Nissan Juke Service and Repair Manual : Power supply and ground circuit
Diagnosis Procedure
1.CHECK FUSE
Is the fuse fusing? YES >> Replace the fuse after repairing the applicable circuit.
NO >> GO TO 2.
2.CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E21 and E38. Refer to GI-44, "Circuit Inspection".
Is the inspection result normal? YES >> GO TO 3.
NO >> Repair or replace ground connection.
3.CHECK ECM GROUND CIRCUIT
1. Disconnect ECM harness connectors.
2. Check the continuity between ECM harness connector and ground.
Is the inspection result normal? YES >> GO TO 4.
NO >> Repair or replace error-detected parts.
4.CHECK ECM POWER SUPPLY (MAIN)-I
1. Reconnect ECM harness connector.
2. Turn ignition switch ON.
3. Check the voltage between ECM harness connector terminals.
Is the inspection result normal? YES >> GO TO 5.
NO >> GO TO 6.
5.CHECK ECM POWER SUPPLY (MAIN)-II
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Check the voltage between ECM harness connector terminals as per the following.
Is the inspection result normal? YES >> GO TO 9.
NO >> GO TO 7.
6.CHECK ECM POWER SUPPLY (MAIN) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connectors.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between ECM harness connector and IPDM E/R harness connector.
5. Also check harness for short to ground.
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
7.CHECK ECM RELAY CONTROL SIGNAL
Check the voltage between ECM harness connector terminals as per the following.
Is the inspection result normal? YES >> Check Intermittent Incident. Refer to GI-42, "Intermittent Incident".
NO >> GO TO 8.
8.CHECK ECM RELAY CONTROL SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between ECM harness connector and IPDM E/R harness connector.
5. Also check harness for short to ground and to power.
Is the inspection result normal? YES >> Replace IPDM E/R. Refer to PCS-34, "Removal and Installation".
NO >> Repair or replace error-detected parts.
9.CHECK IGNITION SWITCH SIGNAL
Is the inspection result normal? YES >> GO TO 11.
NO >> GO TO 10.
10.CHECK IGNITION SWITCH SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between ECM harness connector and IPDM E/R harness connector.
5. Also check harness for short to ground and to power.
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
11.CHECK ECM POWER SUPPLY (BACK-UP)
Check the voltage between ECM harness connector terminals.
Is the inspection result normal? YES >> Check Intermittent Incident. Refer to GI-42, "Intermittent Incident".
NO >> GO TO 12.
12.CHECK ECM POWER SUPPLY (BACK-UP) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between ECM harness connector and IPDM E/R harness connector.
5. Also check harness for short to ground.
Is the inspection result normal? YES >> Perform the trouble diagnosis for power supply circuit.
NO >> Repair or replace error-detected parts.
Other materials:
Traction AA, A, B and C
The traction grades, from highest to lowest, are AA, A, B and C. Those grades
represent the tire’s ability to stop on wet pavement as measured under controlled
conditions on specified government test surfaces of asphalt and concrete. A tire
marked C may have poor traction performance.
WARNING ...
Precaution Necessary for Steering Wheel Rotation after Battery Disconnect
NOTE:
• Before removing and installing any control units, first turn the ignition
switch to the LOCK position, then disconnect
both battery cables.
• After finishing work, confirm that all control unit connectors are connected
properly, then re-connect both
battery cables.
• Always use CONS ...
ACC warning does not operate
Diagnosis Procedure
1.CHECK COMBINATION METER BUZZER
Check combination meter buzzer.
Refer to WCS-40, "Component Function Check".
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace the malfunctioning parts.
2.REPLACE BCM
1. Replace BCM. Ref ...