Dynamic Laser Cruise Control System

WARNING: This page is about a different car, the 2008 Toyota Avalon. However, it is still accessible from the selected car via links, so may be relevant.

DIAGNOSTIC TROUBLE CODE CHART

DTC Code	Detection Item	Trouble Area
P0500	Vehicle Speed Sensor Malfunction	Combination meter Vehicle speed sensor Vehicle speed sensor signal circuit ECM
P0503	Vehicle Speed Sensor Circuit Malfunction	Combination meter Vehicle speed sensor Vehicle speed sensor signal circuit ECM
P0571	Brake Switch "A" Circuit	Stop light switch assembly Stop light switch assembly circuit ECM
P0571	Stop Light Switch Circuit Malfunction	BRK relay BRK relay circuit ABS & traction actuator assembly (Skid control ECU) Communication circuit Distance control ECU ECM
P0575	Cruise Control Input Circuit	ECM
P1570	Radar Sensor Malfunction	Laser sensor
P1572	Improper Aiming of Radar Sensor Beam Axis	Laser sensor
P1575	Warning Buzzer Malfunction	Skid control buzzer assembly Skid control buzzer circuit ABS & traction actuator assembly (Skid control ECU)
P1578	Brake System Malfunction	VSC system
P1615	Communication Error from Distance Control ECU to ECM	Communication circuit Distance control ECU ECM
P1616	Communication Error from ECM to Distance Control ECU	Communication circuit Distance control ECU ECM
U0100	Lost Communication with ECM / PCM "A"	Communication circuit Distance control ECU ECM
P1617	Distance Control ECU Malfunction	Distance control ECU
P1630	Communication Error from VSC to ECM	Communication circuit ABS & traction actuator assembly (Skid control ECU) ECM
P1631	Communication Error from ECM to VSC	Communication circuit ABS & traction actuator assembly (Skid control ECU) ECM
U0100	Lost Communication with ECM / PCM "A"	Communication circuit ABS & traction actuator assembly (Skid control ECU) ECM
U0122	Lost Communication with Vehicle Dynamics Control Module	Communication circuit ABS & traction actuator assembly (Skid control ECU) ECM
U0123	Communication Error of Yaw Rate Sensor	Communication circuit Yaw rate sensor Distance control ECU ECM
U0126	Lost Communication with Steering Angle Sensor Module	Communication circuit Steering sensor Distance control ECU ECM
U0235	Lost Communication with Cruise Control Front Distance Range Sensor	Communication circuit Laser sensor Distance control ECU
U1101	Lost Communication with Distance Control ECU	Communication circuit Distance control ECU ECM
U1102	Lost Communication with Radar Sensor	Communication circuit Laser sensor Distance control ECU

HINT:

When DTC P1578 is output, check for DTCs on the skid control ECU in the diagnosis mode. Only when any code is output, inspect the trouble area based on the DTC.