On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. REMOVE FUEL PUMP RELAY (F/PMP) (a) Remove the fuel pump relay from the engine room relay block. 2. INSPECT FUEL PUMP RELAY 
(a) Measure the resistance according to the value(s) in the table below. Standard Resistance:
If the result is not as specified, replace the fuel pump relay. 3. INSTALL FUEL PUMP RELAY (a) Install the fuel pump relay to the engine room relay block. |
Toyota Tundra Service Manual > Trailer Brake Control System: Power Supply Voltage Circuit (C1241)
DESCRIPTION If a malfunction is detected in the power supply circuit, the trailer brake control ECU (brake control with bracket relay) stores this DTC. DTC No. Detection Item INF Code DTC Detection Condition Trouble Area C1241 Power Supply Voltage Circuit 81 82 INF Code: 81 (Low power supply voltage ...
