Check Parking Brake Switch Circuit

WARNING: This page is about a different car, the 2006 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK BRAKE INDICATOR
1. Turn ignition switch ON.
2. When parking brake is made ON/OFF, it checks whether the brake indicator lamp of combination meter lights up/puts out the light.
OK or NG

OK: INSPECTION END

NG: GO TO 2.

CHECK PARKING BRAKE SWITCH SIGNAL

Turn ignition switch ON.

Check voltage between parking brake switch harness connector and ground, when parking brake is released.

VOLTAGE REFERENCE CHART

(+)

(-)

Condition

Voltage

Parking brake switch connector

Terminal

E110 ⁽¹⁾, B37 ⁽²⁾

Ground

Not released

Approx. 0 V

Released

Battery voltage

⁽¹⁾

with A/T

⁽²⁾

with M/T

Fig 1: Identifying Voltage Between Parking Brake Switch Harness Connector And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG

OK: GO TO 3

NG: Replace parking brake switch.

CHECK PARKING BRAKE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect parking brake switch connector and combination meter connector.
3. Check continuity between combination meter harness connector (A) M20 terminal 43 and parking brake switch harness connector (B) E110 *¹ , B37 *² terminal 1.
  43 - 1: Continuity should exist .
  
  *1: with A/T,
  
  *2: with M/T
  
  Fig 2: Identifying Continuity Between Combination Meter (A) M20 Terminal 43 And Parking Brake Switch (B) E110, B37 Terminal 1
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG

OK: INSPECTION END

NG: Repair harness or connector.