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Parking, Rear and License Plate Lamps > < Stoplamps

Cougar 1999 (08.1998-01.2001)

Exterior Lighting - Turn Signal and Hazard Lamps Cougar 1999 (08/1998-01/2001)
Diagnosis and Testing

Refer to Wiring Diagrams Section 417-01, for schematic and connector information.

Inspection and Verification

  1. Verify the customer concern.
  1. Visually inspect for obvious signs of mechanical or electrical damage.

Visual Inspection Chart

Electrical
  • Fuse(s).
  • Wiring harness.
  • Switch(es).
  • Bulb(s).
  • Electrical connector(s).
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the cause is not visually evident, verify the symptom and refer to the Symptom Chart.

Symptom Chart

Symptom Possible Sources Action
The direction indicator lamps are inoperative/on continuously
*
Open/short circuit(s) (e.g. multifunction switch, direction indicator relay or anti theft module).
*
GO to Pinpoint Test L.

Pinpointtests

NOTE:
NOTE:Use a digital multimeter for all electrical measurements.

PINPOINT TEST A : THE DIRECTION INDICATOR LAMPS ARE INOPERATIVE/ON CONTINUOUSLY
TEST CONDITIONS DETAILS/RESULTS/ACTIONS
A1: CHECK CIRCUIT 15-LG25 (GN/BU) FOR VOLTAGE
1
Ignition switch in position 0.
2
Disconnect Multifunction switch C459.
3
Ignition switch in position II.

4
Measure the voltage between multifunction switch, connector C459, pin 11, circuit 15-LG25 (GN/BU), harness side and ground.

Is battery voltage indicated?
Yes
GO to A2.
No
REPAIR circuit 15-LG25 (GN/BU) by using the wiring diagrams. TEST the system for normal operation.
A2: CHECK MULTIFUNCTION SWITCH AND DIRECTION INDICATOR RELAY
1
Check the multifunction switch and direction indicator relay; refer to the multifunction switch and direction indicator relay component test.

Are multifunction switch and direction indicator relay OK?
Yes
GO to A3.
No
INSTALL a new multifunction switch or direction indicator relay. TEST the system for normal operation.
A3: CHECK MULTIFUNCTION SWITCH FOR GROUND

1
Measure the resistance between multifunction switch, connector C459, pin 7, circuit 31-LG25 (BK), harness side and ground.

Is the resistance less than 2 ohms?
Yes
GO to A4.
No
REPAIR circuit 31-LG25 (BK) by using the wiring diagrams. TEST the system for normal operation.
A4: DETERMINE THE INOPERATIVE LAMPS
1
Check which direction indicator lamps are inoperative.

Are the left-hand direction indicator lamps inoperative?
Yes
GO to A5.
No
The right-hand direction indicator lamps are malfunctioning: GO to A13.
A5: DETERMINE THE FAULT
1
Check the malfunction of the left-hand direction indicator lamps.

Are the left-hand direction indicator lamps on continuously?
Yes
GO to A7.
No
GO to A6.
A6: CHECK CIRCUIT 49S-LG1 (BU) FOR OPEN
1
Ignition switch in position 0.
2
Disconnect CJB C372.
3
Disconnect Multifunction switch C459.

4
Measure the resistance between multifunction switch, connector C459, pin 8, circuit 49S-LG1 (BU), harness side and CJB, connector C372, pin 9, circuit 49S-LG1 (BU), harness side.

Is the resistance less than 2 ohms?
Yes
INSTALL a new CJB. TEST the system for normal operation.
No
REPAIR circuit 49S-LG1 (BU) by using the wiring diagrams. TEST the system for normal operation.
A7: CHECK CJB, DIRECTION INDICATOR AND HAZARD LAMPS FOR SHORT TO POWER
1
Ignition switch in position 0.
2
Disconnect CJB C362.
3
Disconnect CJB C367.
4
Disconnect CJB C369.
5
Disconnect CJB C372.
6
Ignition switch in position II.

Are the left-hand direction indicator lamps inoperative?
Yes
GO to A8.
No
Left-hand direction indicator warning light on: CHECK circuit 49-LG15 (BU/BK) for short to power. If harness is OK INSTALL a new Instrument cluster. TEST the system for normal operation.
Left-hand front direction indicator is on continuously: CHECK circuit 49-LG13 (BU/RD) or 49-LG11 (BU/OG) for short to power. TEST the system for normal operation.
Left-hand rear direction indicator is on continuously: CHECK circuit 49-LG12 (BU) for short to power. TEST the system for normal operation.
A8: CHECK CJB FOR SHORT TO POWER
1
Ignition switch in position 0.
2
Connect CJB C367.
3
Ignition switch in position II.

Is the left-hand rear direction indicator lamp on?
Yes
INSTALL a new CJB. TEST the system for normal operation.
No
GO to A9.
A9: CHECK CJB FOR SHORT TO POWER
1
Ignition switch in position 0.
2
Connect CJB C369.
3
Ignition switch in position II.

Is the left-hand front direction indicator lamp on?
Yes
INSTALL a new CJB. TEST the system for normal operation.
No
GO to A10.
A10: CHECK CJB FOR SHORT TO POWERR
1
Ignition switch in position 0.
2
Connect CJB C362.
3
Ignition switch in position II.

Is the direction indicator warning light on?
Yes
INSTALL a new CJB. TEST the system for normal operation.
No
CHECK circuit 49S-LG1 (BU) for short to power. TEST the system for normal operation.
Vehicles with anti-theft system: GO to A11.
A11: CHECK ANTI-THEFT FLASHER RELAY
1
Ignition switch in position 0.
2
Connect Anti-theft flasher relay left-hand side C2107.
3
Ignition switch in position II.

Are the left-hand direction indicator lamps on?
Yes
CHECK circuit 49S-GL23 (BU/OG) for short to power. TEST the system for normal operation.
No
GO to A12.
A12: CHECK ANTI-THEFT MODULE
1
Ignition switch in position 0.
2
Connect Ant-theft flasher relay left-hand side C2107.
3
Disconnect Anti-theft module C451b.
4
Ignition switch in position II.

Are the left-hand direction indicator lamps on continuously?
Yes
CHECK circuit 31S-GL24 (BK/YE) for short to ground. If circuit is OK, INSTALL a new anti-theft flasher relay. TEST the system for normal operation.
No
INSTALL a new anti-theft module. TEST the system for normal operation.
A13: DETERMINE THE FAULT
1
Check the malfunction of the right-hand direction indicator lamps.

Are the right-hand direction indicator lamps on continuously?
Yes
GO to A15.
No
GO to A14.
A14: CHECK CIRCUIT 49S-LG2 (BU/RD) FOR OPEN
1
Ignition switch in position 0.
2
Disconnect Multifunction switch C459.
3
Disconnect CJB C372.

4
Measure the resistance between multifunction switch, connector C459, pin 9, circuit 49S-LG2 (BU/RD), harness side and CJB, connector C372, pin 8, circuit 49S-LG2 (BU/RD), harness side.

Is the resistance less than 2 ohms?
Yes
INSTALL a new CJB. TEST the system for normal operation.
No
REPAIR circuit 49S-LG2 (BU/RD) by using the wiring diagrams. TEST the system for normal operation.
A15: CHECK CJB, DIRECTION INDICATOR AND HAZARD LAMPS FOR SHORT TO POWER
1
Ignition switch in position 0.
2
Disconnect CJB C362.
3
Disconnect CJB C367.
4
Disconnect CJB C369.
5
Disconnect CJB C372.
6
Ignition switch in position II.

Are the right-hand direction indicator lamps inoperative?
Yes
GO to A16.
No
Right-hand direction indicator warning light is on continuously: CHECK circuit 49-LG22 (BU/YE) for short to power. If harness is OK, INSTALL a new instrument cluster. TEST the system for normal operation.
Right-hand front direction indicator lamp is on continuously: CHECK circuit 49-LG20 (BU/WH) or 49-LG18 (BU) for short to power. Test the system for normal operation.
Right-hand rear direction indicator lamp is on continuously: CHECK circuit 49-LG19 (BU/RD) for short to power. TEST the system for normal operation.
A16: CHECK CJB FOR SHORT TO POWER
1
Ignition switch in position 0.
2
Connect CJB C367.
3
Ignition switch in position II.

Is the right-hand rear direction indicator lamp on continuously?
Yes
INSTALL a new CJB. TEST the system for normal operation.
No
GO to A17.
A17: CHECK CJB FOR SHORT TO POWER
1
Ignition switch in position 0.
2
Connect CJB C369.
3
Ignition switch in position II.

Is the right-hand front direction indicator lamp on continuously?
Yes
INSTALL a new CJB. TEST the system for normal operation.
No
GO to A18.
A18: CHECK CJB FOR SHORT TO POWER
1
Ignition switch in position 0.
2
Connect CJB C362.
3
Ignition switch in position II.

Is the right-hand direction indicator warning light on continuously?
Yes
INSTALL a new CJB. TEST the system for normal operation.
No
CHECK circuit 49S-LG2 (BU/RD) for short to power. TEST the system for normal operation.
Vehicles with anti-theft system: GO to A19.
A19: CHECK ANTI-THEFT FLASHER RELAY
1
Ignition switch in position 0.
2
Disconnect Anti-theft flasher relay left-hand side C2107.
3
Ignition switch in position II.

Are the right-hand direction indicator lamps on continuously?
Yes
CHECK circuit 49S-GL25 (BU/WH) for short to power. TEST the system for normal operation.
No
GO to A20.
A20: CHECK ANTI-THEFT MODULE
1
Ignition switch in position 0.
2
Connect Anti-theft flasher relay left-hand side C2107.
3
Disconnect Anti-theft module C451b.
4
Ignition switch in position II.

Are the right-hand direction indicator lamps on continuously?
Yes
CHECK circuit 31S-GL24 (BK/YE) for short to ground. If circuit is OK, INSTALL a new anti-theft flasher relay. TEST the system for normal operation.
No
INSTALL a new anti-theft module. TEST the system for normal operation.

Parking, Rear and License Plate Lamps > < Stoplamps