PINPOINT TEST E : ONE OR BOTH HEATED EXTERIOR MIRRORS IS INOPERATIVE OR ALWAYS ON
(WITH MEMORY MIRRORS)
NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may cause damage to the connector. Use only Rotunda Flex Probes (NUD105- R025D)
NOTICE: The following step uses a test lamp to simulate normal circuit loads. To avoid connector terminal damage, use the Rotunda Flex Probe kit for the test lamp probe connection to the vehicle. Do not use the test lamp probe directly on any connector.
E1 CHECK THE DDM (DRIVER DOOR MODULE) OR PDM (PASSENGER DOOR MODULE) DIAGNOSTIC TROUBLE CODES (DTCS)
Ignition ON. Using a diagnostic scan tool, perform the DDM ( LH heated exterior mirror inoperative or always on) or PDM ( RH heated exterior mirror is inoperative or always on) self-test.
Are any Diagnostic Trouble Codes (DTCs) present?
Yes | For DDM DTC B1163:11 or PDM DTC B1164:11, GO to E7 For DDM DTC B1163:15 or PDM DTC B1164:15, GO to E3 For all other DDM or PDM Diagnostic Trouble Codes (DTCs), REFER to: Locks, Latches and Entry Systems (501-14 Handles, Locks, Latches and Entry Systems, Diagnosis and Testing). |
|---|---|
No | GO to E2 |
E2 VERIFY THE OPERATION OF THE REAR WINDOW DEFROST SYSTEM
Start the engine. With the engine running, activate the rear window defrost. Using an infrared temperature gun or equivalent, measure the temperature of the rear window for approximately 30 seconds, noting changes in temperature.
Did the temperature of the rear window glass rise?
Yes | GO to E3 |
|---|---|
No | DIAGNOSE the rear window defrost system prior to continuing diagnostics for the heated exterior mirrors. REFER to: Glass, Frames and Mechanisms (501-11 Glass, Frames and Mechanisms, Diagnosis and Testing). |
E3 CHECK THE EXTERIOR MIRROR HEATER OUTPUT VOLTAGE AT THE INOPERATIVE EXTERIOR MIRROR
Ignition OFF. Disconnect: Inoperative Exterior Mirror C520 or C626. Start the engine. Connect:
Click to display connectors
LH Exterior Mirror
Lead 1 | Measurement / Action | Lead 2 |
|---|---|---|
C520-6 | C520-7 |
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.