Operation CHARM: Car repair manuals for everyone.
Home >> Ford >> 2008 >> Explorer 4WD V8-4.6L >> Repair and Diagnosis >> Body and Frame >> Mirrors >> Testing and Inspection >> Pinpoint Tests >> Test C: A Single Mirror Does Not Function With Switch Logic
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la
If it fails: lemon-manuals.org.ua

Or, hide this message: temporarily or permanently

Test C: A Single Mirror Does Not Function With Switch Logic

PINPOINT TEST C: A SINGLE MIRROR DOES NOT FUNCTION WITH SWITCH LOGIC

Normal Operation
The exterior mirror control switch controls the LH exterior mirror movement by switching voltage and ground to circuits CPM14 (GY/BN), CPM16 (BN/BU) and CPM23 (GY). The exterior mirror switch controls the RH exterior mirror movement by switching voltage and ground to circuits CPM18 (GN/BN), CPM19 (GY/OG) and CPM23 (GY).

Mirror Movement
- When the LH/RH exterior mirror motor receives ground through circuit CPM16 (BN/BU)/CPM19 (GY/OG) and power through circuit CPM23 (GY), the LH/RH exterior mirror will operate left.
- When the LH/RH exterior mirror motor receives power through circuit CPM16 (BN/BU)/CPM19 (GY/OG) and ground through circuit CPM23 (GY), the LH/RH exterior mirror will operate right.
- When the LH/RH exterior mirror motor receives ground through circuit CPM14 (GY/BN)/CPM18 (GN/BN) and power through circuit CPM23 (GY), the LH/RH exterior mirror will operate downward.
- When the LH/RH exterior mirror motor receives power through circuit CPM14 (GY/BN)/CPM18 (GN/BN) and ground through circuit CPM23 (GY), the LH/RH exterior mirror will operate upward.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Exterior mirror control switch
- Exterior mirror motor
- Exterior mirror


C1-C2:






C3:




pro multis · About Operation CHARM