Nissan Maxima Service and Repair Manual: Power supply and ground circuit

Nissan Maxima Service and Repair Manual / Body interior / Seat / DTC/circuit diagnosis / Power supply and ground circuit

CLIMATE CONTROLLED SEAT CONTROL UNIT

CLIMATE CONTROLLED SEAT CONTROL UNIT : Diagnosis Procedure

Regarding Wiring Diagram information, refer to SE-44, "Wiring Diagram".

1.CHECK FUSES

2.CHECK BATTERY POWER SUPPLY CIRCUIT

  1. Turn ignition switch OFF.
  2. Disconnect climate controlled seat control unit connector B217.
  3. Check voltage between climate controlled seat control unit connector B217 terminal 29 and ground.

 

3.CHECK IGNITION POWER SUPPLY CIRCUIT

  1. Disconnect climate controlled seat control unit connector B216.
  2. Check voltage between climate controlled seat control unit connector B216 terminal 21 and ground.

 

4.CHECK GROUND CIRCUIT

  1. Turn ignition switch OFF.
  2. Check continuity between climate controlled seat control unit connector B217 terminal 30 and ground.

5.CHECK CLIMATE CONTROLLED SEAT RELAY

Perform the climate controlled seat relay component inspection. Refer to SE-10, "CLIMATE CONTROLLED SEAT CONTROL UNIT : Component Inspection (Climate Controlled Seat Relay)".

6.CHECK CIRCUIT BREAKER POWER SUPPLY CIRCUIT

  1. Disconnect the circuit breaker connector M84.
  2. Check voltage between circuit breaker connector M84 terminal 1 and ground.

7.CHECK BATTERY POWER SUPPLY CIRCUIT FOR OPEN

Check continuity between circuit breaker connector M84 (A) terminal 2 and climate controlled seat control unit connector B217 (B) terminal 29.

8.CHECK CLIMATE CONTROLLED SEAT RELAY BATTERY POWER SUPPLY CIRCUIT

  1. Disconnect climate controlled seat relay connector.
  2. Check voltage between climate controlled seat relay connector M58 terminal 3 and ground.

9.CHECK CLIMATE CONTROLLED SEAT RELAY IGNITION POWER SUPPLY CIRCUIT

Check voltage between climate controlled seat relay connector M58 terminal 2 and ground.

10.CHECK IGNITION POWER SUPPLY CIRCUIT FOR OPEN

Check continuity between climate controlled seat relay connector M58 (A) terminal 5 and climate controlled seat control unit connector B216 (B) terminal 21.

11.CHECK CLIMATE CONTROLLED SEAT RELAY GROUND CIRCUIT

Check continuity between climate controlled seat relay connector M58 terminal 1 and ground.

CLIMATE CONTROLLED SEAT CONTROL UNIT : Component Inspection (Climate Controlled Seat Relay)

1.CHECK CLIMATE CONTROLLED SEAT RELAY

  1. Apply battery voltage between terminals 2 and 1 of the climate controlled seat relay. CAUTION: Connect a fuse between the terminals when applying battery voltage.
  2. Check continuity between climate controlled seat relay terminals 5 and 3.

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