ford Workshop Repair Guides

Ford Workshop Service and Repair Manuals

414 Battery and Charging System > < Warning Devices - Vehicles Built From: 01-2005, Vehicles Without: Generic Electronic Module (GEM)
Warning Devices - Warning Devices—Vehicles With: Generic Electronic Module (GEM) Streetka 2003.5 (01/2003-07/2005)
Diagnosis and Testing

Refer to Wiring Diagrams Section 413-09, 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

Mechanical Electrical
  • Interior lamp switch
  • Headlamp switch
  • Fuse(s)
  • Wiring harness
  • Electrical connector(s)
  • Interior lamp switch
  • Headlamp switch
  • Generic electronic module (GEM)
  • Central junction box (CJB)
  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 Chart

Symptom Possible Sources Action
The headlamp ON reminder chime is inoperative/does not operate correctly
*
Fuse.
*
Circuit.
*
Headlamp switch.
*
Interior lamp switch.
*
CJB.
*
Lights-ON-warning module.
*
GO to Pinpoint Test A.

Pinpoint Tests

PINPOINT TEST A : THE HEADLAMPS ON REMINDER CHIME IS INOPERATIVE/DOES NOT OPERATE CORRECTLY

TEST CONDITIONS DETAILS/RESULTS/ACTIONS
A1: CHECK CIRCUIT 29S-WA9 (OG/BK) FOR VOLTAGE
1
Disconnect GEM C172.
2
Place the headlamp switch in the LOW BEAM position.

3
Measure the voltage between the GEM C172 pin 9, circuit 29S-WA9 (OG/BK), harness side and ground.

Is the voltage greater than 10 volts?
Yes
No
A2: CHECK CIRCUIT 29S-DA1 (OG/YE) FOR OPEN

1
Measure the resistance between the GEM C172 pin 9, circuit 29S-DA1 (OG/YE), and the number 6 fuse holder in the CJB.

Is the resistance less than 5 ohms?
Yes
No
REPAIR the circuit. TEST the system for normal operation.
A3: CHECK CJB FOR OPEN
1
Disconnect Fuse 6.

2
Measure the resistance between the electrical connectors for fuse 6 within the CJB

Is the resistance less than 5 ohms?
Yes
No
INSTALL a new CJB. TEST the system for normal operation.
A4: CHECK CIRCUIT 29S-DB7 (OG/YE) FOR OPEN
1
Disconnect Headlamp Switch C102A.

2
Measure the resistance between the headlamp switch C102A pin 7, circuit 29S-DB7 (OG/YE), and the number 6 fuse holder in the CJB.

Is the resistance less than 5 ohms?
Yes
No
REPAIR the circuit. TEST the system for normal operation.
A5: TEST THE HEADLAMP SWITCH OUTPUT

1
Measure the voltage between the headlamp switch C102A pin 7, circuit 29S-DB7 (OG/YE), harness side and ground.

Is the voltage greater than 10 volts?
Yes
No
INSTALL a new headlamp switch. TEST the system for normal operation.
A6: CHECK THE DRIVER SIDE INTERIOR LAMP SWITCH CIRCUIT FOR OPEN
1
Disconnect Driver Side Interior Lamp Switch C124 (LHD) or C125 (RHD).

2
Measure the resistance between:
  • (LHD) the GEM C170 pin 18, circuit 31S-LC9 (BK/RD) and the driver side interior lamp switch C124 pin 1, harness side.
  • (RHD) the GEM C170 pin 19, circuit 31S-LC21 (BK/GN) and the driver side interior lamp switch C125 pin 1, harness side.

Is the resistance less than 5 ohms?
Yes
INSTALL a new GEM.
REFER to: Generic Electronic Module (GEM) (419-10 Multifunction Electronic Modules, Removal and Installation).
No
REPAIR circuit 31S-LC9 (BK/RD) or circuit 31S-LC21 (BK/GN). TEST the system for normal operation.

414 Battery and Charging System > < Warning Devices - Vehicles Built From: 01-2005, Vehicles Without: Generic Electronic Module (GEM)