DTC 423, DTC 431, DTC 442, DTC 444: TRACS Inlet Valve - Fault In Valve Terminal Circuit; Control Module - General Hardware Fault; Control Module - Creeping Powers; Control Module - Valve Reference Power
WARNING: This page is about a different car, the 1996 Volvo 850. However, it is still accessible from the selected car via links, so may be relevant.
- If DTCs 423, 431, 442, or 444 are present, determine whether fault is permanent or intermittent. If fault is permanent, replace control module. If fault is intermittent, erase DTC.
- If DTCs 423 and 141 are present, perform diagnosis starting with step 6) in DTC 141 test, then go to step 5). If DTCs 423 and 142 are present, perform diagnosis in DTC 142 test, then go to step 5).
- If DTCs 423 and 143 are present, perform diagnosis starting with step 2) in DTC 143 test, then go to step 5). If DTCs 423 and 144 are present, perform diagnosis in DTC 144 test, then go to step 5). If DTCs 431 and 433 are present, perform diagnosis starting with step 2) in DTC 433 test, then go to step 5).
- If DTCs 431 and 443 are present, perform diagnosis starting with step 3) in DTC 443 test, then go to next step. If DTCs 442, 444, and 441 are present, perform diagnosis starting with step 2) in DTC 411 , 412, 413, 414, 421, 422, 432 & 445 test, then go to next step.
- Disconnect scan tool. Test drive vehicle. Note DTC status. If fault is permanent, replace ABS control module. If fault is intermittent, erase DTC.