DTC C2121/21, C2122/22, C2123/23, C2124/24, C2131/31, C2132/32, C2133/33, C2134/34, C2181/81, C2182/82, C2183/83, C2184/84: No Signal from Transmitter ID1 in Main Mode; No Signal from Transmitter ID2 in Main Mode; No Signal from Transmitter ID3 in Main Mode; No Signal from Transmitter ID4 in Main Mode; No Signal from Transmitter ID1 in 2nd Mode; No Signal from Transmitter ID2 in 2nd Mode; No Signal from Transmitter ID3 in 2nd Mode; No Signal from Transmitter ID4 in 2nd Mode; Transmitter ID1 not Received (Test Mode DTC); Transmitter ID2 not Received (Test Mode DTC); Transmitter ID3 not Received (Test Mode DTC); Transmitter ID4 not Received (Test Mode DTC): Wiring Diagram
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