Signal Description, Climate Control Module (CCM), Connector A
WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2014 Volvo XC90, 2013 Volvo XC90, 2012 Volvo XC90, 2011 Volvo XC90, and 2010 Volvo XC90. However, it is still accessible from the selected car via links, so may be relevant.
General
There may be several connections and connectors between the control module and components.
NOTE:
It is important to connect the breakout box and check the ground terminals before taking readings.
| U= | DC voltage in volts (V) | UAC = | AC voltage in volts (V) |
| Ubat = | Battery voltage (V) | f = | Frequency in Hertz (Hz) |
| Ulow = | Voltage approximately 0 V | % duty = | Duty cycle (pulse ratio) as a percentage (%) |
| t = | Time in milliseconds (ms) |
| Breakout box terminal | Control module terminal | Connecting the component | Signal type | Ignition on | Engine idling | Other |
| #25 | #A1 | splice 53/437-#1 relay central electronic module (CEM) |
Signal, extended X-supply | Ubat | Ubat | |
| #26 | #A2 | terminal #A3 power unit | Diagnostic signal, blower fan motor | - | - | |
| #27 | #A3 | #A1 power unit | Control signal, blower fan motor | 0-10 mA | 0-10 mA | |
| #28 | #A4 | - | Signal ground | Ulow | Ulow | |
| #29 | #A5 | - | Signal ground | Ulow | Ulow | |
| #30 | #A6 | - | Signal ground | Ulow | Ulow | |
| #31 | #A7 | central electronic module (CEM) | Signal, alarm LED (in). Internally directly connected to terminal #B17 | 1.9 V 1 Hz 10% duty | 1.9 V 1 Hz 10% duty | |
| #32 | #A8 | splice 53/425-fuse | 30-supply, power supply climate control module (CCM) | Ubat | Ubat | |
| #33 | #A9 | - | Signal ground | Ulow | Ulow | |
| #34 | #A10 | - | Signal ground | Ulow | Ulow | |
| #35 | #A11 | Control area network (CAN) bus terminal #19 steering wheel module (SWM) | PCCAN L1 | 0-5 V | 0-5 V | |
| #36 | #A12 | Control area network (CAN)-bus terminal #3 driver information module (DIM) | PCCAN L2 | 0-5 V | 0-5 V | |
| #37 | #A13 | Control area network (CAN) bus terminal #9 steering wheel module (SWM) | PCCAN H1 | 0-5 V | 0-5 V | |
| #38 | #A14 | Control area network (CAN)-bus terminal #2 driver information module (DIM) | PCCAN H2 | 0-5 V | 0-5 V | |
| #39 | #A15 | - | Signal ground | Ulow | Ulow | |
| #40 | #A16 | splice 53/438-ground 2 A-post R | Power ground (measured to the battery negative terminal) | Ulow | Ulow |