Nissan Note [1848/1872] Dtc p0685 ecm relay

Nissan Note [1848/1872] Dtc p0685 ecm relay
EC-1848
[K9K]
DTC P0685 ECM RELAY
3. CHECK ECM POWER SUPPLY CIRCUIT-III
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E7.
3. Check harness continuity between ECM terminals 109, 110 and IPDM E/R terminal 32.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> GO TO 4.
4. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E48, F101
Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
5. CHECK ECM POWER SUPPLY CIRCUIT-IV
1. Disconnect ECM harness connector.
2. Disconnect IPDM E/R harness connector E7.
3. Check harness continuity between ECM terminal 104 and IPDM E/R terminal 29 under the following con-
ditions.
Refer to Wiring Diagram.
4. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> GO TO 6.
6. DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E48, F101
Diode E64
Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
Continuity should exist.
CONDITION 1: Continuity should exist.
CONDITION 2: Continuity should not exist.
MBIB1559E

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