2008 NISSAN LATIO ignition

LAN-128
< COMPONENT DIAGNOSIS >[CAN SYSTEM (TYPE 9)]
EPS BRANCH LINE CIRCUIT
EPS BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000001711508
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the EPS control unit for damage, bend and loose connection (unit
side and connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of EPS control unit.
2. Check the resistance between the EPS control unit harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the EPS control unit branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the EPS control unit. Refer to STC-14, "
DTC C1601 BAT-
TERY VOLT".
Is the inspection result normal?
YES (Present error)>>Replace the EPS control unit. Refer to PS-9, "Removal and Installation".
YES (Past error)>>Error was detected in the EPS control unit branch line.
NO >> Repair the power supply and the ground circuit.
EPS control unit harness connector
Resistance (Ω)
Connector No. Terminal No.
M53 9 16 Approx. 54 – 66

M&A BRANCH LINE CIRCUIT
LAN-129
< COMPONENT DIAGNOSIS >[CAN SYSTEM (TYPE 9)]
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M&A BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000001711510
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the combination meter for damage, bend and loose connection
(unit side and connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of combination meter.
2. Check the resistance between the combination meter harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the combination meter branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the combination meter. Refer to DI-15, "
Power Supply and
Ground Circuit Inspection".
Is the inspection result normal?
YES (Present error)>>Replace the combination meter. Refer to DI-20, "Removal and Installation".
YES (Past error)>>Error was detected in the combination meter branch line.
NO >> Repair the power supply and the ground circuit.
Combination meter harness connector
Resistance (Ω)
Connector No. Terminal No.
M24 1 2 Approx. 54 – 66

LAN-130
< COMPONENT DIAGNOSIS >[CAN SYSTEM (TYPE 9)]
ABS BRANCH LINE CIRCUIT
ABS BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000001711513
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend
and loose connection (unit side and connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of ABS actuator and electric unit (control unit).
2. Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi-
nals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the ABS actuator and electric unit (control unit) branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to
BRC-27, "
ABS Control Unit Power and Ground Systems Inspection".
Is the inspection result normal?
YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to BRC-35, "Removal
and Installation".
YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.
NO >> Repair the power supply and the ground circuit.
ABS actuator and electric unit (control unit) harness connector
Resistance (Ω)
Connector No. Terminal No.
E33 26 15 Approx. 54 – 66

TCM BRANCH LINE CIRCUIT
LAN-131
< COMPONENT DIAGNOSIS >[CAN SYSTEM (TYPE 9)]
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TCM BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000001711514
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the terminals and connector of the TCM for damage, bend and loose connection (unit side and
connector side).
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of TCM.
2. Check the resistance between the TCM harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the TCM branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the TCM. Refer to the following.
• A/T models: AT-165, "
Diagnosis Procedure"
• CVT models: CVT-123, "Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the TCM. Refer to the following.
• A/T models: AT-202, "
Removal and Installation"
• CVT models: CVT-161, "Removal and Installation"
YES (Past error)>>Error was detected in the TCM branch line.
NO >> Repair the power supply and the ground circuit.
TCM harness connector
Resistance (Ω)
Connector No. Terminal No.
E31 5 6 Approx. 54 – 66

LAN-132
< COMPONENT DIAGNOSIS >[CAN SYSTEM (TYPE 9)]
IPDM-E BRANCH LINE CIRCUIT
IPDM-E BRANCH LINE CIRCUIT
Diagnosis ProcedureINFOID:0000000001711515
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
- IPDM E/R
- Harness connector E7 (Models without ABS)
- Harness connector M69 (Models without ABS)
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of IPDM E/R.
2. Check the resistance between the IPDM E/R harness connector terminals.
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the IPDM E/R branch line.
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the IPDM E/R. Refer to PG-25, "
IPDM E/R Power/Ground
Circuit Inspection".
Is the inspection result normal?
YES (Present error)>>Replace the IPDM E/R. Refer to PG-26, "Removal and Installation of IPDM E/R".
YES (Past error)>>Error was detected in the IPDM E/R branch line.
NO >> Repair the power supply and the ground circuit.
IPDM E/R harness connector
Resistance (Ω)
Connector No. Terminal No.
E46 41 40 Approx. 108 – 132

CAN COMMUNICATION CIRCUIT
LAN-133
< COMPONENT DIAGNOSIS >[CAN SYSTEM (TYPE 9)]
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CAN COMMUNICATION CIRCUIT
Diagnosis ProcedureINFOID:0000000001711516
INSPECTION PROCEDURE
1.CONNECTOR INSPECTION
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect all the unit connectors on CAN communication system.
4. Check terminals and connectors for damage, bend and loose connection.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector terminals.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Check the harness and repair the root cause.
3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
Check the continuity between the data link connector and the ground.
Is the inspection result normal?
YES >> GO TO 4.
NO >> Check the harness and repair the root cause.
4.CHECK ECM AND IPDM E/R TERMINATION CIRCUIT
1. Remove the ECM and the IPDM E/R.
2. Check the resistance between the ECM terminals.
3. Check the resistance between the IPDM E/R terminals.
Is the measurement value within the specification?
YES >> GO TO 5.
NO >> Replace the ECM and/or the IPDM E/R.
5.CHECK SYMPTOM
Data link connector
Continuity
Connector No. Terminal No.
M22 6 14 Not existed
Data link connector
GroundContinuity
Connector No. Terminal No.
M226 Not existed
14 Not existed
ECM
Resistance (Ω)
Te r m i n a l N o .
84 83 Approx. 108 – 132
IPDM E/R
Resistance (Ω)
Te r m i n a l N o .
41 40 Approx. 108 – 132
LKIA0037E

LAN-134
< COMPONENT DIAGNOSIS >[CAN SYSTEM (TYPE 9)]
CAN COMMUNICATION CIRCUIT
Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with
customer)” are reproduced.
Inspection result
Reproduced>>GO TO 6.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is
detected.
6.CHECK UNIT REPRODUCTION
Perform the reproduction test as per the following procedure for each unit.
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Disconnect one of the unit connectors of CAN communication system.
NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first.
4. Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom
(Results from interview with customer)” are reproduced.
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms.
Inspection result
Reproduced>>Connect the connector. Check other units as per the above procedure.
Non-reproduced>>Replace the unit whose connector was disconnected.

MAIN LINE BETWEEN DLC AND TCM CIRCUIT
LAN-135
< COMPONENT DIAGNOSIS >[CAN SYSTEM (TYPE 10)]
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COMPONENT DIAGNOSIS
MAIN LINE BETWEEN DLC AND TCM CIRCUIT
Diagnosis ProcedureINFOID:0000000001711523
INSPECTION PROCEDURE
1.CHECK CONNECTOR
1. Turn the ignition switch OFF.
2. Disconnect the battery cable from the negative terminal.
3. Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
- Harness connector M69
- Harness connector E7
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector.
2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the harness connectors M69 and E7.
2. Check the continuity between the data link connector and the harness connector.
Is the inspection result normal?
YES >> GO TO 3.
NO >> Repair the main line between the data link connector and the harness connector M69.
3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the connector of TCM.
2. Check the continuity between the harness connector and the TCM.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the data link connector and the TCM.
NO >> Repair the main line between the harness connector E7 and the TCM.
Data link connector Harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
M226
M6932A Existed
14 31A Existed
Harness connector TCM harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
E732A
E315 Existed
31A 6 Existed