Relay Arrangements on the Electronics Box

Relay

Relay Arrangements on the Electronics Box


In the engine compartment





R1 - Coolant circulation pump relay -J151- (643)
• Fuse location R1
• Only engine codes CCZA, CCTA, CBFA

R1 - Auxiliary engine coolant pump relay -J496- (643)
• Fuse location R1
• Engine code CAVD, CBZB
• Engine code CNWA, from December 2011
• Engine code CTHD, from July 2012

R2 - Fuel pump relay -J17- (643)
• Fuse location R2
• Engine codes CCCA, CBTA and CBUA

R2 - Engine component current supply relay -J757- (643)
• Fuse location R2
• Only engine codes CCZA, CCTA, CBFA

R3 - Motronic engine control module power supply relay -J271- (644)
• Fuse location R3
• Engine codes CCZA, CCTA, CBFA, CCCA, CAVD, CBZB, CBTA, CBUA
• Engine code CNWA, from December 2011
• Engine code CTHD, from July 2012

R3 - Terminal 30 power supply relay -J317- (644)
• Fuse location R3
• Engine code CAYC, CJAA
• Engine code CFFB, from December 2012

R4 - Secondary air pump relay -J299- (645)
• Fuse location R4
• Engine codes CCZA, CBTA, CBUA, CCTA and CBFA, through June 2012
• Engine codes CBUA and CBFA, from July 2012

R4 - Low heat output relay -J359- (645)
• Fuse location R4
• Engine code CAYC, CJAA
• Engine code CBZB, from July 2012

R5 - High heat output relay -J360- (644)
• Fuse location R5
• Engine code CAYC, CJAA
• Engine code CBZB, from July 2012

Q - Automatic glow time control module -J179- (644)
• Fuse location Q
• Engine code CAYC, CJAA
• Engine code CFFB, from December 2012


Note:
• The number in brackets behind the part designation denotes
the control number on the housing.