM (TYPE 2)
Trouble Diagnoses (Cont’d)
EL-535

ECM CIRCUIT CHECKNJEL0545S05
1 CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery cable.
3. Check following terminals and connector for damage, bend and loose connection (control module-side and harness-
side).
LHD models
ECM
Harness connector F115
Harness connector M202
RHD models
ECM
Harness connector F43
Harness connector E225
Harness connector E174
Harness connector M159
OK or NG
OK GO TO 2.
NG Repair terminal or connector.
2 CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect ECM connector.
2. Check resistance between ECM harness connector F114 terminals 94 (L) and86(R).
SEL812Y
OK or NG
OK Replace ECM.
NG Repair harness between ECM and smart entrance control unit.
CAN SYSTEM (TYPE 2)
Trouble Diagnoses (Cont’d)
EL-536

CAN COMMUNICATION CIRCUIT CHECK=NJEL0545S08
1 CHECK CONNECTOR
1. Turn ignition switch OFF.
2. Disconnect the negative battery cable.
3. Check following terminals and connector for damage, bend and loose connection (meter-side, control unit-side, control
module-side and harness-side).
Combination meter
Smart entrance control unit
ECM
Between ECM and smart entrance control unit
OK or NG
OK GO TO 2.
NG Repair terminal or connector.
2 CHECK HARNESS FOR SHORT CIRCUIT
1. Disconnect combination meter connector, smart entrance control unit connector and harness connector M202 (LHD
models) or harness connector M159 (RHD models).
2. Check continuity between data link connector M29 terminals 6 (L) and 3 (R).
SEL816Y
OK or NG
OK GO TO 3.
NG Repair harness between data link connector and harness connector M202 (LHD mod-
els) or M159 (RHD models).
Repair harness between data link connector and smart entrance control unit.
Repair harness between data link connector and combination meter.
GI
MA
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LC
EC
FE
CL
MT
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RS
BT
HA
SC
IDX
CAN SYSTEM (TYPE 2)
Trouble Diagnoses (Cont’d)
EL-539